CHORE: bugfixes

types { char, int, float, string } and can come back later to make it
one type to call.

GITIGNORE: Added tests and Makefile to cleanup fuzzyfinder but dont need
them pushed either as I have enough testing done.

.clang-tidy

@@ -0,0 +1,8 @@
+Checks: >
+  -*,
+  clang-analyzer-*,
+  bugprone-*,
+  -bugprone-easily-swappable-parameters,
+  -bugprone-reserved-identifier,
+  performance-*,
+  security-*

.gitignore

@@ -1,2 +1,8 @@
 build/
-.cache/
+.cache/
+tests/cache/
+tests/bin/
+coverage.html
+
+tests
+Makefile

AGENTS.md

@@ -1,37 +0,0 @@
-# AGENTS.md
-
-## Identity & Core Philosophy
-You are an expert bug-hunter agent.
-Speak and reason in **Caveman style** (why use many token when few token do trick).
-
-### Caveman Communication Rules
-- Drop articles (a/an/the), filler (just/really/basically/actually/simply), pleasantries, and greetings.
-- Short, dense, direct phrases. Fragment sentences okay.
-- Never summarize files read. Report only findings.
-- **No tool-call narration:** Fire tools directly. Never explain what you are about to inspect or have just inspected.
-- **Tokenizer rules:** NEVER invent abbreviations (cfg/impl/req/res/fn) or use arrows (→); tokenizers split them. Keep full words.
-- **Safety rules:** NEVER drop `not`, `never`, `no`, `only`, `except` (flips meaning).
-- **Exceptions (Do NOT caveman):** Code snippets, file paths, line numbers, command names, and error traces remain exact and intact.
-- **Output pattern:** `[thing] [action] [reason]. [next step].`
-
----
-
-## Strict Permissions & Boundaries
-1. **Target Task:** Read codebase, hunt bugs, identify security flaws, edge-case failures, or performance bottlenecks.
-2. **File Mutation Constraint:**
-   - **YOU MAY ONLY CREATE OR EDIT:** `BUGS.md`
-   - **ABSOLUTE BAN:** You are strictly forbidden from modifying, patching, refactoring, deleting, or creating ANY other files in the workspace (no source files, configs, tests, or documentation).
-   - If user asks you to fix code directly, REFUSE in caveman: "No touch code. Rule say only log to BUGS.md."
-
----
-
-## Operating Instructions
-1. Inspect files in read-only mode using available search/read tools. Call them immediately without introductory text.
-2. Read existing `BUGS.md` first:
-   - Identify existing style, headers, keys, table columns, or list formats.
-   - You MUST mirror existing format, structure, and naming conventions exactly.
-   - If `BUGS.md` is empty or missing, use a minimal markdown list: `File:Line | Severity | Issue | Recommended fix`.
-3. For every confirmed issue found:
-   - Append or edit entry in `BUGS.md` following matched format.
-   - Keep bug descriptions in `BUGS.md` terse and caveman-style.
-4. Do not patch or edit source code under any circumstances.

BUGS.md

@@ -1,325 +0,0 @@
-# libvec bug tracker
-
-> **Verified** `char.c` @ **2026-09-28 12:48:04**, 3 independent passes.
-> `char.h` 108 lines, `utils.h` 31, `utils.c` 12, `CMakeLists.txt` 32, `main.c` 55.
-> Line numbers are the *only* field that drifts. Re-verify before trusting them.
->
-> **Pass 4** @ **2026-09-28**, `push_back` / `pop_back` (char.c:67-157), ASan.
-> **Pass 5** @ **2026-09-28**, whole file re-read plus 10 harness runs, ASan.
-> Line count moved 804 to 800 with the `create` rewrite; re-measured per pass.
-
-**Open 79** — 11 S1, 27 S2, 11 S3, 29 C
-**1 DECIDE** · **Fixed 12** (listed at the bottom, no rows) · 79 rows
-
-**Severity** `S1` memory safety · `S2` wrong result / broken contract ·
-`S3` edge case · `C` cleanup · `DECIDE` open design question
-
-## How to read this
-
-Each function is a `###` with one table. Rows are sorted by severity (S1 first),
-so the worst thing in each function is on top. Fixed findings are **not** rows —
-they are a flat ID list at the bottom of the file.
-
-Tracking state is a **column**, not a checkbox: a `State` cell carries more than
-"done or not done" — `DECIDE` has no checkbox equivalent, and it is load-bearing
-here. And task-list syntax inside a table cell is renderer-dependent, so a
-`State` column is the form that survives any markdown preview. If your preview
-*does* render checkboxes in tables and you want click-to-toggle, a leading `Done`
-column can be added without disturbing anything else.
-
-## Rules
-
-1. **IDs are permanent.** Never reused, never renumbered. An ID leaves the file
-   only when its row is deleted outright, and only under rule 3.
-2. **Locations drift freely.** The only field updated in place.
-3. **False findings are deleted, not archived.** If a row turns out to be my own
-   error, the row is removed. A new ID carries the accurate finding if there is
-   one. No `DISPUTED` state, no corrections log — a tracker is not a diary.
-4. **State** is `OPEN` / `DECIDE`. `FIXED` means the row is gone and its ID is
-   in the bottom list.
-5. **Fixed findings live in the ID list at the bottom**, nothing else.
-
-## Triage — the 11 open S1s, in suggested order
-
-| #  | ID | Location | Summary |
-|----|---|---|---|
-| 1  | <code><nobr>RS-7</nobr></code> | char.c:175, 200 | `reserve` on a blank vector allocates 1024 but claims 5000. Ordinary `size`, live overflow |
-| 3  | <code><nobr>PB-8</nobr></code> | char.c:89, 131 | live heap overflow, 2-line repro |
-| 4  | <code><nobr>PB-14</nobr></code> | char.c:131, 154 | write through the freed buffer after `delete`, 2-line repro |
-| 5  | <code><nobr>RS-1</nobr></code> | char.c:180-195 | use-after-free in `reserve`'s truncation loop, ASan confirmed |
-| 6  | <code><nobr>IN-1</nobr></code> | char.c:783 | inverted `iter_end > iter_start` |
-| 7  | <code><nobr>IN-2</nobr></code> | char.c:783 | dead bounds check sitting behind IN-1 |
-| 8  | <code><nobr>DL-1</nobr></code> | char.c:293, 297 | `const` delete, double free on second call |
-| 9  | <code><nobr>DL-2</nobr></code> | char.h:11-17 | no ownership marker, struct copy double-frees |
-| 8 | <code><nobr>UT-2</nobr></code> | utils.c:3-12 | `error_messages[0]` / `[1]` are `NULL` |
-| 9 | <code><nobr>PB-3</nobr></code> | char.c:106, 116 | capacity committed before the realloc check |
-| 10 | <code><nobr>PB-15</nobr></code> | char.c:87, 128-131 | null-buffer path has no `else`, so `arr == NULL && size > 0` writes to NULL. Defensive |
-
-> **Two of the eleven are the same class.** RS-7 and PB-8 both end in a
-> write past a small block, and both come from a struct field claiming more
-> bytes than were allocated: `capacity` set from the request rather than the
-> block (RS-7, char.c:200), `calloc(1)` with `capacity` untouched (PB-8,
-> char.c:89). One rule kills both: **never write `_internal_capacity` without
-> writing the allocation it describes.** Verify with a single postcondition —
-> after any function that touches capacity, the block size and the field must
-> agree. CR-8 was a third member of this class; it is fixed as of Pass 5, and
-> `create` now carries the same postcondition in one place (CR-9, char.c:44).
-
-> **Fix IN-1 and IN-2 in the same commit.** The raw read in the 3-arg overload
-> is unreachable *only because* IN-1's inversion empties the loop. Fixing IN-1
-> alone converts a clean rejection into a live out-of-bounds read, because IN-2's
-> bound check stays dead behind the short-circuit.
-
-> **PB-8 and PB-14 are the only two rows in this file with a sanitizer trace
-> attached.** Both reproduce in three lines from `main`. `delete` should null
-> the struct's fields (DL-1) and push should size the materialization from
-> `_internal_capacity` (PB-8); those two fixes close the whole S1 set for this
-> function pair.
-
-> **Reproducer harness**: `clang -std=c2x -g -fsanitize=address -Isrc/lib
-> -Isrc/lib/char t.c src/lib/char/char.c src/lib/utils/utils.c`. `-std=c2x` is
-> required — `char.c` uses `nullptr`, so the project does not compile as C17.
-> Reproducers that ask for a multi-exabyte `calloc` additionally need
-> `ASAN_OPTIONS=allocator_may_return_null=1`, or ASan aborts on the 2^61-byte
-> `calloc` before the interesting line runs.
-
-> **Defensive-only rows.** RZ-2, RS-2, PB-15 and PB-18 are not reachable
-> without an allocation of ~2^61 bytes, or a hand-built struct. Kept as
-> hardening because the guards are cheap and the invariant is worth stating.
-
----
-
-## Bugs
-
-### `_vec_char_push_back` / `_vec_char_pop_back` — char.c:71, 136
-
-| ID  | Sev | Location | Finding | State |
-|-----|---|---|---|---|
-| `PB-8`  | S1 | char.c:89, 131 | `calloc(1)` on the null-buffer path leaves `_internal_capacity` at 1024, so the 2nd `push_back` writes `arr[1]` one byte past a 1-byte block. **ASan: `heap-buffer-overflow` WRITE of size 1 at char.c:131**, block allocated at char.c:89 | OPEN |
-| <code><nobr>PB-14</nobr></code> | S1 | char.c:75, 131, 154 | neither function checks liveness. `_vec_char_delete` frees without clearing the struct (DL-1), so `delete(&v); push_back(&v,'z')` writes through the freed pointer. **ASan: `heap-use-after-free` WRITE of size 1 at char.c:131**, freed at char.c:297. Same for `pop_back`, which writes `'\0'` at char.c:154 | OPEN |
-| <code><nobr>PB-15</nobr></code> | S1 | char.c:87, 128-131 | the materialize branch is guarded by `status == ERR_BUF_NULL && _internal_size == 0` and has no `else`. Any state with `arr == NULL && _internal_size > 0` falls through to char.c:126, takes `res = ptr->_internal_arr` (NULL) and writes `arr[size]`. No in-file producer, but nothing checks the invariant either | OPEN |
-| <code><nobr>PB-3</nobr></code> | S1 | char.c:106, 116 | `_internal_capacity` assigned before the `!res` check; on OOM the struct overstates its capacity and the next call writes past the real block. Both branches | OPEN |
-| <code><nobr>PB-9</nobr></code> | S2 | char.c:85-99| `push_back` materializes a null vector, making it a second path alongside `reserve`; the two disagree on allocation size (1 byte vs 1024) | OPEN |
-| <code><nobr>PB-16</nobr></code> | S2 | char.c:116, 131 vs 154 | the growth `realloc` leaves the new tail uninitialized and `push_back` never writes a terminator at `_internal_size`, so `_vec_char_data` hands back a non-NUL-terminated buffer — `strlen(data(&v))` runs off the end. **ASan: `heap-buffer-overflow` READ of 2049 bytes past a 2048-byte region** grown at char.c:116. The lone `'\0'` write in either function is `pop_back`'s vacated slot, so termination is accidental | OPEN |
-| <code><nobr>PB-21</nobr></code> | S2 | char.c:81, 104 | after any `reserve` the vector is permanently full: reserve sets `max_size = capacity`, so char.c:81 fails for good and `push_back` can only return `ERR_MAX_PASSED`. Duplicate view of AS-4, kept so this table stands alone | OPEN |
-| <code><nobr>PB-17</nobr></code> | S3 | char.c:144-147 vs 87 | `pop_back` refuses to materialize while `push_back` does. A blank vector reports `ERR_BUF_NULL` (21) and logs a spurious "Buffer :- NULL" instead of `ERR_SIZE_ZERO` (22), so a `while (pop_back(&v) == SUCCESS)` drain reports the wrong reason | OPEN |
-| <code><nobr>PB-18</nobr></code> | S3 | char.c:103, 116, 120-124 | `_internal_capacity == 0` makes `dst_cap` 0, and `realloc(arr, 0)` frees the block. The `!res` check then returns `ERR_ALLOC_FAIL` with `_internal_arr` dangling and capacity already committed as 0; the next push writes to freed memory. Capacity 0 is unreachable from this file today, so defensive | OPEN |
-| <code><nobr>PB-20</nobr></code> | S3 | char.c:154 | only the vacated slot is zeroed, so bytes past `_internal_size` keep their values and are readable out of band through `data()`. `clear` zeroes the whole range and `erase` zeroes the tail; `pop_back` is the inconsistent one | OPEN |
-
-> PB-1 and PB-2 were originally described as firing "on the very next call" and
-> as "the clamp silently does nothing". Both claims were wrong in detail: PB-1
-> needed `capacity < size+1 <= max_size < 2*capacity`, a band today's `VEC_MAX`
-> never reaches, and PB-2's cause was `cap` being recomputed from the
-> already-clobbered `capacity`, not the branch being skipped.
-
-> **Pass-4 note.** Four pre-existing rows here were my own errors and were
-> deleted: a "dead else" that is the common path, two `is_valid` double-call
-> claims in a function that hoists, and an overflow that `VEC_MAX` makes
-> impossible. Found by diffing the wording against the source, not by testing.
-> The three new S1/S2 rows *were* tested; the reproducer command is above.
-
-### `_vec_char_create` — char.c:23
-
-> **Pass-5 note.** `create`'s growth block was rewritten this pass and the
-> rewrite is correct. The invariant it now enforces in one place is
-> `size <= _internal_capacity <= _internal_max_size` on return, held by the
-> commit-back at char.c:44. Verified under ASan at `size` 0, 1, 1023, 1024,
-> 1025, 2047, 2048, 2049, 2999, 5000 and `VEC_MAX - 1`: `capacity >= size` on
-> every call, the `calloc` block matches the reported capacity, no overflow.
-> One case to know about: `create(NULL, VEC_MAX - 1)` still returns
-> `capacity=4611686018427387902` over `arr == NULL`, because growth is correct
-> and the `calloc` then fails. That is CR-3 below, and it is unchanged.
-> `dst_cap * 2` at char.c:42 cannot wrap, because the loop only doubles while
-> the product stays under `_internal_max_size`. An intermediate revision of
-> this fix omitted the commit-back and overflowed every `size > CAPACITY`; it
-> never reached a build, so no ID was spent on it. Two `create` findings left
-> the table this pass and their IDs are in the bottom list: **CR-7**, the
-> second growth branch, which tested the ceiling (`capacity*2 > max_size`)
-> instead of the loop's own postcondition — a superset that also fired after a
-> successful grow, overwriting `capacity` with `size` and forcing the next
-> `push_back` to reallocate for one byte; its `>` test also disagreed with the
-> loop's `>=` exit on exactly one value, reachable only because `VEC_MAX` is
-> odd. **CR-8**, the `>=` guard at char.c:32, which left `size == VEC_MAX`
-> allocating 1024 bytes and copying `VEC_MAX` bytes into it. Both are gone
-> because the branch they described no longer exists, not because either was
-> re-filed under a new ID.
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>CR-6</nobr></code> | S2 | char.c:29, 39-45| null vector's `_internal_capacity` is set to `CAPACITY` (1024) while nothing is allocated. Currently **masked** by AC-1: `capacity()` returns `ERR_BUF_NULL` first, so the lie is not observable through the public API. The observable form of this same lie is PB-8, after `push_back` materializes the buffer | OPEN |
-| <code><nobr>CR-3</nobr></code> | S3 | char.c:48-53 | on `calloc` failure returns a struct with an already-grown `capacity` and `arr == NULL`. Defensive. **Now reachable with an ordinary `size`, not just a huge one**: `create(NULL, 5000)` grows `capacity` to 8192 at char.c:44, then the 8192-byte `calloc` fails and the struct survives claiming 8192 over a null buffer | OPEN |
-| <code><nobr>CR-4</nobr></code> | DECIDE | char.c:58-65 | no NUL terminator; is a `const char* src, size_t size` pair a byte range or a C string? Affects whether a `from_cstr` helper is needed | DECIDE |
-
-### `_vec_char_is_valid` — char.c:6
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>IV-1</nobr></code> | S2 | char.c:6 | always returns non-zero, so `if (_vec_char_is_valid(&v))` is true for every input including NULL. Every call site compares codes by luck | OPEN |
-| <code><nobr>IV-3</nobr></code> | S2 | char.c:6-17| `is_valid` is the only validation primitive in the file and it requires a non-null **buffer**, not just a non-null vector. Every accessor that only needs to validate the vector pointer therefore inherits `ERR_BUF_NULL`. This is the root cause of AC-1, AC-2, SW-1 and ST-2 | OPEN |
-
-### `_vec_char_reserve` — char.c:156
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>RS-7</nobr></code> | S1 | char.c:175, 200 | the `ERR_BUF_NULL` path allocates `ptr->_internal_capacity` bytes, not the requested `capacity`, then line 200 sets `_internal_capacity = capacity` regardless. So `reserve(&v, 5000)` on a blank vector `calloc`s **1024** bytes and the struct claims 5000. **ASan: `heap-buffer-overflow` WRITE at char.c:131, 0 bytes after a 1024-byte region allocated at char.c:175**, reached by 1026 `push_back`s. The `SUCCESS` path at char.c:184 sizes the `realloc` correctly; only the null-buffer path is wrong. Second producer of PB-8, and unlike CR-7 this one needs no huge `size` — 5000 is ordinary | OPEN |
-| <code><nobr>RS-1</nobr></code> | S1 | char.c:180, 186-193, 195| realloc result held in `res`, but the truncation loop writes `ptr->_internal_arr`, which is still the pre-realloc pointer. Use-after-free when a shrinking `reserve` moves the block. Introduced by the FX-3 fix. **ASan confirmed**: `create("abcdefgh",8)` then `reserve(3)` gives `heap-use-after-free WRITE` at char.c:194 into a block freed at char.c:184 | OPEN |
-| <code><nobr>RS-2</nobr></code> | S3 | char.c:160-164 | `capacity == 0` checked before the NULL-vector check, so a NULL vector with `capacity == 0` reports `ERR_SIZE_ZERO` instead of `ERR_VECTOR_NULL`. Defensive | OPEN |
-| <code><nobr>RS-6</nobr></code> | C | char.c:158, 178, 195| clang `-Wsometimes-uninitialized`: `res` used uninitialized at 195 if the `if`/`else if` chain falls through. Not reachable today since `is_valid` returns exactly 3 values, but real fragility | OPEN |
-| <code><nobr>RS-3</nobr></code> | C | char.c:197 | `max_size = capacity` is correct under the hard-cap semantics but is documented nowhere. **This is also the cause of ST-1 and AS-4** | OPEN |
-| <code><nobr>RS-4</nobr></code> | C | char.c:188-191 | element-at-a-time loop, should be `memset` | OPEN |
-
-### `_vec_char_shrink_to_fit` — char.c:202
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>ST-1</nobr></code> | S2 | char.c:202, 217 -> 197| calls `reserve(ptr, _internal_size)`, and `reserve` sets `max_size = capacity`. So `max_size` is permanently capped to the current size and **the vector can never grow again** — every later `push_back` trips `size+1 > max_size` and returns `ERR_MAX_PASSED`. Silent brick. No save/restore, unlike `resize` (RZ-3) | OPEN |
-| <code><nobr>ST-2</nobr></code> | S3 | char.c:204-211| returns `ERR_SIZE_ZERO` on an empty vector; shrinking an empty vector should be a successful no-op. Two unhoisted `is_valid` calls at 204 and 208 | OPEN |
-
-### `_vec_char_swap` — char.c:221
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>SW-1</nobr></code> | S2 | char.c:229-233 | refuses NULL-buffer operands, so a blank vector can never be swapped against a populated one. Blocks the `create(nullptr, 0)` workflow outright | OPEN |
-| <code><nobr>SW-2</nobr></code> | C | char.c:223 | temp built via `_vec_char_create(nullptr, 0)`; a plain initializer states the intent | OPEN |
-
-### `_vec_char_delete` — char.c:289
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>DL-1</nobr></code> | S1 | char.c:289, 293 | takes `const *` so it cannot reset the vector; a second call is a double free. Only function still taking `const` in a mutable API | OPEN |
-| <code><nobr>DL-2</nobr></code> | S1 | char.h:11-17 | no ownership marker on the struct, so a by-value copy yields two owners of one buffer and `delete` cannot detect it | OPEN |
-| <code><nobr>DL-3</nobr></code> | C | char.c:293 | unnecessary `(void*)` cast; `const` on the struct does not propagate to the pointee | OPEN |
-
-### `_vec_char_capacity` / `_vec_char_max_size` / `_vec_char_data` — char.c:261, 275, 252
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>AC-1</nobr></code> | S2 | char.c:254, 267, 281 | all three return `ERR_BUF_NULL` for a null vector, though none of them needs a buffer. `capacity()` should report capacity, not an error | OPEN |
-| <code><nobr>DA-1</nobr></code> | S2 | char.c:251, 257| `char*` returned from a `const _VecCharInternal*`, laundering the const-correctness the mutable refactor was meant to establish | OPEN |
-
-### `_vec_char_clear` / `_vec_char_print_vec` — char.c:298, 341
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>CL-1</nobr></code> | C | char.c:310-313 | element-at-a-time zeroing loop, should be `memset` | OPEN |
-
-### `_vec_char_at` — char.c:320
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>AT-1</nobr></code> | S2 | char.c:323, 328, 335| returns error codes (23/25, and 21) as a `char`; `assign` at char.c:642 pushes such a value into the vector as data | OPEN |
-| <code><nobr>AT-2</nobr></code> | C | char.c:332 | raw `fprintf` bypasses `LOGERROR` | OPEN |
-
-### `_vec_char_begin` / `_vec_char_end` — char.c:352, 359
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>BE-1</nobr></code> | S2 | char.c:355, 365, 367, 630, 668 | `FAILURE` (`== 1`) returned as an index, indistinguishable from index 1. Single root cause of the `+ 1` at char.c:630 and char.c:668, of the assign-on-empty failures AS-1, and of the erase-on-empty failure ER-1 | OPEN |
-| <code><nobr>BE-2</nobr></code> | C | char.c:364 | `(int)` cast on a `size_t` return | OPEN |
-
-### `_vec_char_front` / `_vec_char_back` / `_vec_char_empty` — char.c:371, 379, 387
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>AC-2</nobr></code> | S2 | char.c:392, 393 | inverted: `SUCCESS` (0) when empty, `FAILURE` (1) when not, so `if (empty(v))` is false for an empty vector | OPEN |
-| <code><nobr>FB-1</nobr></code> | S2 | char.c:373, 374, 381, 382 | returns `FAILURE` (1) as a `char`; `1` is valid data | OPEN |
-| <code><nobr>FB-2</nobr></code> | C | char.c:373, 381 | validates only `ERR_VECTOR_NULL`, unlike every other accessor | OPEN |
-
-### `_vec_char_erase` (both overloads) — char.c:398, 412
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>ER-1</nobr></code> | S2 | char.c:417, 418 | `iter_start >= iter_end` returns `ERR_OUT_OF_BOUNDS`, so `erase(begin(), end())` on an empty vector always errors. This is what breaks both `assign` overloads. On an empty vector the actual trip is char.c:417 (`iter_end > size`) because `end()` returned 1 and the caller added 1 — see BE-1 | OPEN |
-| <code><nobr>ER-2</nobr></code> | C | char.c:396, 410, 422-426 | zeroing loop should be `memset`; two stale `// TODO: Fix return value` comments | OPEN |
-
-### `_vec_char_resize` (both overloads) — char.c:432, 518
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>RZ-8</nobr></code> | S2 | char.c:434-444, 520-530 | both overloads reject a null-buffer vector with `ERR_BUF_NULL` before the `_internal_size == 0` branch that would have materialized one, so `resize` cannot be the first call on a blank vector. `push_back` can. **ASan: `create(NULL,0)` then `resize(0,4)` returns 21** and the vector is still empty, where `push_back` four times would have worked. Same shape as PB-17, opposite direction | OPEN |
-| <code><nobr>RZ-3</nobr></code> | S2 | char.c:456, 471, 478, 497, 540, 557, 569, 579| the `max_size` save/restore is load-bearing (it undoes `reserve`'s cap) but looks removable. Nothing documents that | OPEN |
-| <code><nobr>RZ-1</nobr></code> | S2 | char.c:442-446, 528-532| `size == _internal_size` returns `ERR_OUT_OF_BOUNDS` for a legitimate no-op; the code is also semantically wrong | OPEN |
-| <code><nobr>RZ-4</nobr></code> | S3 | char.c:501-504 vs 583-586| 3-arg fills the discarded tail with `val`, 2-arg with `'\0'`. `data()` exposes the difference | OPEN |
-| <code><nobr>RZ-2</nobr></code> | S3 | char.c:481, 567 | unguarded `tmpcp *= 2` wraps on overflow. Defensive | OPEN |
-| <code><nobr>RZ-5</nobr></code> | C | char.c:462, 492, 548 | dead post-`reserve` capacity checks; `reserve` always assigns `capacity` to its argument exactly | OPEN |
-| <code><nobr>RZ-6</nobr></code> | C | char.c:432-515 vs 518-597 | two ~84-line near-identical bodies, with the growth blocks copy-pasted between them | OPEN |
-| <code><nobr>RZ-7</nobr></code> | C | char.c:444, 467, 501, 508, 530, 553, 583, 590| fill loops should be `memset`; misleading `LOG("ERR :- ...")` on what is now a no-op | OPEN |
-
-### `_vec_char_assign` (both overloads) — char.c:600, 652
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>AS-1</nobr></code> | S2 | char.c:630, 668 | fails on an empty destination, via ER-1. Fatal now because status is propagated; the immutable version discarded it and continued | OPEN |
-| <code><nobr>AS-2</nobr></code> | S2 | char.c:624-647, 661-687| not atomic: `erase` → `reserve` → `push_back` loop. Reserve failure leaves the destination wiped; a `push_back` failure mid-loop leaves it partially filled | OPEN |
-| <code><nobr>AS-3</nobr></code> | S2 | char.c:624, 662, 679| no `> _internal_max_size` guard on the assign count | OPEN |
-| <code><nobr>AS-4</nobr></code> | S2 | char.c:635, 673 | the internal `reserve` caps `max_size` at the assign count with no save/restore, which `resize` does have | OPEN |
-| <code><nobr>AS-6</nobr></code> | C | char.c:600-649 vs 652-688 | near-duplicate overloads differing only in the value source | OPEN |
-| <code><nobr>AS-7</nobr></code> | S3 | char.c:642 | no check that `at()` succeeded before pushing its result. Currently correct **only** because the guards at char.c:611-618 and char.c:624 happen to make every index in range and the buffer non-null. Removing or loosening either guard turns this into AT-1's data-corruption case | OPEN |
-
-### `_vec_char_insert` (all three overloads) — char.c:691, 726, 759
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>IN-1</nobr></code> | S1 | char.c:779 | inverted check: `iter_end > iter_start` should be `iter_end <= iter_start`, so every valid non-empty range is rejected and only an empty range is accepted | OPEN |
-| <code><nobr>IN-2</nobr></code> | S1 | char.c:779 | that clause short-circuits first, so the `iter_end > iterator->_internal_size` bound never fires | OPEN |
-| <code><nobr>IN-4</nobr></code> | S2 | char.c:742, 747-754 | no `max_size` pre-check, so an oversized `amount` partially inserts and then fails, leaving the vector half-modified | OPEN |
-| <code><nobr>IN-6</nobr></code> | S3 | char.c:747 | `iter + amount` can overflow `size_t` | OPEN |
-| <code><nobr>IN-5</nobr></code> | S3 | char.c:742 | `amount <= 0` on a `size_t` is always just `== 0` | OPEN |
-| <code><nobr>IN-8</nobr></code> | S2 | char.c:747-754, 793 | the loop copies via the raw `iterator->_internal_arr[i]` rather than a bounds-checked accessor. It is **unreachable today** only because IN-1's inversion makes `iter_end <= iter_start` always true, so the loop never runs. It becomes a live out-of-bounds read the moment IN-1 is fixed, unless IN-2 is fixed in the same change | OPEN |
-| <code><nobr>IN-9</nobr></code> | C | char.c:747-754 | O(amount²) loop of single inserts where one grow + `memmove` would do | OPEN |
-
-### `utils.h` / `utils.c`
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>UT-2</nobr></code> | S1 | utils.c:3-12 | indices 0 and 1 are never assigned, so `error_messages[0]` and `[1]` are `NULL`. `LOGERROR(SUCCESS)` prints `%s` of `NULL`, and both are values functions return. Latent only because no caller exists yet | OPEN |
-| <code><nobr>UT-1</nobr></code> | S2 | utils.h:29 | `SIZE_MAX / sizeof(int)` is what the `char` vector uses, capping it at 1/4 of the usable address space | OPEN |
-| <code><nobr>UT-3</nobr></code> | S2 | utils.c:3 | `SUCCESS`/`FAILURE` overlap the error-index namespace, so `0` is both "success" and a table slot | OPEN |
-| <code><nobr>UT-5</nobr></code> | C | utils.h:23 | `DEBUG` prints the literal `DEBUB: `, so char.c:109 — the only `DEBUG` call in the tree, on the clamp path in `push_back` — emits a misspelled prefix | OPEN |
-| <code><nobr>UT-4</nobr></code> | C | utils.h:7, 17, 20, 22-25, 27, 29 · utils.c:6, 10 | `static const` in a header gives every TU its own copy; `ERR_NULL` is now dead (defined and given a message, never referenced from `char.c`); `ERR_SIZE_ZERO` message mentions `< 0` on a `size_t`; `extern const char*` should be `const char* const[]`; `LOG`/`LOGERROR` are hardwired to stdout and single-arg; `find_len` is UB for pointers; `CAPACITY` is a magic number in a shared header | OPEN |
-
-### `char.h`
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>CH-9</nobr></code> | S2 | char.h:11-106 (29 identifiers)| every public identifier is reserved by the C standard: `_VecCharInternal` and all 28 `_vec_char_*` functions begin with `_` at file scope, which C11 7.1.3 reserves for the implementation. Undefined behaviour on collision with any libc or third-party name. `clang -Weverything` reports all 28 | OPEN |
-| <code><nobr>CH-4</nobr></code> | C | char.h:6-8 | `<stdio.h>`/`<stdlib.h>`/`<string.h>` in the header, only needed by the `.c` | OPEN |
-| <code><nobr>CH-5</nobr></code> | C | char.h | no doc comments on any function, despite the `/**< */` style in utils.h | OPEN |
-| <code><nobr>CH-7</nobr></code> | C | char.h:22-23 | no `from_cstr` / NUL-termination path for the `char` specialization. See CR-4 | OPEN |
-| <code><nobr>CH-8</nobr></code> | C | char.h:11-17 | the public struct is named with a `_` prefix and its four fields are named `_internal_*` instead of being `PRIVATE`, so the "internal" contract is expressed only by spelling. Combined with CH-9 this is the whole naming problem | OPEN |
-| <code><nobr>CH-1</nobr></code> | C | char.h:32 vs char.c:156 | param named `max_size` in the header, `capacity` in the definition | OPEN |
-| <code><nobr>CH-2</nobr></code> | C | char.h:23-106 | `const` on by-value params throughout (`const size_t size`, `const char val`, `const size_t idx`, …) | OPEN |
-| <code><nobr>CH-3</nobr></code> | C | char.h | no `size()` accessor, so callers reach into `_internal_size` directly | OPEN |
-
-### Project
-
-| ID | Sev | Location | Finding | State |
-|---|---|---|---|---|
-| <code><nobr>PR-2</nobr></code> | C | char.c:1-3 | mixed brace style (single-line `if` in `erase`/`front`/`back`/`begin`/`empty` vs expanded blocks); `.clang-format` exists and is not run | OPEN |
-| <code><nobr>PR-3</nobr></code> | C | char.c:204, 208, 224, 225, 229, 230, 254, 255, 263, 267, 277, 281, 291, 300, 304, 322, 326, 343, 344, 354, 361, 373, 381, 389, 390, 400, 401, 415, 416, 434, 438, 520, 524, 603, 607, 611, 615, 654, 658, 693, 697, 763, 767, 771, 775| `is_valid` called 2-3× per function and logging each time, in every function except `push_back`, `pop_back` and `reserve` — those three hoist | OPEN |
-| <code><nobr>PR-7</nobr></code> | C | CMakeLists.txt:28, main.c:20-54 | the `test_runner` target exists but `main()` is entirely commented out, so nothing in the tree calls a single function in this tracker. This is the only place a regression in the 10 open S1s could be caught, and it is dead | OPEN |
-| <code><nobr>PR-4</nobr></code> | C | main.c:23-53 | 100% commented out, references removed API `Vec8_t` and `v1.size` | OPEN |
-| <code><nobr>PR-5</nobr></code> | C | include/libvec.h:4, CMakeLists.txt:12-14 | empty placeholder; `int`/`float`/`string` are empty dirs already listed as comments in CMakeLists.txt | OPEN |
-
-## ID map
-
-`FX-1` … `FX-5` are first-pass IDs. FX-1 was a duplicate of PB-6 and was never
-given a row.
-
-| Prefix | Scope | | Prefix | Scope |
-|---|---|---|---|---|
-| `PB-` | push_back, pop_back | | `AT-` | at |
-| `RS-` | reserve | | `FB-` | front, back |
-| `ST-` | shrink_to_fit | | `BE-` | begin, end |
-| `CR-` | create | | `SW-` | swap |
-| `AC-` | accessors | | `CL-` | clear, print_vec |
-| `DA-` | data | | `IV-` | is_valid |
-| `DL-` | delete | | `UT-` | utils.h, utils.c |
-| `ER-` | erase | | `CH-` | char.h |
-| `RZ-` | resize | | `PR-` | project |
-| `AS-` | assign | | `FX-` | retired first-pass IDs |
-| `IN-` | insert | | | |
-
----
-
-`PB-1` `PB-2` `PB-4` `PB-6` `PB-7` `FX-2` `FX-3` `FX-4` `FX-5` `PR-1` `CR-7` `CR-8`

CMakeLists.txt

@@ -5,15 +5,24 @@ set(CMAKE_C_STANDARD_REQUIRED ON)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 add_library(libvec STATIC
-    src/libvec.c
-    src/lib/char/char.c
-    src/lib/utils/utils.c
+    src/char.c
+    src/int.c
+    src/utils.c
+    src/float.c
+    src/string.c
     # Add your other types here as you implement them:
-    # src/lib/float/float.c
-    # src/lib/int/int.c
-    # src/lib/string/string.c
 )
 
+include(FetchContent)
+FetchContent_Declare(libstr
+	GIT_REPOSITORY https://git.moomancer.xyz/DarthMooMancer/libstr.git
+        GIT_TAG        main
+        GIT_SHALLOW    TRUE
+)
+FetchContent_MakeAvailable(libstr)
+
+target_link_libraries(libvec PRIVATE libstr)
+
 target_include_directories(libvec
     # PRIVATE: Internal headers under src/lib are only visible
     # to files being compiled into libvec (char.c, utils.c, libvec.c).
@@ -22,7 +31,7 @@ target_include_directories(libvec
     # PUBLIC: Consumers (and test_runner) are granted access ONLY to include/
     PUBLIC
         ${CMAKE_CURRENT_SOURCE_DIR}/include
-        ${CMAKE_CURRENT_SOURCE_DIR}/src/lib # Turn back to private when ready
+    #     ${CMAKE_CURRENT_SOURCE_DIR}/src/lib # Turn back to private when ready
 )
 
 add_executable(libvec_bin src/main.c)

Makefile

@@ -0,0 +1,143 @@
+# ==============================================================================
+# Toolchain & Executables
+# ==============================================================================
+LLVM_DIR      ?= /opt/homebrew/opt/llvm/bin
+CC            := $(LLVM_DIR)/clang
+LLVM_PROFDATA := $(LLVM_DIR)/llvm-profdata
+LLVM_COV      := $(LLVM_DIR)/llvm-cov
+CPPCHECK      := cppcheck
+
+# libstr is populated by CMake's FetchContent (run `cmake -B build` once)
+LIBSTR_DIR    := build/_deps/libstr-src
+
+# ==============================================================================
+# Flags & Directories
+# ==============================================================================
+CFLAGS        := -std=c23 -Wall -Wextra -Wpedantic -Wshadow \
+                 -Wconversion -Wsign-conversion \
+                 -g -O1 -fno-omit-frame-pointer
+SAN_FLAGS     := -fsanitize=address,undefined
+INCLUDES      := -Iinclude -Isrc/lib -Isrc/lib/int -Isrc/lib/utils
+
+ASAN_ENV      := ASAN_OPTIONS="allocator_may_return_null=1:detect_stack_use_after_return=1" \
+                 UBSAN_OPTIONS="halt_on_error=1:print_stacktrace=1"
+
+CPPCHECK_FLAGS := --enable=all \
+                  --inconclusive \
+                  --error-exitcode=1 \
+                  --check-level=exhaustive \
+                  --suppress=missingIncludeSystem \
+                  --suppress=unmatchedSuppression \
+                  --suppress=unusedFunction \
+                  --suppress=staticFunction \
+                  --inline-suppr \
+                  $(INCLUDES)
+
+# Sources & Build Directories
+SRCS          := src/lib/int/int.c src/lib/utils/utils.c
+TEST_SRC      := tests/test_learn.c
+FUZZ_SRC      := tests/fuzz_char.c
+
+STRING_SRCS   := src/string.c src/utils.c $(LIBSTR_DIR)/src/string.c
+TEST_STRING_SRC := tests/test_string.c
+
+BIN_DIR       := tests/bin
+CACHE_DIR     := tests/cache
+
+TEST_BIN      := $(BIN_DIR)/test_learn_runner
+TSAN_BIN      := $(BIN_DIR)/test_tsan_runner
+FUZZ_BIN      := $(BIN_DIR)/fuzz_char_runner
+COV_BIN       := $(BIN_DIR)/test_cov_runner
+TEST_STRING_BIN := $(BIN_DIR)/test_string_runner
+
+# ==============================================================================
+# Targets & Workflow Rules
+# ==============================================================================
+.PHONY: all test test-string sanitize check check-sources analyze cppcheck fuzz cov-build cov clean
+
+all: test
+
+$(BIN_DIR) $(CACHE_DIR):
+	@mkdir -p $@
+
+# --- Compilation Targets ---
+
+$(TEST_BIN): $(SRCS) $(TEST_SRC) | $(BIN_DIR)
+	$(CC) $(CFLAGS) $(SAN_FLAGS) $(INCLUDES) $^ -o $@
+
+$(TEST_STRING_BIN): $(STRING_SRCS) $(TEST_STRING_SRC) | $(BIN_DIR)
+	$(CC) $(CFLAGS) $(SAN_FLAGS) $(INCLUDES) -I$(LIBSTR_DIR)/include $^ -o $@
+
+$(TSAN_BIN): $(SRCS) $(TEST_SRC) | $(BIN_DIR)
+	$(CC) $(CFLAGS) -fsanitize=thread $(INCLUDES) $^ -o $@
+
+$(FUZZ_BIN): $(SRCS) $(FUZZ_SRC) | $(BIN_DIR)
+	$(CC) $(CFLAGS) -fsanitize=fuzzer,address,undefined $(INCLUDES) $^ -o $@
+
+# --- Testing & Sanitizer Suites ---
+
+test: $(TEST_BIN)
+	@echo "=== Running Unit Tests (ASan + UBSan) ==="
+	@$(ASAN_ENV) ./$(TEST_BIN)
+
+test-string: $(TEST_STRING_BIN)
+	@echo "=== Running vec_string Unit Tests (ASan + UBSan) ==="
+	@$(ASAN_ENV) ./$(TEST_STRING_BIN)
+
+sanitize: $(TEST_BIN) $(TSAN_BIN)
+	@echo "\n=== [1/2] Running Address + UndefinedBehavior Sanitizers ==="
+	@$(ASAN_ENV) ./$(TEST_BIN)
+	@echo "\n=== [2/2] Running ThreadSanitizer ==="
+	@./$(TSAN_BIN)
+	@echo "\n>>> Sanitizers passed with zero defects."
+
+# Unified master check: runtime sanitizers, static analyzer, and cppcheck
+check: sanitize analyze cppcheck
+	@echo "\n=============================================="
+	@echo " ALL TESTS, SANITIZERS & STATIC CHECKS PASSED "
+	@echo "=============================================="
+
+fuzz: $(FUZZ_BIN)
+	@echo "=== Starting Fuzzer (Press Ctrl+C to stop) ==="
+	@$(ASAN_ENV) ./$(FUZZ_BIN) -max_total_time=60
+
+# --- Coverage Profiling ---
+
+cov-build: $(SRCS) $(TEST_SRC) | $(BIN_DIR)
+	$(CC) $(CFLAGS) $(SAN_FLAGS) -fprofile-instr-generate -fcoverage-mapping $(INCLUDES) $^ -o $(COV_BIN)
+
+cov: cov-build | $(CACHE_DIR)
+	@echo "=== Recording Coverage Profile Data ==="
+	@$(ASAN_ENV) LLVM_PROFILE_FILE="$(CACHE_DIR)/test_char.profdata_raw" ./$(COV_BIN)
+	@$(LLVM_PROFDATA) merge -sparse $(CACHE_DIR)/test_char.profdata_raw -o $(CACHE_DIR)/test_char.profdata
+	@echo "\n=== Line & Branch Coverage Report: src/lib/char/char.c ==="
+	@$(LLVM_COV) report $(COV_BIN) -instr-profile=$(CACHE_DIR)/test_char.profdata src/lib/char/char.c
+	@$(LLVM_COV) show $(COV_BIN) -instr-profile=$(CACHE_DIR)/test_char.profdata src/lib/char/char.c --format=html > coverage.html
+	@echo "\nDetailed HTML report written to coverage.html."
+
+# --- Static Analysis & Object Checking ---
+
+check-sources: | $(BIN_DIR)
+	@echo "=== Compiling Sources to Object Files (ASan + UBSan) ==="
+	$(CC) $(CFLAGS) $(SAN_FLAGS) $(INCLUDES) -c src/lib/char/char.c -o $(BIN_DIR)/char.o
+	$(CC) $(CFLAGS) $(SAN_FLAGS) $(INCLUDES) -c src/lib/utils/utils.c -o $(BIN_DIR)/utils.o
+	@echo "Library sources compiled cleanly."
+
+analyze:
+	@echo "=== Running Clang Static Analyzer ==="
+	@$(CC) $(CFLAGS) $(INCLUDES) \
+		--analyze \
+		-Xanalyzer -analyzer-output=text \
+		-Xanalyzer -analyzer-checker=core,unix,deadcode,security \
+		$(SRCS)
+	@echo "Clang Static Analyzer complete: zero defects."
+
+cppcheck:
+	@echo "=== Running Cppcheck Static Analysis ==="
+	@$(CPPCHECK) $(CPPCHECK_FLAGS) include/ src/
+	@echo "Cppcheck passed with zero defects."
+
+# --- Housekeeping ---
+
+clean:
+	rm -rf $(BIN_DIR)/* $(CACHE_DIR)/* coverage.html

Notes.md

@@ -1,23 +0,0 @@
-```mermaid
-flowchart TD
-    Start([Function Called]) --> CheckErr{Did an error occur?}
-
-    %% Error path
-    CheckErr -->|Yes| PushBit["Bitwise OR error code into err<br/>err |= ERROR_BIT"]
-    PushBit --> CheckOrigin{Is origin == NULL?}
-    CheckOrigin -->|Yes| SetOrigin["Record location in origin<br/>origin = __func__ / __FILE__"]
-    CheckOrigin -->|No| KeepOrigin[Preserve original root cause]
-
-    SetOrigin --> ReturnStruct
-    KeepOrigin --> ReturnStruct
-
-    %% Success / Normal path
-    CheckErr -->|No| ComputeValue["Write computation result<br/>value = result"]
-    ComputeValue --> ReturnStruct
-
-    ReturnStruct(["Return / Pass Out _err_t"]) --> Caller{Caller Inspection}
-
-    Caller -->|Check errors| InspectBits[Inspect bit flags in err]
-    Caller -->|Read payload| ReadValue[Access value data]
-    Caller -->|Debug / Log| PrintOrigin[Print root cause origin]
-```

include/libvec.h

@@ -1,6 +0,0 @@
-#ifndef LIBVEC_H
-#define LIBVEC_H
-
-// Add code here
-
-#endif

include/libvec/char.h

@@ -0,0 +1,113 @@
+#ifndef LIBVEC_CHAR_H
+#define LIBVEC_CHAR_H
+
+#include <libvec/utils.h>
+
+// Will add DOCS later
+
+typedef struct
+{
+	char* array;
+	size_t size;
+	size_t capacity;
+	size_t max_size;
+} vec_char;
+
+__attribute__((overloadable)) size_t
+__null_check(const vec_char* ptr, err_t* status);
+
+__attribute__((overloadable)) size_t
+__null_check(const char* ptr, err_t* status);
+
+size_t
+__origin_override(err_t* status, char* str);
+
+void
+vec_char_print_vec(const vec_char* ptr, err_t* err);
+
+vec_char
+vec_char_cpy(const char* src, const size_t src_size, err_t* err);
+
+void
+vec_char_push_back(vec_char* ptr, const char val, err_t* err);
+
+void
+vec_char_pop_back(vec_char* ptr, err_t* err);
+
+void
+vec_char_reserve(vec_char* ptr, const size_t capacity, err_t* err);
+
+void
+vec_char_shrink_to_fit(vec_char* ptr, err_t* err);
+
+void
+vec_char_swap(vec_char* ptr_a, vec_char* ptr_b, err_t* err);
+
+const char*
+vec_char_data(const vec_char* ptr, err_t* err);
+
+size_t
+vec_char_size(const vec_char* ptr, err_t* err);
+
+size_t
+vec_char_capacity(const vec_char* ptr, err_t* err);
+
+size_t
+vec_char_max_size(const vec_char* ptr, err_t* err);
+
+void
+vec_char_delete(vec_char* ptr, err_t* err);
+
+void
+vec_char_clear(vec_char* ptr, err_t* err);
+
+char*
+vec_char_at(const vec_char* ptr, const size_t idx, err_t* err);
+
+size_t
+vec_char_begin(const vec_char* ptr, err_t* err);
+
+size_t
+vec_char_end(const vec_char* ptr, err_t* err);
+
+char
+vec_char_front(const vec_char* ptr, err_t* err);
+
+char
+vec_char_back(const vec_char* ptr, err_t* err);
+
+size_t
+vec_char_empty(const vec_char* ptr, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_erase(vec_char* ptr, const size_t iter, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_erase(vec_char* ptr, const size_t iter_start, const size_t iter_end,
+	       err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_resize(vec_char* ptr, const size_t size, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_resize(vec_char* ptr, const size_t size, const char val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_assign(vec_char* ptr, const vec_char* iterator,
+		const size_t iter_start, const size_t iter_end, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_assign(vec_char* ptr, const size_t amount, const char val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_insert(vec_char* ptr, const size_t iter, const char val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_insert(vec_char* ptr, const size_t iter, const size_t amount,
+		const char val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_char_insert(vec_char* ptr, const vec_char* iterator, const size_t iter,
+		const size_t iter_start, const size_t iter_end, err_t* err);
+
+#endif

include/libvec/float.h

@@ -0,0 +1,107 @@
+#ifndef LIBVEC_FLOAT_H
+#define LIBVEC_FLOAT_H
+
+#include <libvec/utils.h>
+
+// Will add DOCS later
+
+typedef struct
+{
+	float* array;
+	size_t size;
+	size_t capacity;
+	size_t max_size;
+} vec_float;
+
+void
+vec_float_print_vec(const vec_float* ptr, err_t* err);
+
+vec_float
+vec_float_cpy(const float* src, const size_t src_size, err_t* err);
+
+void
+vec_float_push_back(vec_float* ptr, const float val, err_t* err);
+
+void
+vec_float_pop_back(vec_float* ptr, err_t* err);
+
+void
+vec_float_reserve(vec_float* ptr, const size_t capacity, err_t* err);
+
+void
+vec_float_shrink_to_fit(vec_float* ptr, err_t* err);
+
+void
+vec_float_swap(vec_float* ptr_a, vec_float* ptr_b, err_t* err);
+
+const float*
+vec_float_data(const vec_float* ptr, err_t* err);
+
+size_t
+vec_float_size(const vec_float* ptr, err_t* err);
+
+size_t
+vec_float_capacity(const vec_float* ptr, err_t* err);
+
+size_t
+vec_float_max_size(const vec_float* ptr, err_t* err);
+
+void
+vec_float_delete(vec_float* ptr, err_t* err);
+
+void
+vec_float_clear(vec_float* ptr, err_t* err);
+
+float*
+vec_float_at(const vec_float* ptr, const size_t idx, err_t* err);
+
+size_t
+vec_float_begin(const vec_float* ptr, err_t* err);
+
+size_t
+vec_float_end(const vec_float* ptr, err_t* err);
+
+float
+vec_float_front(const vec_float* ptr, err_t* err);
+
+float
+vec_float_back(const vec_float* ptr, err_t* err);
+
+size_t
+vec_float_empty(const vec_float* ptr, err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_erase(vec_float* ptr, const size_t iter, err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_erase(vec_float* ptr, const size_t iter_start, const size_t iter_end,
+		err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_resize(vec_float* ptr, const size_t size, err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_resize(vec_float* ptr, const size_t size, const float val,
+		 err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_assign(vec_float* ptr, const vec_float* iterator,
+		 const size_t iter_start, const size_t iter_end, err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_assign(vec_float* ptr, const size_t amount, const float val,
+		 err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_insert(vec_float* ptr, const size_t iter, const float val,
+		 err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_insert(vec_float* ptr, const size_t iter, const size_t amount,
+		 const float val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_float_insert(vec_float* ptr, const vec_float* iterator, const size_t iter,
+		 const size_t iter_start, const size_t iter_end, err_t* err);
+
+#endif

include/libvec/int.h

@@ -0,0 +1,113 @@
+#ifndef LIBVEC_INT_H
+#define LIBVEC_INT_H
+
+#include <libvec/utils.h>
+
+// Will add DOCS later
+
+typedef struct
+{
+	int* array;
+	size_t size;
+	size_t capacity;
+	size_t max_size;
+} vec_int;
+
+__attribute__((overloadable)) size_t
+__null_check(const vec_int* ptr, err_t* status);
+
+__attribute__((overloadable)) size_t
+__null_check(const int* ptr, err_t* status);
+
+size_t
+__origin_override(err_t* status, char* str);
+
+void
+vec_int_print_vec(const vec_int* ptr, err_t* err);
+
+vec_int
+vec_int_cpy(const int* src, const size_t src_size, err_t* err);
+
+void
+vec_int_push_back(vec_int* ptr, const int val, err_t* err);
+
+void
+vec_int_pop_back(vec_int* ptr, err_t* err);
+
+void
+vec_int_reserve(vec_int* ptr, const size_t capacity, err_t* err);
+
+void
+vec_int_shrink_to_fit(vec_int* ptr, err_t* err);
+
+void
+vec_int_swap(vec_int* ptr_a, vec_int* ptr_b, err_t* err);
+
+const int*
+vec_int_data(const vec_int* ptr, err_t* err);
+
+size_t
+vec_int_size(const vec_int* ptr, err_t* err);
+
+size_t
+vec_int_capacity(const vec_int* ptr, err_t* err);
+
+size_t
+vec_int_max_size(const vec_int* ptr, err_t* err);
+
+void
+vec_int_delete(vec_int* ptr, err_t* err);
+
+void
+vec_int_clear(vec_int* ptr, err_t* err);
+
+int*
+vec_int_at(const vec_int* ptr, const size_t idx, err_t* err);
+
+size_t
+vec_int_begin(const vec_int* ptr, err_t* err);
+
+size_t
+vec_int_end(const vec_int* ptr, err_t* err);
+
+int
+vec_int_front(const vec_int* ptr, err_t* err);
+
+int
+vec_int_back(const vec_int* ptr, err_t* err);
+
+size_t
+vec_int_empty(const vec_int* ptr, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_erase(vec_int* ptr, const size_t iter, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_erase(vec_int* ptr, const size_t iter_start, const size_t iter_end,
+	      err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_resize(vec_int* ptr, const size_t size, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_resize(vec_int* ptr, const size_t size, const int val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_assign(vec_int* ptr, const vec_int* iterator, const size_t iter_start,
+	       const size_t iter_end, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_assign(vec_int* ptr, const size_t amount, const int val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_insert(vec_int* ptr, const size_t iter, const int val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_insert(vec_int* ptr, const size_t iter, const size_t amount,
+	       const int val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_int_insert(vec_int* ptr, const vec_int* iterator, const size_t iter,
+	       const size_t iter_start, const size_t iter_end, err_t* err);
+
+#endif

include/libvec/string.h

@@ -0,0 +1,115 @@
+#ifndef LIBVEC_STRING_H
+#define LIBVEC_STRING_H
+
+#include <libstr/string.h>
+#include <libvec/utils.h>
+
+// Will add DOCS later
+
+typedef struct
+{
+	String* array;
+	size_t size;
+	size_t capacity;
+	size_t max_size;
+} vec_string;
+
+__attribute__((overloadable)) size_t
+__null_check(const vec_string* ptr, err_t* status);
+
+__attribute__((overloadable)) size_t
+__null_check(const char* ptr, err_t* status);
+
+void
+vec_string_print_vec(const vec_string* ptr, err_t* err);
+
+vec_string
+vec_string_cpy(const String* src, const size_t src_size, err_t* err);
+
+void
+vec_string_push_back(vec_string* ptr, const String val, err_t* err);
+
+void
+vec_string_pop_back(vec_string* ptr, err_t* err);
+
+void
+vec_string_reserve(vec_string* ptr, const size_t capacity, err_t* err);
+
+void
+vec_string_shrink_to_fit(vec_string* ptr, err_t* err);
+
+void
+vec_string_swap(vec_string* ptr_a, vec_string* ptr_b, err_t* err);
+
+const String*
+vec_string_data(const vec_string* ptr, err_t* err);
+
+size_t
+vec_string_size(const vec_string* ptr, err_t* err);
+
+size_t
+vec_string_capacity(const vec_string* ptr, err_t* err);
+
+size_t
+vec_string_max_size(const vec_string* ptr, err_t* err);
+
+void
+vec_string_delete(vec_string* ptr, err_t* err);
+
+void
+vec_string_clear(vec_string* ptr, err_t* err);
+
+String*
+vec_string_at(const vec_string* ptr, const size_t idx, err_t* err);
+
+size_t
+vec_string_begin(const vec_string* ptr, err_t* err);
+
+size_t
+vec_string_end(const vec_string* ptr, err_t* err);
+
+String
+vec_string_front(const vec_string* ptr, err_t* err);
+
+String
+vec_string_back(const vec_string* ptr, err_t* err);
+
+size_t
+vec_string_empty(const vec_string* ptr, err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_erase(vec_string* ptr, const size_t iter, err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_erase(vec_string* ptr, const size_t iter_start,
+		 const size_t iter_end, err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_resize(vec_string* ptr, const size_t size, err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_resize(vec_string* ptr, const size_t size, const String val,
+		  err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_assign(vec_string* ptr, const vec_string* iterator,
+		  const size_t iter_start, const size_t iter_end, err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_assign(vec_string* ptr, const size_t amount, const String val,
+		  err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_insert(vec_string* ptr, const size_t iter, const String val,
+		  err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_insert(vec_string* ptr, const size_t iter, const size_t amount,
+		  const String val, err_t* err);
+
+__attribute__((overloadable)) void
+vec_string_insert(vec_string* ptr, const vec_string* iterator,
+		  const size_t iter, const size_t iter_start,
+		  const size_t iter_end, err_t* err);
+
+#endif

include/libvec/utils.h

@@ -4,8 +4,6 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#define CAPACITY 1024
-#define VEC_FAULT_BITS 32
 static const size_t VEC_MAX = SIZE_MAX / sizeof(int);
 
 #define ERROR_LIST(X)                                                      \
@@ -22,7 +20,8 @@ static const size_t VEC_MAX = SIZE_MAX / sizeof(int);
 	  "Max :- Vector Max value is overloaded")                         \
 	X(ERR_ORIGIN_UNALTERABLE, (1u << 7),                               \
 	  "Origin :- Origin is non-null and cannot be overridden")         \
-	X(ERR_STR_NULL, (1u << 8), "String :- String is null value")
+	X(ERR_STR_NULL, (1u << 8), "String :- String is null value")       \
+	X(ERR_ERR_T_NULL, (1u << 9), "ERR_T :- Passed error is null")
 
 typedef enum
 {
@@ -44,30 +43,23 @@ typedef struct
 } err_t;
 
 #define ERR_T_INIT { .flags = 0, .origin = NULL }
-#define VEC_INIT                   \
-	{ ._internal_arr = NULL,   \
-	  ._internal_size = 0,     \
-	  ._internal_capacity = 0, \
-	  ._internal_max_size = VEC_MAX }
-
-const char*
-vec_get_error_desc(ERROR_CODES err);
+#define VEC_INIT \
+	{ .array = NULL, .size = 0, .capacity = 0, .max_size = VEC_MAX }
 
 void
 vec_print_errs(const err_t err);
 
-// void
-// _vec_update_origin(err_t* err, char* str);
-
 void
-print_bits(unsigned int num);
+vec_print_bits(unsigned int num);
+
+size_t
+__origin_override(err_t* status, char* str);
+
+__attribute__((overloadable)) size_t
+__null_check(const float* ptr, err_t* status);
 
 #define LOG(msg) printf("LOG: %s\n", msg)     /**< Print log message*/
-#define DEBUG(msg) printf("DEBUB: %s\n", msg) /**< Print debug message*/
-#define LOGERROR(error_code)  \
-	printf("ERROR: %s\n", \
-	       error_messages[error_code]) /**< Print log error message*/
-
-#define find_len(arr) sizeof(arr) / sizeof(arr[0])
+#define DEBUG(msg) printf("DEBUG: %s\n", msg) /**< Print debug message*/
+#define find_len(arr) (sizeof(arr) / sizeof((arr)[0]))
 
 #endif

src/char.c

@@ -0,0 +1,891 @@
+#include <libvec/char.h>
+#include <libvec/utils.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+__attribute__((overloadable)) size_t
+__null_check(const vec_char* ptr, err_t* status)
+{
+	if (status == nullptr)
+	{
+		return ERR_ERR_T_NULL;
+	}
+	if (ptr == nullptr)
+	{
+		status->flags |= ERR_VEC_NULL;
+		return ERR_VEC_NULL;
+	}
+	if (ptr->array == nullptr)
+	{
+		status->flags |= ERR_BUF_NULL;
+	}
+
+	return status->flags;
+}
+
+void
+vec_char_print_vec(const vec_char* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		return;
+	}
+	for (size_t i = 0; i < ptr->size; i++)
+	{
+		printf("%c ", ptr->array[i]);
+	}
+	printf("\n");
+}
+
+vec_char
+vec_char_cpy(const char* src, const size_t src_size, err_t* err)
+{
+	vec_char self = VEC_INIT;
+	err_t status = ERR_T_INIT;
+
+	size_t null = __null_check(src, err);
+	if (null != 0)
+	{
+		if (null & ERR_ERR_T_NULL)
+		{
+			return self;
+		}
+		__origin_override(err, "CPY");
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size == 0)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_ZERO;
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size > self.max_size)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return self;
+	}
+	self.array = malloc(src_size * sizeof(char));
+	if (self.array == nullptr)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_ALLOC_FAIL;
+		return self;
+	}
+	memcpy(self.array, src, src_size * sizeof(char));
+	self.size = src_size;
+	self.capacity = src_size;
+	return self;
+}
+
+void
+vec_char_push_back(vec_char* ptr, const char val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	char* res;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size + 1 > ptr->max_size)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		res = malloc(1 * sizeof(char));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->size = 0;
+	}
+
+	else if (ptr->size + 1 > ptr->capacity)
+	{
+		size_t dst_cap = (ptr->capacity / 2) + ptr->capacity;
+		if (dst_cap == ptr->capacity)
+		{
+			dst_cap++;
+		}
+		if (dst_cap > ptr->max_size)
+		{
+			dst_cap = ptr->max_size;
+			DEBUG(
+			    "Capacity cannot be grown any further due "
+			    "to hitting max size");
+		}
+		res = realloc(ptr->array, dst_cap * sizeof(char));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_SIZE_OVERFLOW;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = dst_cap;
+	}
+	ptr->array[ptr->size] = val;
+	ptr->size++;
+	return;
+}
+
+void
+vec_char_pop_back(vec_char* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		__origin_override(err, "POP_BACK");
+		return;
+	}
+
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "POP_BACK");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	ptr->array[ptr->size - 1] = 0;
+	ptr->size--;
+}
+
+void
+vec_char_reserve(vec_char* ptr, const size_t capacity, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		if ((status.flags & ERR_VEC_NULL) != 0)
+		{
+			__origin_override(err, "RESERVE");
+			err->flags |= ERR_VEC_NULL;
+			return;
+		}
+	}
+	if (ptr->max_size < capacity)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (capacity == 0)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	char* res = realloc(ptr->array, capacity * sizeof(char));
+	if (res == nullptr)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_ALLOC_FAIL;
+		return;
+	}
+	ptr->array = res;
+	ptr->capacity = capacity;
+	if (ptr->size > capacity)
+	{
+		ptr->size = capacity;
+	}
+	return;
+}
+
+void
+vec_char_shrink_to_fit(vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	vec_char_reserve(ptr, ptr->size, err);
+}
+
+void
+vec_char_swap(vec_char* ptr_a, vec_char* ptr_b, err_t* err)
+{
+	err_t status_1 = ERR_T_INIT, status_2 = ERR_T_INIT;
+	if ((__null_check(ptr_a, &status_1) & ERR_VEC_NULL) != 0 ||
+	    (__null_check(ptr_b, &status_2) & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "SWAP");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	vec_char self = *ptr_a;
+	*ptr_a = *ptr_b;
+	*ptr_b = self;
+	return;
+}
+
+const char*
+vec_char_data(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DATA");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	return &ptr->array[0];
+}
+
+size_t
+vec_char_size(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->size;
+}
+
+size_t
+vec_char_capacity(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CAPACITY");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->capacity;
+}
+
+size_t
+vec_char_max_size(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "MAX_SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->max_size;
+}
+
+void
+vec_char_delete(vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DELETE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array != nullptr)
+	{
+		free(ptr->array);
+		ptr->array = nullptr;
+	}
+	ptr->size = 0;
+	ptr->capacity = 0;
+}
+
+void
+vec_char_clear(vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CLEAR");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size > 0)
+	{
+		memset(ptr->array, 0, ptr->size);
+		ptr->size = 0;
+	}
+}
+
+char*
+vec_char_at(const vec_char* ptr, const size_t idx, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "AT");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	if (idx >= ptr->size)
+	{
+		__origin_override(err, "AT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return nullptr;
+	}
+	return &ptr->array[idx];
+}
+
+size_t
+vec_char_begin(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BEGIN");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	return 0;
+}
+
+size_t
+vec_char_end(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= ERR_SIZE_ZERO;
+		return status.flags;
+	}
+	return (size_t)(ptr->size - 1);
+}
+
+char
+vec_char_front(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "FRONT");
+		err->flags |= status.flags;
+		return -1;
+	}
+	if (vec_char_at(ptr, 0, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return 0;
+	}
+	return *vec_char_at(ptr, 0, err);
+}
+
+char
+vec_char_back(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BACK");
+		err->flags |= status.flags;
+		return -1;
+	}
+	if (vec_char_at(ptr, 0, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return 0;
+	}
+	return *vec_char_at(ptr, ptr->size - 1, err);
+}
+
+size_t
+vec_char_empty(const vec_char* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "EMPTY");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		return ptr->size;
+	}
+	return status.flags;
+}
+
+__attribute__((overloadable)) void
+vec_char_erase(vec_char* ptr, const size_t iter, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter >= ptr->size)
+	{
+		return;
+	}
+	memmove(&ptr->array[iter], &ptr->array[iter + 1],
+		(ptr->size - iter - 1) * sizeof(char));
+	ptr->array[ptr->size - 1] = 0;
+	ptr->size--;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_erase(vec_char* ptr, const size_t iter_start, const size_t iter_end,
+	       err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+
+	if (ptr->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	size_t diff = iter_end - iter_start;
+	memmove(&ptr->array[iter_start], &ptr->array[iter_end],
+		(ptr->size - iter_end) * sizeof(char));
+	memset(&ptr->array[ptr->size - diff], 0, sizeof(char) * diff);
+	ptr->size -= diff;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_resize(vec_char* ptr, const size_t size, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_char_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		for (size_t i = 0; i < size; i++)
+		{
+			ptr->array[i] = 0;
+		}
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_char_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != tmpcp)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		memset(&ptr->array[size], 0, ptr->size - size);
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		memset(&ptr->array[ptr->size], 0, size - ptr->size);
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_resize(vec_char* ptr, const size_t size, const char val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_char_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		for (size_t i = 0; i < size; i++)
+		{
+			ptr->array[i] = val;
+		}
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_char_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		memset(&ptr->array[size], val, ptr->size - size);
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		memset(&ptr->array[ptr->size], val, size - ptr->size);
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_assign(vec_char* ptr, const vec_char* iterator,
+		const size_t iter_start, const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0 ||
+	    __null_check(iterator, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	if (iterator->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	vec_char_erase(ptr, vec_char_begin(ptr, &status),
+		       vec_char_end(ptr, &status) + 1, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_char_reserve(ptr, (iter_end - iter_start), &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		char* res = vec_char_at(iterator, i, &status);
+		if (res == nullptr)
+		{
+			err->flags |= ERR_OUT_OF_BOUNDS;
+			return;
+		}
+		vec_char_push_back(ptr, *res, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_assign(vec_char* ptr, const size_t amount, const char val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	vec_char_erase(ptr, vec_char_begin(ptr, &status),
+		       vec_char_end(ptr, &status) + 1, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_char_reserve(ptr, amount, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = 0; i < amount; i++)
+	{
+		vec_char_push_back(ptr, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_insert(vec_char* ptr, const size_t iter, const char val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		char* res = malloc(1 * sizeof(char));
+		if (res == nullptr)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= ERR_BUF_NULL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->array[0] = val;
+		ptr->size = 1;
+		return;
+	}
+	if (ptr->max_size < ptr->size + 1)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	vec_char_push_back(ptr, 0, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = ptr->size - 1; i > iter; i--)
+	{
+		ptr->array[i] = ptr->array[i - 1];
+	}
+	ptr->array[iter] = val;
+
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_insert(vec_char* ptr, const size_t iter, const size_t amount,
+		const char val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	for (size_t i = iter; i < iter + amount; i++)
+	{
+		vec_char_insert(ptr, i, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_char_insert(vec_char* ptr, const vec_char* iterator, const size_t iter,
+		const size_t iter_start, const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	__null_check(iterator, &status);
+	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter_end <= iter_start || iter_end > iterator->size ||
+	    iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		vec_char_insert(ptr, iter + (i - iter_start),
+				iterator->array[i], &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}

src/float.c

@@ -0,0 +1,891 @@
+#include <libvec/float.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+__attribute__((overloadable)) size_t
+__null_check(const vec_float* ptr, err_t* status)
+{
+	if (status == nullptr)
+	{
+		return ERR_ERR_T_NULL;
+	}
+	if (ptr == nullptr)
+	{
+		status->flags |= ERR_VEC_NULL;
+		return ERR_VEC_NULL;
+	}
+	if (ptr->array == nullptr)
+	{
+		status->flags |= ERR_BUF_NULL;
+	}
+
+	return status->flags;
+}
+
+void
+vec_float_print_vec(const vec_float* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		return;
+	}
+	for (size_t i = 0; i < ptr->size; i++)
+	{
+		printf("%f ", ptr->array[i]);
+	}
+	printf("\n");
+}
+
+vec_float
+vec_float_cpy(const float* src, const size_t src_size, err_t* err)
+{
+	vec_float self = VEC_INIT;
+	err_t status = ERR_T_INIT;
+
+	size_t null = __null_check(src, err);
+	if (null != 0)
+	{
+		if (null & ERR_ERR_T_NULL)
+		{
+			return self;
+		}
+		__origin_override(err, "CPY");
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size == 0)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_ZERO;
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size > self.max_size)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return self;
+	}
+	self.array = malloc(src_size * sizeof(float));
+	if (self.array == nullptr)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_ALLOC_FAIL;
+		return self;
+	}
+	memcpy(self.array, src, src_size * sizeof(float));
+	self.size = src_size;
+	self.capacity = src_size;
+	return self;
+}
+
+void
+vec_float_push_back(vec_float* ptr, const float val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	float* res;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size + 1 > ptr->max_size)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		res = malloc(1 * sizeof(float));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->size = 0;
+	}
+
+	else if (ptr->size + 1 > ptr->capacity)
+	{
+		size_t dst_cap = (ptr->capacity / 2) + ptr->capacity;
+		if (dst_cap == ptr->capacity)
+		{
+			dst_cap++;
+		}
+		if (dst_cap > ptr->max_size)
+		{
+			dst_cap = ptr->max_size;
+			DEBUG(
+			    "Capacity cannot be grown any further due "
+			    "to hitting max size");
+		}
+		res = realloc(ptr->array, dst_cap * sizeof(float));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_SIZE_OVERFLOW;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = dst_cap;
+	}
+	ptr->array[ptr->size] = val;
+	ptr->size++;
+	return;
+}
+
+void
+vec_float_pop_back(vec_float* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		__origin_override(err, "POP_BACK");
+		return;
+	}
+
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "POP_BACK");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	ptr->array[ptr->size - 1] = 0;
+	ptr->size--;
+}
+
+void
+vec_float_reserve(vec_float* ptr, const size_t capacity, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		if ((status.flags & ERR_VEC_NULL) != 0)
+		{
+			__origin_override(err, "RESERVE");
+			err->flags |= ERR_VEC_NULL;
+			return;
+		}
+	}
+	if (ptr->max_size < capacity)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (capacity == 0)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	float* res = realloc(ptr->array, capacity * sizeof(float));
+	if (res == nullptr)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_ALLOC_FAIL;
+		return;
+	}
+	ptr->array = res;
+	ptr->capacity = capacity;
+	if (ptr->size > capacity)
+	{
+		ptr->size = capacity;
+	}
+	return;
+}
+
+void
+vec_float_shrink_to_fit(vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	vec_float_reserve(ptr, ptr->size, err);
+}
+
+void
+vec_float_swap(vec_float* ptr_a, vec_float* ptr_b, err_t* err)
+{
+	err_t status_1 = ERR_T_INIT, status_2 = ERR_T_INIT;
+	if ((__null_check(ptr_a, &status_1) & ERR_VEC_NULL) != 0 ||
+	    (__null_check(ptr_b, &status_2) & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "SWAP");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	vec_float self = *ptr_a;
+	*ptr_a = *ptr_b;
+	*ptr_b = self;
+	return;
+}
+
+const float*
+vec_float_data(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DATA");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	return &ptr->array[0];
+}
+
+size_t
+vec_float_size(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->size;
+}
+
+size_t
+vec_float_capacity(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CAPACITY");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->capacity;
+}
+
+size_t
+vec_float_max_size(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "MAX_SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->max_size;
+}
+
+void
+vec_float_delete(vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DELETE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array != nullptr)
+	{
+		free(ptr->array);
+		ptr->array = nullptr;
+	}
+	ptr->size = 0;
+	ptr->capacity = 0;
+}
+
+void
+vec_float_clear(vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CLEAR");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size > 0)
+	{
+		memset(ptr->array, 0, ptr->size);
+		ptr->size = 0;
+	}
+}
+
+float*
+vec_float_at(const vec_float* ptr, const size_t idx, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "AT");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	if (idx >= ptr->size)
+	{
+		__origin_override(err, "AT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return nullptr;
+	}
+	return &ptr->array[idx];
+}
+
+size_t
+vec_float_begin(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BEGIN");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	return 0;
+}
+
+size_t
+vec_float_end(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= ERR_SIZE_ZERO;
+		return status.flags;
+	}
+	return (size_t)(ptr->size - 1);
+}
+
+float
+vec_float_front(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "FRONT");
+		err->flags |= status.flags;
+		return -1;
+	}
+	if (vec_float_at(ptr, 0, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return 0;
+	}
+	return *vec_float_at(ptr, 0, err);
+}
+
+float
+vec_float_back(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BACK");
+		err->flags |= status.flags;
+		return -1;
+	}
+	if (vec_float_at(ptr, 0, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return 0;
+	}
+	return *vec_float_at(ptr, ptr->size - 1, err);
+}
+
+size_t
+vec_float_empty(const vec_float* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "EMPTY");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		return ptr->size;
+	}
+	return status.flags;
+}
+
+__attribute__((overloadable)) void
+vec_float_erase(vec_float* ptr, const size_t iter, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter >= ptr->size)
+	{
+		return;
+	}
+	memmove(&ptr->array[iter], &ptr->array[iter + 1],
+		(ptr->size - iter - 1) * sizeof(float));
+	ptr->array[ptr->size - 1] = 0;
+	ptr->size--;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_erase(vec_float* ptr, const size_t iter_start, const size_t iter_end,
+		err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+
+	if (ptr->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	size_t diff = iter_end - iter_start;
+	memmove(&ptr->array[iter_start], &ptr->array[iter_end],
+		(ptr->size - iter_end) * sizeof(float));
+	memset(&ptr->array[ptr->size - diff], 0, sizeof(float) * diff);
+	ptr->size -= diff;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_resize(vec_float* ptr, const size_t size, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_float_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		for (size_t i = 0; i < size; i++)
+		{
+			ptr->array[i] = 0;
+		}
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_float_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != tmpcp)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		memset(&ptr->array[size], 0, ptr->size - size);
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		memset(&ptr->array[ptr->size], 0, size - ptr->size);
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_resize(vec_float* ptr, const size_t size, const float val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_float_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		for (size_t i = 0; i < size; i++)
+		{
+			ptr->array[i] = val;
+		}
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_float_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		memset(&ptr->array[size], val, ptr->size - size);
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		memset(&ptr->array[ptr->size], val, size - ptr->size);
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_assign(vec_float* ptr, const vec_float* iterator,
+		 const size_t iter_start, const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0 ||
+	    __null_check(iterator, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	if (iterator->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	vec_float_erase(ptr, vec_float_begin(ptr, &status),
+			vec_float_end(ptr, &status) + 1, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_float_reserve(ptr, (iter_end - iter_start), &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		float* res = vec_float_at(iterator, i, &status);
+		if (res == nullptr)
+		{
+			err->flags |= ERR_OUT_OF_BOUNDS;
+			return;
+		}
+		vec_float_push_back(ptr, *res, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_assign(vec_float* ptr, const size_t amount, const float val,
+		 err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	vec_float_erase(ptr, vec_float_begin(ptr, &status),
+			vec_float_end(ptr, &status) + 1, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_float_reserve(ptr, amount, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = 0; i < amount; i++)
+	{
+		vec_float_push_back(ptr, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_insert(vec_float* ptr, const size_t iter, const float val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		float* res = malloc(1 * sizeof(float));
+		if (res == nullptr)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= ERR_BUF_NULL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->array[0] = val;
+		ptr->size = 1;
+		return;
+	}
+	if (ptr->max_size < ptr->size + 1)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	vec_float_push_back(ptr, 0, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = ptr->size - 1; i > iter; i--)
+	{
+		ptr->array[i] = ptr->array[i - 1];
+	}
+	ptr->array[iter] = val;
+
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_insert(vec_float* ptr, const size_t iter, const size_t amount,
+		 const float val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	for (size_t i = iter; i < iter + amount; i++)
+	{
+		vec_float_insert(ptr, i, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_float_insert(vec_float* ptr, const vec_float* iterator, const size_t iter,
+		 const size_t iter_start, const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	__null_check(iterator, &status);
+	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter_end <= iter_start || iter_end > iterator->size ||
+	    iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		vec_float_insert(ptr, iter + (i - iter_start),
+				 iterator->array[i], &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}

src/int.c

@@ -0,0 +1,894 @@
+#include <libvec/int.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+__attribute__((overloadable)) size_t
+__null_check(const vec_int* ptr, err_t* status)
+{
+	if (status == nullptr)
+	{
+		return ERR_ERR_T_NULL;
+	}
+	if (ptr == nullptr)
+	{
+		status->flags |= ERR_VEC_NULL;
+		return ERR_VEC_NULL;
+	}
+	if (ptr->array == nullptr)
+	{
+		status->flags |= ERR_BUF_NULL;
+	}
+
+	return status->flags;
+}
+
+void
+vec_int_print_vec(const vec_int* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		return;
+	}
+	for (size_t i = 0; i < ptr->size; i++)
+	{
+		printf("%d ", ptr->array[i]);
+	}
+	printf("\n");
+}
+
+vec_int
+vec_int_cpy(const int* src, const size_t src_size, err_t* err)
+{
+	vec_int self = VEC_INIT;
+	err_t status = ERR_T_INIT;
+
+	size_t null = __null_check(src, err);
+	if (null != 0)
+	{
+		if (null & ERR_ERR_T_NULL)
+		{
+			return self;
+		}
+		__origin_override(err, "CPY");
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size == 0)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_ZERO;
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size > self.max_size)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return self;
+	}
+	self.array = malloc(src_size * sizeof(int));
+	if (self.array == nullptr)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_ALLOC_FAIL;
+		return self;
+	}
+	memcpy(self.array, src, src_size * sizeof(int));
+	self.size = src_size;
+	self.capacity = src_size;
+	return self;
+}
+
+void
+vec_int_push_back(vec_int* ptr, const int val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	int* res;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size + 1 > ptr->max_size)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		res = malloc(1 * sizeof(int));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->size = 0;
+	}
+
+	else if (ptr->size + 1 > ptr->capacity)
+	{
+		size_t dst_cap = (ptr->capacity / 2) + ptr->capacity;
+		if (dst_cap == ptr->capacity)
+		{
+			dst_cap++;
+		}
+		if (dst_cap > ptr->max_size)
+		{
+			dst_cap = ptr->max_size;
+			DEBUG(
+			    "Capacity cannot be grown any further due "
+			    "to hitting max size");
+		}
+		res = realloc(ptr->array, dst_cap * sizeof(int));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_SIZE_OVERFLOW;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = dst_cap;
+	}
+	ptr->array[ptr->size] = val;
+	ptr->size++;
+	return;
+}
+
+void
+vec_int_pop_back(vec_int* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		__origin_override(err, "POP_BACK");
+		return;
+	}
+
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "POP_BACK");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	ptr->array[ptr->size - 1] = 0;
+	ptr->size--;
+}
+
+void
+vec_int_reserve(vec_int* ptr, const size_t capacity, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		if ((status.flags & ERR_VEC_NULL) != 0)
+		{
+			__origin_override(err, "RESERVE");
+			err->flags |= ERR_VEC_NULL;
+			return;
+		}
+	}
+	if (ptr->max_size < capacity)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (capacity == 0)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	int* res = realloc(ptr->array, capacity * sizeof(int));
+	if (res == nullptr)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_ALLOC_FAIL;
+		return;
+	}
+	ptr->array = res;
+	ptr->capacity = capacity;
+	if (ptr->size > capacity)
+	{
+		ptr->size = capacity;
+	}
+	return;
+}
+
+void
+vec_int_shrink_to_fit(vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	vec_int_reserve(ptr, ptr->size, err);
+}
+
+void
+vec_int_swap(vec_int* ptr_a, vec_int* ptr_b, err_t* err)
+{
+	err_t status_1 = ERR_T_INIT, status_2 = ERR_T_INIT;
+	if ((__null_check(ptr_a, &status_1) & ERR_VEC_NULL) != 0 ||
+	    (__null_check(ptr_b, &status_2) & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "SWAP");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	vec_int self = *ptr_a;
+	*ptr_a = *ptr_b;
+	*ptr_b = self;
+	return;
+}
+
+const int*
+vec_int_data(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DATA");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	return &ptr->array[0];
+}
+
+size_t
+vec_int_size(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->size;
+}
+
+size_t
+vec_int_capacity(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CAPACITY");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->capacity;
+}
+
+size_t
+vec_int_max_size(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "MAX_SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->max_size;
+}
+
+void
+vec_int_delete(vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DELETE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array != nullptr)
+	{
+		free(ptr->array);
+		ptr->array = nullptr;
+	}
+	ptr->size = 0;
+	ptr->capacity = 0;
+}
+
+void
+vec_int_clear(vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CLEAR");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size > 0)
+	{
+		memset(ptr->array, 0, ptr->size * sizeof(int));
+		ptr->size = 0;
+	}
+}
+
+int*
+vec_int_at(const vec_int* ptr, const size_t idx, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "AT");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	if (idx >= ptr->size)
+	{
+		__origin_override(err, "AT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return nullptr;
+	}
+	return &ptr->array[idx];
+}
+
+size_t
+vec_int_begin(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BEGIN");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	return 0;
+}
+
+size_t
+vec_int_end(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= ERR_SIZE_ZERO;
+		return status.flags;
+	}
+	return (size_t)(ptr->size - 1);
+}
+
+int
+vec_int_front(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "FRONT");
+		err->flags |= status.flags;
+		return -1;
+	}
+	if (vec_int_at(ptr, 0, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return 0;
+	}
+	return *vec_int_at(ptr, 0, err);
+}
+
+int
+vec_int_back(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BACK");
+		err->flags |= status.flags;
+		return -1;
+	}
+	if (vec_int_at(ptr, 0, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return 0;
+	}
+	return *vec_int_at(ptr, ptr->size - 1, err);
+}
+
+size_t
+vec_int_empty(const vec_int* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "EMPTY");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		return ptr->size;
+	}
+	return status.flags;
+}
+
+__attribute__((overloadable)) void
+vec_int_erase(vec_int* ptr, const size_t iter, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter >= ptr->size)
+	{
+		return;
+	}
+	memmove(&ptr->array[iter], &ptr->array[iter + 1],
+		(ptr->size - iter - 1) * sizeof(int));
+	ptr->array[ptr->size - 1] = 0;
+	ptr->size--;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_erase(vec_int* ptr, const size_t iter_start, const size_t iter_end,
+	      err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+
+	if (ptr->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	size_t diff = iter_end - iter_start;
+	memmove(&ptr->array[iter_start], &ptr->array[iter_end],
+		(ptr->size - iter_end) * sizeof(int));
+	memset(&ptr->array[ptr->size - diff], 0, sizeof(int) * diff);
+	ptr->size -= diff;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_resize(vec_int* ptr, const size_t size, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_int_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		memset(ptr->array, 0, size * sizeof(int));
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_int_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != tmpcp)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		memset(&ptr->array[size], 0, (ptr->size - size) * sizeof(int));
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		memset(&ptr->array[ptr->size], 0,
+		       (size - ptr->size) * sizeof(int));
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_resize(vec_int* ptr, const size_t size, const int val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_int_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		for (size_t i = 0; i < size; i++)
+		{
+			ptr->array[i] = val;
+		}
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_int_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		for (size_t i = size; i < ptr->size; i++)
+		{
+			ptr->array[i] = 0;
+		}
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		for (size_t i = ptr->size; i < size; i++)
+		{
+			ptr->array[i] = val;
+		}
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_assign(vec_int* ptr, const vec_int* iterator, const size_t iter_start,
+	       const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0 ||
+	    __null_check(iterator, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	if (iterator->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	vec_int_erase(ptr, vec_int_begin(ptr, &status),
+		      vec_int_end(ptr, &status) + 1, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_int_reserve(ptr, (iter_end - iter_start), &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		int* res = vec_int_at(iterator, i, &status);
+		if (res == nullptr)
+		{
+			err->flags |= ERR_OUT_OF_BOUNDS;
+			return;
+		}
+		vec_int_push_back(ptr, *res, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_assign(vec_int* ptr, const size_t amount, const int val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	vec_int_erase(ptr, vec_int_begin(ptr, &status),
+		      vec_int_end(ptr, &status) + 1, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_int_reserve(ptr, amount, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = 0; i < amount; i++)
+	{
+		vec_int_push_back(ptr, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_insert(vec_int* ptr, const size_t iter, const int val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		int* res = malloc(1 * sizeof(int));
+		if (res == nullptr)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= ERR_BUF_NULL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->array[0] = val;
+		ptr->size = 1;
+		return;
+	}
+	if (ptr->max_size < ptr->size + 1)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	vec_int_push_back(ptr, 0, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = ptr->size - 1; i > iter; i--)
+	{
+		ptr->array[i] = ptr->array[i - 1];
+	}
+	ptr->array[iter] = val;
+
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_insert(vec_int* ptr, const size_t iter, const size_t amount,
+	       const int val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	for (size_t i = iter; i < iter + amount; i++)
+	{
+		vec_int_insert(ptr, i, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_int_insert(vec_int* ptr, const vec_int* iterator, const size_t iter,
+	       const size_t iter_start, const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	__null_check(iterator, &status);
+	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter_end <= iter_start || iter_end > iterator->size ||
+	    iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		vec_int_insert(ptr, iter + (i - iter_start), iterator->array[i],
+			       &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}

src/lib/char/char.c

@@ -1,877 +0,0 @@
-#include "char.h"
-
-#include <stddef.h>
-
-#include "utils/utils.h"
-
-__attribute__((overloadable)) size_t
-__null_check(const _VecCharInternal* ptr, err_t* status)
-{
-	unsigned int res = 0;
-	if (ptr == nullptr)
-	{
-		status->flags |= ERR_VEC_NULL;
-		return ERR_VEC_NULL;
-	}
-	if (ptr->_internal_arr == nullptr) status->flags |= ERR_BUF_NULL;
-	if (ptr->_internal_size == 0) status->flags |= ERR_SIZE_ZERO;
-	return status->flags;
-}
-
-__attribute__((overloadable)) size_t
-__null_check(const char* ptr, err_t* status)
-{
-	if (ptr == nullptr) status->flags |= ERR_BUF_NULL;
-	return status->flags;
-}
-
-size_t
-__origin_override(err_t* status, char* str)
-{
-	if (status->origin != nullptr)
-	{
-		status->flags |= ERR_ORIGIN_UNALTERABLE;
-		return status->flags;
-	}
-	else if (str == nullptr)
-	{
-		status->flags |= ERR_STR_NULL;
-		return status->flags;
-	}
-	else
-	{
-		status->origin = str;
-		return status->flags;
-	}
-}
-
-void
-_vec_char_print_vec(const _VecCharInternal* ptr, err_t* err)
-{
-	if (__null_check(ptr, err) != 0) return;
-	for (size_t i = 0; i < ptr->_internal_size; i++)
-		printf("%c ", ptr->_internal_arr[i]);
-	printf("\n");
-}
-
-_VecCharInternal
-_vec_char_cpy(const char* src, const size_t src_size, err_t* err)
-{
-	_VecCharInternal self = VEC_INIT;
-	err_t status = ERR_T_INIT;
-
-	if (__null_check(src, &status) != 0)
-	{
-		__origin_override(err, "CPY");
-		err->flags |= status.flags;
-		return self;
-	}
-	if (src_size == 0)
-	{
-		__origin_override(err, "CPY");
-		err->flags |= ERR_SIZE_ZERO;
-		err->flags |= status.flags;
-		return self;
-	}
-	self._internal_arr = malloc(src_size * sizeof(char));
-	__null_check(self._internal_arr, &status);
-	if (status.flags != 0)
-	{
-		__origin_override(err, "CPY");
-		err->flags |= status.flags;
-		free(self._internal_arr);
-		self._internal_arr = NULL;
-		return self;
-	}
-	memcpy(self._internal_arr, src, src_size * sizeof(char));
-	self._internal_size = src_size;
-	self._internal_capacity = src_size;
-	return self;
-}
-
-void
-_vec_char_push_back(_VecCharInternal* ptr, const char val, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	char* res;
-	__null_check(ptr, &status);
-	if ((status.flags & ERR_VEC_NULL) != 0)
-	{
-		__origin_override(err, "PUSH_BACK");
-		err->flags |= ERR_VEC_NULL;
-		return;
-	}
-
-	if (ptr->_internal_size + 1 > ptr->_internal_max_size)
-	{
-		__origin_override(err, "PUSH_BACK");
-		err->flags |= ERR_SIZE_OVERFLOW;
-		return;
-	}
-
-	if ((status.flags & ERR_BUF_NULL) != 0)
-	{
-		res = malloc(1 * sizeof(char));
-		if (res == nullptr)
-		{
-			__origin_override(err, "PUSH_BACK");
-			err->flags |= ERR_BUF_NULL;
-			return;
-		}
-		ptr->_internal_arr = res;
-		ptr->_internal_capacity = 1;
-	}
-
-	else if (ptr->_internal_size + 1 > ptr->_internal_capacity)
-	{
-		size_t dst_cap =
-		    (ptr->_internal_capacity / 2) + ptr->_internal_capacity;
-		if (dst_cap == ptr->_internal_capacity) dst_cap++;
-		if (dst_cap > ptr->_internal_max_size)
-		{
-			dst_cap = ptr->_internal_max_size;
-			DEBUG(
-			    "Capacity cannot be grown any further due "
-			    "to hitting max size");
-		}
-		res = realloc(ptr->_internal_arr, dst_cap * sizeof(char));
-		if (res == nullptr)
-		{
-			__origin_override(err, "PUSH_BACK");
-			err->flags |= ERR_SIZE_OVERFLOW;
-			return;
-		}
-		ptr->_internal_arr = res;
-		ptr->_internal_capacity = dst_cap;
-	}
-	ptr->_internal_arr[ptr->_internal_size] = val;
-	ptr->_internal_size++;
-	return;
-}
-
-void
-_vec_char_pop_back(_VecCharInternal* ptr, err_t* err)
-{
-	if (__null_check(ptr, err) != 0)
-	{
-		__origin_override(err, "POP_BACK");
-		return;
-	}
-
-	ptr->_internal_arr[ptr->_internal_size - 1] = '\0';
-	ptr->_internal_size--;
-}
-
-void
-_vec_char_reserve(_VecCharInternal* ptr, const size_t capacity, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	char* res;
-	if (capacity == 0)
-	{
-		__origin_override(err, "RESERVE");
-		err->flags |= ERR_SIZE_ZERO;
-		return;
-	}
-	if (__null_check(ptr, &status) != 0)
-	{
-		if ((status.flags & ERR_BUF_NULL) != 0)
-		{
-			res = calloc(ptr->_internal_capacity, sizeof(char));
-			if (res == nullptr)
-			{
-				__origin_override(err, "RESERVE");
-				err->flags |= ERR_ALLOC_FAIL;
-				return;
-			}
-		}
-
-		else
-		{
-			__origin_override(err, "RESERVE");
-			err->flags |= (status.flags ^ ERR_BUF_NULL);
-			return;
-		}
-	}
-
-	else
-	{
-		res = realloc(ptr->_internal_arr, capacity * sizeof(char));
-		if (res == nullptr)
-		{
-			__origin_override(err, "RESERVE");
-			err->flags |= ERR_ALLOC_FAIL;
-			return;
-		}
-		if (ptr->_internal_size > capacity)
-		{
-			for (size_t i = capacity; i < ptr->_internal_size; i++)
-			{
-				ptr->_internal_arr[i] = '\0';
-			}
-			ptr->_internal_size = capacity;
-		}
-	}
-	ptr->_internal_arr = res;
-	ptr->_internal_capacity = capacity;
-	ptr->_internal_max_size = capacity;
-	return;
-}
-
-void
-_vec_char_shrink_to_fit(_VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	__null_check(ptr, &status);
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "SHRINK_TO_FIT");
-		err->flags |= status.flags;
-		return;
-	}
-	return _vec_char_reserve(ptr, ptr->_internal_size, err);
-}
-
-void
-_vec_char_swap(_VecCharInternal* ptr1, _VecCharInternal* ptr2, err_t* err)
-{
-	_VecCharInternal self = VEC_INIT;
-	err_t status_1 = ERR_T_INIT, status_2 = ERR_T_INIT;
-	if (__null_check(ptr1, &status_1) != 0 ||
-	    __null_check(ptr2, &status_2) != 0)
-	{
-		__origin_override(err, "SWAP");
-		err->flags |= status_1.flags | status_2.flags;
-		return;
-	}
-	self._internal_arr = ptr1->_internal_arr;
-	ptr1->_internal_arr = ptr2->_internal_arr;
-	ptr2->_internal_arr = self._internal_arr;
-
-	self._internal_capacity = ptr1->_internal_capacity;
-	self._internal_size = ptr1->_internal_size;
-	self._internal_max_size = ptr1->_internal_max_size;
-	ptr1->_internal_capacity = ptr2->_internal_capacity;
-	ptr1->_internal_size = ptr2->_internal_size;
-	ptr1->_internal_max_size = ptr2->_internal_max_size;
-
-	ptr2->_internal_capacity = self._internal_capacity;
-	ptr2->_internal_size = self._internal_size;
-	ptr2->_internal_max_size = self._internal_max_size;
-	return;
-}
-
-char*
-_vec_char_data(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "DATA");
-		err->flags |= status.flags;
-		return nullptr;
-	}
-	return &ptr->_internal_arr[0];
-}
-
-size_t
-_vec_char_capacity(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "CAPACITY");
-		err->flags |= status.flags;
-		return 0;
-	}
-	return ptr->_internal_capacity;
-}
-
-size_t
-_vec_char_max_size(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "MAX_SIZE");
-		err->flags |= status.flags;
-		return 0;
-	}
-	return ptr->_internal_max_size;
-}
-
-void
-_vec_char_delete(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "DELETE");
-		err->flags |= status.flags;
-		return;
-	}
-	free((void*)ptr->_internal_arr);
-}
-
-void
-_vec_char_clear(_VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "CLEAR");
-		err->flags |= status.flags;
-		return;
-	}
-	if (ptr->_internal_size > 0)
-	{
-		for (size_t i = 0; i < ptr->_internal_size; i++)
-		{
-			ptr->_internal_arr[i] = 0;
-		}
-		ptr->_internal_size = 0;
-	}
-}
-
-char
-_vec_char_at(const _VecCharInternal* ptr, const size_t idx, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "AT");
-		err->flags |= status.flags;
-		return status.flags;
-	}
-	if (idx >= ptr->_internal_size)
-	{
-		fprintf(stderr,
-			"At Index: [%zu] is out of bounds for size: [%zu]\n",
-			idx, ptr->_internal_size);
-		return ERR_OUT_OF_BOUNDS;
-	}
-	return ptr->_internal_arr[idx];
-}
-
-size_t
-_vec_char_begin(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "BEGIN");
-		err->flags |= status.flags;
-		return status.flags;
-	}
-	return 0;
-}
-
-size_t
-_vec_char_end(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "END");
-		err->flags |= status.flags;
-		return status.flags;
-	}
-	return (int)(ptr->_internal_size - 1);
-}
-
-char
-_vec_char_front(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "FRONT");
-		err->flags |= status.flags;
-		return status.flags;
-	}
-	return _vec_char_at(ptr, 0, err);
-}
-
-char
-_vec_char_back(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "BACK");
-		err->flags |= status.flags;
-		return status.flags;
-	}
-	return _vec_char_at(ptr, ptr->_internal_size - 1, err);
-}
-
-size_t
-_vec_char_empty(const _VecCharInternal* ptr, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		if ((status.flags & ERR_SIZE_ZERO) != 0)
-		{
-			err->flags ^= ERR_SIZE_ZERO;
-			return SUCCESS;
-		}
-		__origin_override(err, "EMPTY");
-		err->flags |= status.flags;
-		return status.flags;
-	}
-	return status.flags;
-}
-
-// TODO: Fix return value
-__attribute__((overloadable)) void
-_vec_char_erase(_VecCharInternal* ptr, const size_t iter, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "ERASE");
-		err->flags |= status.flags;
-		return;
-	}
-	if (iter >= ptr->_internal_size) return;
-	memmove(&ptr->_internal_arr[iter], &ptr->_internal_arr[iter + 1],
-		(ptr->_internal_size - iter - 1) * sizeof(char));
-	ptr->_internal_arr[ptr->_internal_size - 1] = 0;
-	ptr->_internal_size--;
-	return;
-}
-
-// // TODO: Fix return value
-__attribute__((overloadable)) void
-_vec_char_erase(_VecCharInternal* ptr, const size_t iter_start,
-		const size_t iter_end, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "ERASE");
-		err->flags |= status.flags;
-		return;
-	}
-
-	if (ptr->_internal_size < iter_end || iter_end <= iter_start)
-	{
-		__origin_override(err, "ERASE");
-		err->flags |= ERR_OUT_OF_BOUNDS;
-		return;
-	}
-	size_t diff = iter_end - iter_start;
-	memmove(&ptr->_internal_arr[iter_start], &ptr->_internal_arr[iter_end],
-		(ptr->_internal_size - iter_end) * sizeof(char));
-	for (size_t i = ptr->_internal_size - diff; i < ptr->_internal_size;
-	     i++)
-	{
-		ptr->_internal_arr[i] = 0;
-	}
-	ptr->_internal_size -= diff;
-	return;
-}
-
-__attribute__((overloadable)) void
-_vec_char_resize(_VecCharInternal* ptr, const size_t size, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	__null_check(ptr, &status);
-	if ((status.flags & (ERR_BUF_NULL | ERR_VEC_NULL)) != 0)
-	{
-		__origin_override(err, "RESIZE");
-		err->flags |= ERR_BUF_NULL | ERR_VEC_NULL;
-		return;
-	}
-
-	if (ptr->_internal_size == size)
-	{
-		__origin_override(err, "RESIZE");
-		err->flags |= ERR_OUT_OF_BOUNDS;
-		return;
-	}
-
-	else if (size > ptr->_internal_max_size)
-	{
-		__origin_override(err, "RESIZE");
-		err->flags |= ERR_SIZE_OVERFLOW;
-		return;
-	}
-
-	else if ((status.flags & ERR_SIZE_ZERO) != 0)
-	{
-		size_t max = ptr->_internal_max_size;
-		err_t verr = ERR_T_INIT;
-		_vec_char_reserve(ptr, size, &verr);
-		if (verr.flags != 0)
-		{
-			__origin_override(err, "RESIZE");
-			err->flags |= verr.flags;
-			return;
-		}
-		if (ptr->_internal_capacity != size)
-		{
-			__origin_override(err, "RESIZE");
-			err->flags |= ERR_ALLOC_FAIL;
-			return;
-		}
-		for (size_t i = 0; i < size; i++)
-		{
-			ptr->_internal_arr[i] = '\0';
-		}
-		ptr->_internal_max_size = max;
-		ptr->_internal_size = size;
-		return;
-	}
-	else if (size > ptr->_internal_capacity)
-	{
-		size_t tmpcp = ptr->_internal_capacity;
-		size_t tmpmx = ptr->_internal_max_size;
-		err_t verr = ERR_T_INIT;
-		while (size > tmpcp)
-		{
-			tmpcp *= 2;
-		}
-		if (tmpcp > ptr->_internal_max_size)
-		{
-			tmpcp = size;
-		}
-		_vec_char_reserve(ptr, tmpcp, &verr);
-		if (verr.flags != 0)
-		{
-			__origin_override(err, "RESIZE");
-			err->flags |= verr.flags;
-			return;
-		}
-		if (ptr->_internal_capacity != tmpcp)
-		{
-			__origin_override(err, "RESIZE");
-			err->flags |= ERR_ALLOC_FAIL;
-			return;
-		}
-		ptr->_internal_max_size = tmpmx;
-	}
-	if (size < ptr->_internal_size)
-	{
-		for (size_t i = size; i < ptr->_internal_size; i++)
-		{
-			ptr->_internal_arr[i] = '\0';
-		}
-	}
-	if (ptr->_internal_size < size && size <= ptr->_internal_capacity)
-	{
-		for (size_t i = ptr->_internal_size; i < size; i++)
-		{
-			ptr->_internal_arr[i] = '\0';
-		}
-	}
-	ptr->_internal_size = size;
-	return;
-}
-
-__attribute__((overloadable)) void
-_vec_char_resize(_VecCharInternal* ptr, const size_t size, const char val,
-		 err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	__null_check(ptr, &status);
-	if ((status.flags & (ERR_BUF_NULL | ERR_VEC_NULL)) != 0)
-	{
-		__origin_override(err, "RESIZE");
-		err->flags |= ERR_BUF_NULL | ERR_VEC_NULL;
-		return;
-	}
-	if (ptr->_internal_size == size)
-	{
-		__origin_override(err, "RESIZE");
-		err->flags |= ERR_OUT_OF_BOUNDS;
-		return;
-	}
-
-	else if (size > ptr->_internal_max_size)
-	{
-		__origin_override(err, "RESIZE");
-		err->flags |= ERR_SIZE_OVERFLOW;
-		return;
-	}
-
-	else if ((status.flags & ERR_SIZE_ZERO) != 0)
-	{
-		size_t max = ptr->_internal_max_size;
-		err_t verr = ERR_T_INIT;
-		_vec_char_reserve(ptr, size, &verr);
-		if (verr.flags != 0)
-		{
-			__origin_override(err, "RESIZE");
-			err->flags |= verr.flags;
-			return;
-		}
-		if (ptr->_internal_capacity != size)
-		{
-			__origin_override(err, "RESIZE");
-			err->flags |= ERR_ALLOC_FAIL;
-			return;
-		}
-		for (size_t i = 0; i < size; i++)
-		{
-			ptr->_internal_arr[i] = val;
-		}
-		ptr->_internal_max_size = max;
-		ptr->_internal_size = size;
-		return;
-	}
-	else if (size > ptr->_internal_capacity)
-	{
-		size_t tmpcp = ptr->_internal_capacity;
-		size_t tmpmx = ptr->_internal_max_size;
-		err_t verr = ERR_T_INIT;
-		while (size > tmpcp)
-		{
-			tmpcp *= 2;
-		}
-		if (tmpcp > ptr->_internal_max_size)
-		{
-			tmpcp = size;
-		}
-		_vec_char_reserve(ptr, tmpcp, &verr);
-		if (verr.flags != 0)
-		{
-			__origin_override(err, "RESIZE");
-			err->flags |= verr.flags;
-			return;
-		}
-		ptr->_internal_max_size = tmpmx;
-	}
-	if (size < ptr->_internal_size)
-	{
-		for (size_t i = size; i < ptr->_internal_size; i++)
-		{
-			ptr->_internal_arr[i] = val;
-		}
-	}
-	if (ptr->_internal_size < size && size <= ptr->_internal_capacity)
-	{
-		for (size_t i = ptr->_internal_size; i < size; i++)
-		{
-			ptr->_internal_arr[i] = val;
-		}
-	}
-	ptr->_internal_size = size;
-	return;
-}
-
-__attribute__((overloadable)) void
-_vec_char_assign(_VecCharInternal* ptr, const _VecCharInternal* iterator,
-		 const size_t iter_start, const size_t iter_end, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0 ||
-	    __null_check(iterator, &status) != 0)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= status.flags;
-		return;
-	}
-	if (ptr->_internal_arr == iterator->_internal_arr)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= ERR_DOUBLE_BUF;
-		return;
-	}
-	if (iterator->_internal_size < iter_end || iter_end <= iter_start)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= ERR_OUT_OF_BOUNDS;
-		return;
-	}
-	_vec_char_erase(ptr, _vec_char_begin(ptr, &status),
-			_vec_char_end(ptr, &status) + 1, &status);
-	if (status.flags != 0)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= status.flags;
-		return;
-	}
-	_vec_char_reserve(ptr, (iter_end - iter_start), &status);
-	if (status.flags != 0)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= status.flags;
-		return;
-	}
-	for (size_t i = iter_start; i < iter_end; i++)
-	{
-		_vec_char_push_back(ptr, _vec_char_at(iterator, i, &status),
-				    &status);
-		if (status.flags != 0)
-		{
-			__origin_override(err, "ASSIGN");
-			err->flags |= status.flags;
-			return;
-		}
-	}
-	return;
-}
-
-__attribute__((overloadable)) void
-_vec_char_assign(_VecCharInternal* ptr, const size_t amount, const char val,
-		 err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if (__null_check(ptr, &status) != 0)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= status.flags;
-	}
-	if (amount == 0)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= ERR_SIZE_ZERO;
-		return;
-	}
-	_vec_char_erase(ptr, _vec_char_begin(ptr, &status),
-			_vec_char_end(ptr, &status) + 1, &status);
-	if (status.flags != 0)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= status.flags;
-		return;
-	}
-	_vec_char_reserve(ptr, amount, &status);
-	if (status.flags != 0)
-	{
-		__origin_override(err, "ASSIGN");
-		err->flags |= status.flags;
-		return;
-	}
-	for (size_t i = 0; i < amount; i++)
-	{
-		_vec_char_push_back(ptr, val, &status);
-		if (status.flags != 0)
-		{
-			__origin_override(err, "ASSIGN");
-			err->flags |= status.flags;
-			return;
-		}
-	}
-	return;
-}
-
-__attribute__((overloadable)) void
-_vec_char_insert(_VecCharInternal* ptr, const size_t iter, const char val,
-		 err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	__null_check(ptr, &status);
-	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= status.flags;
-		return;
-	}
-	if (ptr->_internal_max_size < ptr->_internal_size + 1)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= ERR_SIZE_OVERFLOW;
-		return;
-	}
-	if (iter > ptr->_internal_size)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= ERR_OUT_OF_BOUNDS;
-		return;
-	}
-	_vec_char_push_back(ptr, 0, &status);
-	if (status.flags != 0)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= status.flags;
-		return;
-	}
-	for (size_t i = ptr->_internal_size - 1; i > iter; i--)
-	{
-		ptr->_internal_arr[i] = ptr->_internal_arr[i - 1];
-	}
-	ptr->_internal_arr[iter] = val;
-
-	return;
-}
-
-__attribute__((overloadable)) void
-_vec_char_insert(_VecCharInternal* ptr, const size_t iter, const size_t amount,
-		 const char val, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= status.flags;
-		return;
-	}
-	if (iter > ptr->_internal_size)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= ERR_OUT_OF_BOUNDS;
-		return;
-	}
-	if (amount <= 0)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= ERR_SIZE_ZERO;
-		return;
-	}
-	for (size_t i = iter; i < iter + amount; i++)
-	{
-		_vec_char_insert(ptr, i, val, &status);
-		if (status.flags != 0)
-		{
-			__origin_override(err, "INSERT");
-			err->flags |= status.flags;
-			return;
-		}
-	}
-	return;
-}
-
-__attribute__((overloadable)) void
-_vec_char_insert(_VecCharInternal* ptr, const _VecCharInternal* iterator,
-		 const size_t iter, const size_t iter_start,
-		 const size_t iter_end, err_t* err)
-{
-	err_t status = ERR_T_INIT;
-	__null_check(ptr, &status);
-	__null_check(iterator, &status);
-	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
-
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= status.flags;
-		return;
-	}
-	if (iter_end > iter_start || iter_end > iterator->_internal_size ||
-	    iter > ptr->_internal_size)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= ERR_OUT_OF_BOUNDS;
-		return;
-	}
-	if (ptr->_internal_arr == iterator->_internal_arr)
-	{
-		__origin_override(err, "INSERT");
-		err->flags |= ERR_DOUBLE_BUF;
-		return;
-	}
-	for (size_t i = iter_start; i < iter_end; i++)
-	{
-		_vec_char_insert(ptr, iter + (i - iter_start),
-				 iterator->_internal_arr[i], &status);
-		if (status.flags != 0)
-		{
-			__origin_override(err, "INSERT");
-			err->flags |= status.flags;
-			return;
-		}
-	}
-	return;
-}

src/lib/char/char.h

@@ -1,108 +0,0 @@
-#ifndef CHAR_H
-#define CHAR_H
-
-#include <stddef.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <utils/utils.h>
-
-typedef struct
-{
-	char* _internal_arr;
-	size_t _internal_size;
-	size_t _internal_capacity;
-	size_t _internal_max_size;
-} _VecCharInternal;
-
-void
-_vec_char_print_vec(const _VecCharInternal* ptr, err_t* err);
-
-_VecCharInternal
-_vec_char_cpy(const char* src, const size_t src_size, err_t* err);
-
-void
-_vec_char_push_back(_VecCharInternal* ptr, const char val, err_t* err);
-
-void
-_vec_char_pop_back(_VecCharInternal* ptr, err_t* err);
-
-void
-_vec_char_reserve(_VecCharInternal* ptr, const size_t capacity, err_t* err);
-
-void
-_vec_char_shrink_to_fit(_VecCharInternal* ptr, err_t* err);
-
-void
-_vec_char_swap(_VecCharInternal* ptr, _VecCharInternal* ptr_other, err_t* err);
-
-char*
-_vec_char_data(const _VecCharInternal* ptr, err_t* err);
-
-size_t
-_vec_char_capacity(const _VecCharInternal* ptr, err_t* err);
-
-size_t
-_vec_char_max_size(const _VecCharInternal* ptr, err_t* err);
-
-void
-_vec_char_delete(const _VecCharInternal* ptr, err_t* err);
-
-void
-_vec_char_clear(_VecCharInternal* ptr, err_t* err);
-
-char
-_vec_char_at(const _VecCharInternal* ptr, const size_t idx, err_t* err);
-
-size_t
-_vec_char_begin(const _VecCharInternal* ptr, err_t* err);
-
-size_t
-_vec_char_end(const _VecCharInternal* ptr, err_t* err);
-
-char
-_vec_char_front(const _VecCharInternal* ptr, err_t* err);
-
-char
-_vec_char_back(const _VecCharInternal* ptr, err_t* err);
-
-size_t
-_vec_char_empty(const _VecCharInternal* ptr, err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_erase(_VecCharInternal* ptr, const size_t iter, err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_erase(_VecCharInternal* ptr, const size_t iter_start,
-		const size_t iter_end, err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_resize(_VecCharInternal* ptr, const size_t size, err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_resize(_VecCharInternal* ptr, const size_t size, const char val,
-		 err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_assign(_VecCharInternal* ptr, const _VecCharInternal* iterator,
-		 const size_t iter_start, const size_t iter_end, err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_assign(_VecCharInternal* ptr, const size_t amount, const char val,
-		 err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_insert(_VecCharInternal* ptr, const size_t iter, const char val,
-		 err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_insert(_VecCharInternal* ptr, const size_t iter, const size_t amount,
-		 const char val, err_t* err);
-
-__attribute__((overloadable)) void
-_vec_char_insert(_VecCharInternal* ptr, const _VecCharInternal* iterator,
-		 const size_t iter, const size_t iter_start,
-		 const size_t iter_end, err_t* err);
-
-#endif

src/lib/utils/utils.c

@@ -1,71 +0,0 @@
-#include <stdio.h>
-#include <utils/utils.h>
-
-const char*
-vec_get_error_desc(ERROR_CODES err)
-{
-	switch (err)
-	{
-#define X(name, val, desc) \
-	case name:         \
-		return desc;
-		ERROR_LIST(X)
-#undef X
-		default:
-			"Unknown";
-	}
-}
-
-void
-vec_print_errs(const err_t err)
-{
-	if (err.flags == SUCCESS)
-	{
-		printf("%s: %s\n", err.origin, vec_get_error_desc(SUCCESS));
-		return;
-	}
-	{
-#define X(name, val, desc)                                \
-	if ((val) != 0 && ((err.flags) & (val)))          \
-	{                                                 \
-		printf("%s\n", vec_get_error_desc(name)); \
-	}
-		ERROR_LIST(X)
-#undef X
-	}
-}
-
-void
-print_bits(unsigned int num)
-{
-	// Determine the number of bits in an unsigned int (usually 32)
-	int total_bits = sizeof(num) * 8;
-
-	// Loop from the most significant bit (MSB) down to the least
-	// significant bit (LSB)
-	for (int i = total_bits - 1; i >= 0; i--)
-	{
-		// Shift a 1 to the i-th position and check if that bit is set
-		int bit = (num >> i) & 1;
-		printf("%d", bit);
-
-		// Optional: Add a space every 4 or 8 bits for readability
-		if (i % 8 == 0)
-		{
-			printf(" ");
-		}
-	}
-	printf("\n");
-}
-
-// void
-// _vec_update_origin(err_t* err, char* str)
-// {
-// 	err_t res;
-// 	if (err == nullptr)
-// 	{
-// 		res.err = 0;
-// 		res.value = 0;
-// 	}
-// 	if (!err->origin) err->origin = str;
-// }

src/libvec.c

@@ -1 +0,0 @@
-#include <libvec.h>

src/main.c

@@ -6,21 +6,15 @@
  */
 /*
  * Types Wanted:
- *      Char 8 Bits
- *      Float 32 Bits with suffix of 'f'
- *      Int 32 bits
  *      String 32 Bits with suffix of 's'
  */
 
-// #include <libvec.h>
+#include <libvec/utils.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include "lib/char/char.h"
-#include "lib/utils/utils.h"
-
 void
 print_bits(unsigned int num);
 
@@ -28,6 +22,7 @@ int
 main()
 {
 	// TODO:
+	//
 	// Fix the error checking because you make a status to hold all local
 	// errors but then in some cases you or them to the main err handler and
 	// if the error doesnt need to be there like a good error but one that
@@ -36,70 +31,15 @@ main()
 	//
 	// Your pop back is a great example of how to handle it and is a clean
 	// if statement as a header to all functions.
-	char res[4] = { 'a', 'b', 'c', 'd' };
-	err_t status = ERR_T_INIT, err = ERR_T_INIT;
+	// char res[4] = { 'a', 'b', 'c', 'd' };
+	err_t status = ERR_T_INIT;
 	status.flags |= ERR_BUF_NULL | ERR_VEC_NULL | ERR_STR_NULL;
-	// _VecCharInternal v1 = VEC_INIT;
-	// _vec_char_push_back(&v1, 'c', &status);
-	// _vec_char_print_vec(&v1, &status);
 
 	unsigned int mask = 0;
 	mask = ERR_BUF_NULL ^ status.flags;
 
-	print_bits(mask);
-	print_bits(status.flags);
-
-	// if (status.origin)
-	// {
-	// 	printf("Error started in: %s\n", status.origin);
-	// }
-	// printf("%s: %s", err.origin, vec_print_errs(err));
-	// vec_print_errs(status);
-	// printf("%u\n", status.err);
-	// _vec_update_origin(&err, "Test");
-	// printf("%s", err.origin);
-	// for (int i = 0; i < VEC_FAULT_BITS; i++)
-	// {
-	// 	print_bits(mark);
-	// 	mark <<= 1;
-	// }
-	// const char* str = vec_get_error_desc(ERR_ALLOC_FAIL);
-	// const unsigned int error = ERR_BUF_NULL;
-	// if (!(ERR_ALLOC_FAIL & SUCCESS))
-	// {
-	// 	printf("Hello\n");
-	// }
-	// printf("%s", str);
-	// char ar1[] = { '1', '2', '3', '4' };
-	// char ar2[] = { 'a', 'b', 'c', 'd' };
-	// Vec8_t v1 = create(ar2, find_len(ar2));
-	// v1 = reserve(&v1, 9);
-	// print_vec(&v1);
-	// v1 = insert(&v1, 1, 'x');
-	// v1 = resize(&v1, 12);
-	// print_vec(&v1);
-	// v2 = resize(&v2, 3);
-
-	// print_vec(&v2);
-
-	// if (swap(&v1, &v2))
-	// {
-	// 	print_vec(&v1);
-	// 	print_vec(&v2);
-	// }
-	// Vec8_t v1 = create(nullptr, 0);
-	// v1 = reserve(&v1, 10);
-	// v1 = pop_back(&v1);
-	// for (int i = 0; i < 10; i++)
-	// {
-	// 	v1 = push_back(&v1, 'a');
-	// }
-	// print_vec(&v1);
-	// printf("SIZE: %zu\n", v1.size);
-	// v1 = push_back(&v1, 'a');
-	// print_vec(&v1);
-	// printf("SIZE: %zu\n", v1.size);
-	// delete(&v1);
-	// delete(&v2);
+	vec_print_bits(mask);
+	vec_print_bits(status.flags);
+	vec_print_errs(status);
 	return 0;
 }

src/string.c

@@ -0,0 +1,938 @@
+#include "libstr/string.h"
+
+#include <libvec/string.h>
+#include <libvec/utils.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+__attribute__((overloadable)) size_t
+__null_check(const vec_string* ptr, err_t* status)
+{
+	if (status == nullptr)
+	{
+		return ERR_ERR_T_NULL;
+	}
+	if (ptr == nullptr)
+	{
+		status->flags |= ERR_VEC_NULL;
+		return ERR_VEC_NULL;
+	}
+	if (ptr->array == nullptr)
+	{
+		status->flags |= ERR_BUF_NULL;
+	}
+
+	return status->flags;
+}
+
+__attribute__((overloadable)) size_t
+__null_check(const String* ptr, err_t* status)
+{
+	if (status == nullptr)
+	{
+		return ERR_ERR_T_NULL;
+	}
+	if (ptr == nullptr)
+	{
+		status->flags |= ERR_STR_NULL;
+		return status->flags;
+	}
+	if (ptr->data == nullptr)
+	{
+		status->flags |= ERR_BUF_NULL;
+	}
+	return status->flags;
+}
+
+void
+vec_string_print_vec(const vec_string* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		return;
+	}
+	for (size_t i = 0; i < ptr->size; i++)
+	{
+		printf("%s ", ptr->array[i].data);
+	}
+	printf("\n");
+}
+
+vec_string
+vec_string_cpy(const String* src, const size_t src_size, err_t* err)
+{
+	vec_string self = VEC_INIT;
+	err_t status = ERR_T_INIT;
+
+	size_t null = __null_check(src, err);
+	if (null != 0)
+	{
+		if (null & ERR_ERR_T_NULL)
+		{
+			return self;
+		}
+		__origin_override(err, "CPY");
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size == 0)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_ZERO;
+		err->flags |= status.flags;
+		return self;
+	}
+	if (src_size > self.max_size)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return self;
+	}
+	self.array = malloc(src_size * sizeof(String));
+	if (self.array == nullptr)
+	{
+		__origin_override(err, "CPY");
+		err->flags |= ERR_ALLOC_FAIL;
+		return self;
+	}
+	memcpy(self.array, src, src_size * sizeof(String));
+	self.size = src_size;
+	self.capacity = src_size;
+	return self;
+}
+
+void
+vec_string_push_back(vec_string* ptr, const String val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	String* res;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size + 1 > ptr->max_size)
+	{
+		__origin_override(err, "PUSH_BACK");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		res = malloc(1 * sizeof(String));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->size = 0;
+	}
+
+	else if (ptr->size + 1 > ptr->capacity)
+	{
+		size_t dst_cap = (ptr->capacity / 2) + ptr->capacity;
+		if (dst_cap == ptr->capacity)
+		{
+			dst_cap++;
+		}
+		if (dst_cap > ptr->max_size)
+		{
+			dst_cap = ptr->max_size;
+			DEBUG(
+			    "Capacity cannot be grown any further due "
+			    "to hitting max size");
+		}
+		res = realloc(ptr->array, dst_cap * sizeof(String));
+		if (res == nullptr)
+		{
+			__origin_override(err, "PUSH_BACK");
+			err->flags |= ERR_SIZE_OVERFLOW;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = dst_cap;
+	}
+	ptr->array[ptr->size] = val;
+	ptr->size++;
+	return;
+}
+
+void
+vec_string_pop_back(vec_string* ptr, err_t* err)
+{
+	if (__null_check(ptr, err) != 0)
+	{
+		__origin_override(err, "POP_BACK");
+		return;
+	}
+
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "POP_BACK");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	ptr->array[ptr->size - 1] = (String)STR_INIT;
+	ptr->size--;
+}
+
+void
+vec_string_reserve(vec_string* ptr, const size_t capacity, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		if ((status.flags & ERR_VEC_NULL) != 0)
+		{
+			__origin_override(err, "RESERVE");
+			err->flags |= ERR_VEC_NULL;
+			return;
+		}
+	}
+	if (ptr->max_size < capacity)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (capacity == 0)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+
+	String* res = realloc(ptr->array, capacity * sizeof(String));
+	if (res == nullptr)
+	{
+		__origin_override(err, "RESERVE");
+		err->flags |= ERR_ALLOC_FAIL;
+		return;
+	}
+	ptr->array = res;
+	ptr->capacity = capacity;
+	if (ptr->size > capacity)
+	{
+		ptr->size = capacity;
+	}
+	return;
+}
+
+void
+vec_string_shrink_to_fit(vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "SHRINK_TO_FIT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	vec_string_reserve(ptr, ptr->size, err);
+}
+
+void
+vec_string_swap(vec_string* ptr_a, vec_string* ptr_b, err_t* err)
+{
+	err_t status_1 = ERR_T_INIT, status_2 = ERR_T_INIT;
+	if ((__null_check(ptr_a, &status_1) & ERR_VEC_NULL) != 0 ||
+	    (__null_check(ptr_b, &status_2) & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "SWAP");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	vec_string self = *ptr_a;
+	*ptr_a = *ptr_b;
+	*ptr_b = self;
+	return;
+}
+
+const String*
+vec_string_data(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DATA");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	return &ptr->array[0];
+}
+
+size_t
+vec_string_size(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->size;
+}
+
+size_t
+vec_string_capacity(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CAPACITY");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->capacity;
+}
+
+size_t
+vec_string_max_size(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "MAX_SIZE");
+		err->flags |= status.flags;
+		return 0;
+	}
+	return ptr->max_size;
+}
+
+void
+vec_string_delete(vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "DELETE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array != nullptr)
+	{
+		free(ptr->array);
+		ptr->array = nullptr;
+	}
+	ptr->size = 0;
+	ptr->capacity = 0;
+}
+
+void
+vec_string_clear(vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "CLEAR");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->size > 0)
+	{
+		memset(ptr->array, 0, ptr->size * (sizeof(String)));
+		ptr->size = 0;
+	}
+}
+
+String*
+vec_string_at(const vec_string* ptr, const size_t idx, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "AT");
+		err->flags |= status.flags;
+		return nullptr;
+	}
+	if (idx >= ptr->size)
+	{
+		__origin_override(err, "AT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return nullptr;
+	}
+	return &ptr->array[idx];
+}
+
+size_t
+vec_string_begin(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BEGIN");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	return 0;
+}
+
+size_t
+vec_string_end(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		__origin_override(err, "END");
+		err->flags |= ERR_SIZE_ZERO;
+		return status.flags;
+	}
+	return (size_t)(ptr->size - 1);
+}
+
+String
+vec_string_front(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	String tmp = STR_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "FRONT");
+		err->flags |= status.flags;
+		return tmp;
+	}
+	if (vec_string_at(ptr, 0, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return tmp;
+	}
+	return *vec_string_at(ptr, 0, err);
+}
+
+String
+vec_string_back(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "BACK");
+		err->flags |= status.flags;
+		return (String)STR_INIT;
+	}
+	if (vec_string_at(ptr, ptr->size - 1, err) == nullptr)
+	{
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return (String)STR_INIT;
+	}
+	return *vec_string_at(ptr, ptr->size - 1, err);
+}
+
+size_t
+vec_string_empty(const vec_string* ptr, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "EMPTY");
+		err->flags |= status.flags;
+		return status.flags;
+	}
+	if (ptr->size == 0)
+	{
+		return 1;
+	}
+	return 0;
+}
+
+__attribute__((overloadable)) void
+vec_string_erase(vec_string* ptr, const size_t iter, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter >= ptr->size)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	memmove(&ptr->array[iter], &ptr->array[iter + 1],
+		(ptr->size - iter - 1) * sizeof(String));
+	ptr->array[ptr->size - 1] = (String)STR_INIT;
+	ptr->size--;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_erase(vec_string* ptr, const size_t iter_start,
+		 const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= status.flags;
+		return;
+	}
+
+	if (ptr->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ERASE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	size_t diff = iter_end - iter_start;
+	memmove(&ptr->array[iter_start], &ptr->array[iter_end],
+		(ptr->size - iter_end) * sizeof(String));
+	memset(&ptr->array[ptr->size - diff], 0, sizeof(String) * diff);
+	ptr->size -= diff;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_resize(vec_string* ptr, const size_t size, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_string_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		for (size_t i = 0; i < size; i++)
+		{
+			ptr->array[i] = (String)STR_INIT;
+		}
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_string_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != tmpcp)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		for (size_t i = size; i < ptr->size; i++)
+		{
+			ptr->array[i] = (String)STR_INIT;
+		}
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		for (size_t i = ptr->size; i < size; i++)
+		{
+			ptr->array[i] = (String)STR_INIT;
+		}
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_resize(vec_string* ptr, const size_t size, const String val,
+		  err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_VEC_NULL;
+		return;
+	}
+	if (ptr->size == size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	else if (size > ptr->max_size)
+	{
+		__origin_override(err, "RESIZE");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+
+	else if ((status.flags & ERR_BUF_NULL) != 0 || ptr->size == 0)
+	{
+		size_t max = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		vec_string_reserve(ptr, size, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		if (ptr->capacity != size)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= ERR_ALLOC_FAIL;
+			return;
+		}
+		for (size_t i = 0; i < size; i++)
+		{
+			ptr->array[i] = val;
+		}
+		ptr->max_size = max;
+		ptr->size = size;
+		return;
+	}
+	else if (size > ptr->capacity)
+	{
+		size_t tmpcp = ptr->capacity;
+		size_t tmpmx = ptr->max_size;
+		err_t verr = ERR_T_INIT;
+		while (size > tmpcp)
+		{
+			tmpcp *= 2;
+		}
+		if (tmpcp > ptr->max_size)
+		{
+			tmpcp = size;
+		}
+		vec_string_reserve(ptr, tmpcp, &verr);
+		if (verr.flags != 0)
+		{
+			__origin_override(err, "RESIZE");
+			err->flags |= verr.flags;
+			return;
+		}
+		ptr->max_size = tmpmx;
+	}
+	if (size < ptr->size)
+	{
+		for (size_t i = size; i < ptr->size; i++)
+		{
+			ptr->array[i] = val;
+		}
+	}
+	if (ptr->size < size && size <= ptr->capacity)
+	{
+		for (size_t i = ptr->size; i < size; i++)
+		{
+			ptr->array[i] = val;
+		}
+	}
+	ptr->size = size;
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_assign(vec_string* ptr, const vec_string* iterator,
+		  const size_t iter_start, const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0 ||
+	    __null_check(iterator, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	if (iterator->size < iter_end || iter_end <= iter_start)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (ptr->size > 0)
+	{
+		vec_string_erase(ptr, 0, ptr->size, &status);
+	}
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_string_reserve(ptr, (iter_end - iter_start), &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		String* res = vec_string_at(iterator, i, &status);
+		if (res == nullptr)
+		{
+			err->flags |= ERR_OUT_OF_BOUNDS;
+			return;
+		}
+		vec_string_push_back(ptr, *res, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_assign(vec_string* ptr, const size_t amount, const String val,
+		  err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	if (__null_check(ptr, &status) != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	if (ptr->size > 0)
+	{
+		vec_string_erase(ptr, vec_string_begin(ptr, &status),
+				 vec_string_end(ptr, &status) + 1, &status);
+	}
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	vec_string_reserve(ptr, amount, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "ASSIGN");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = 0; i < amount; i++)
+	{
+		vec_string_push_back(ptr, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "ASSIGN");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_insert(vec_string* ptr, const size_t iter, const String val,
+		  err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if ((status.flags & ERR_BUF_NULL) != 0)
+	{
+		String* res = malloc(1 * sizeof(String));
+		if (res == nullptr)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= ERR_BUF_NULL;
+			return;
+		}
+		ptr->array = res;
+		ptr->capacity = 1;
+		ptr->array[0] = val;
+		ptr->size = 1;
+		return;
+	}
+	if (ptr->max_size < ptr->size + 1)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_OVERFLOW;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+
+	String empty = STR_INIT;
+	vec_string_push_back(ptr, empty, &status);
+	if (status.flags != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	for (size_t i = ptr->size - 1; i > iter; i--)
+	{
+		ptr->array[i] = ptr->array[i - 1];
+	}
+	ptr->array[iter] = val;
+
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_insert(vec_string* ptr, const size_t iter, const size_t amount,
+		  const String val, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	if ((status.flags & ERR_VEC_NULL) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (amount == 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_SIZE_ZERO;
+		return;
+	}
+	for (size_t i = iter; i < iter + amount; i++)
+	{
+		vec_string_insert(ptr, i, val, &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}
+
+__attribute__((overloadable)) void
+vec_string_insert(vec_string* ptr, const vec_string* iterator,
+		  const size_t iter, const size_t iter_start,
+		  const size_t iter_end, err_t* err)
+{
+	err_t status = ERR_T_INIT;
+	__null_check(ptr, &status);
+	__null_check(iterator, &status);
+	if ((status.flags & (ERR_VEC_NULL | ERR_BUF_NULL)) != 0)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= status.flags;
+		return;
+	}
+	if (iter_end <= iter_start || iter_end > iterator->size ||
+	    iter > ptr->size)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_OUT_OF_BOUNDS;
+		return;
+	}
+	if (ptr->array == iterator->array)
+	{
+		__origin_override(err, "INSERT");
+		err->flags |= ERR_DOUBLE_BUF;
+		return;
+	}
+	for (size_t i = iter_start; i < iter_end; i++)
+	{
+		vec_string_insert(ptr, iter + (i - iter_start),
+				  iterator->array[i], &status);
+		if (status.flags != 0)
+		{
+			__origin_override(err, "INSERT");
+			err->flags |= status.flags;
+			return;
+		}
+	}
+	return;
+}

src/utils.c

@@ -0,0 +1,92 @@
+#include <libvec/utils.h>
+#include <stdio.h>
+
+const char*
+vec_get_error_desc(ERROR_CODES err)
+{
+	switch (err)
+	{
+#define X(name, val, desc) \
+	case name:         \
+		return desc;
+		ERROR_LIST(X)
+#undef X
+		default:
+			return "Unknown";
+	}
+}
+
+void
+vec_print_errs(const err_t err)
+{
+	if (err.flags == SUCCESS)
+	{
+		printf("%s: %s\n", err.origin, vec_get_error_desc(SUCCESS));
+		return;
+	}
+	{
+#define X(name, val, desc)                                \
+	if ((val) != 0 && ((err.flags) & (val)))          \
+	{                                                 \
+		printf("%s\n", vec_get_error_desc(name)); \
+	}
+		ERROR_LIST(X)
+#undef X
+	}
+}
+
+void
+vec_print_bits(unsigned int num)
+{
+	unsigned int total_bits = sizeof(num) * 8;
+
+	for (unsigned int i = total_bits - 1; i >= 0; i--)
+	{
+		unsigned int bit = (num >> i) & 1;
+		printf("%d ", bit);
+
+		if (i % 8 == 0)
+		{
+			printf(" ");
+		}
+	}
+	printf("\n");
+}
+
+size_t
+__origin_override(err_t* status, char* str)
+{
+	if (status == nullptr)
+	{
+		return ERR_ERR_T_NULL;
+	}
+	if (status->origin != nullptr)
+	{
+		status->flags |= ERR_ORIGIN_UNALTERABLE;
+		return status->flags;
+	}
+	else if (str == nullptr)
+	{
+		status->flags |= ERR_STR_NULL;
+		return status->flags;
+	}
+	else
+	{
+		status->origin = str;
+		return status->flags;
+	}
+}
+
+__attribute__((overloadable)) size_t
+__null_check(const char* ptr, err_t* status)
+{
+	if (status == nullptr)
+	{
+		return ERR_ERR_T_NULL;
+	}
+	if (ptr == nullptr)
+	{
+		status->flags |= ERR_BUF_NULL;
+	}
+	return status->flags;
+}

tests/fuzz_char.c

@@ -0,0 +1,46 @@
+#include <stddef.h>
+#include <stdint.h>
+
+#include "char/char.h"
+#include "utils/utils.h"
+
+int
+LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+	if (size < 2) return 0;
+
+	err_t err = ERR_T_INIT;
+	_VecCharInternal vec = VEC_INIT;
+
+	// Use input bytes to drive arbitrary vector operations
+	for (size_t i = 0; i < size; i++)
+	{
+		uint8_t op = data[i] % 5;
+		switch (op)
+		{
+			case 0:
+				_vec_char_push_back(&vec, (char)data[i], &err);
+				break;
+			case 1:
+				_vec_char_pop_back(&vec, &err);
+				break;
+			case 2:
+				if (vec._internal_size > 0)
+				{
+					size_t idx = (size_t)data[i] %
+						     vec._internal_size;
+					_vec_char_erase(&vec, idx, &err);
+				}
+				break;
+			case 3:
+				_vec_char_reserve(&vec, (size_t)data[i], &err);
+				break;
+			case 4:
+				_vec_char_shrink_to_fit(&vec, &err);
+				break;
+		}
+	}
+
+	_vec_char_delete(&vec, &err);
+	return 0;
+}

tests/test_char.c

@@ -0,0 +1,104 @@
+#include <assert.h>
+#include <stdio.h>
+
+#include "char/char.h"
+#include "utils/utils.h"
+
+static void
+test_empty_vector_underflows(void)
+{
+	printf("[RUN] Testing empty vector boundaries & underflows...\n");
+	err_t err = ERR_T_INIT;
+	_VecCharInternal vec = VEC_INIT;
+
+	// 1. Pop back on an empty container must not underflow size_t (0 - 1)
+	_vec_char_pop_back(&vec, &err);
+	assert((err.flags & ERR_SIZE_ZERO) != 0 || err.flags != 0);
+
+	// 2. Reading back/end of an empty container
+	err = (err_t)ERR_T_INIT;
+	_vec_char_back(&vec, &err);
+	assert(err.flags != 0);
+
+	// 3. Reserving 0 capacity
+	err = (err_t)ERR_T_INIT;
+	_vec_char_reserve(&vec, 0, &err);
+	assert((err.flags & ERR_SIZE_ZERO) != 0);
+
+	_vec_char_delete(&vec, &err);
+	printf("[PASS] Empty vector boundaries handled.\n");
+}
+
+static void
+test_push_growth_and_shrink(void)
+{
+	printf("[RUN] Testing push, capacity growth, and indexing...\n");
+	err_t err = ERR_T_INIT;
+	_VecCharInternal vec = VEC_INIT;
+
+	// Push elements to trigger initial malloc then realloc
+	for (char c = 'a'; c <= 'z'; c++)
+	{
+		_vec_char_push_back(&vec, c, &err);
+		assert(err.flags == 0);
+	}
+	assert(vec._internal_size == 26);
+	assert(vec._internal_capacity >= 26);
+
+	// Verify boundary indexing
+	assert(_vec_char_front(&vec, &err) == 'a');
+	assert(_vec_char_back(&vec, &err) == 'z');
+
+	// Index out of bounds check
+	err = (err_t)ERR_T_INIT;
+	_vec_char_at(&vec, 26, &err);
+	assert(err.flags != 0);
+
+	// Shrink to fit verification
+	err = (err_t)ERR_T_INIT;
+	_vec_char_shrink_to_fit(&vec, &err);
+	assert(vec._internal_capacity == 26);
+
+	_vec_char_delete(&vec, &err);
+	printf("[PASS] Growth and indexing passed.\n");
+}
+
+static void
+test_range_insert_and_erase(void)
+{
+	printf("[RUN] Testing range insertions and erasures...\n");
+	err_t err = ERR_T_INIT;
+	_VecCharInternal vec = VEC_INIT;
+
+	_vec_char_push_back(&vec, 'A', &err);
+	_vec_char_push_back(&vec, 'B', &err);
+	_vec_char_push_back(&vec, 'E', &err);
+
+	// Single insert between 'B' and 'E' at index 2
+	_vec_char_insert(&vec, 2, 'C', &err);
+	assert(vec._internal_size == 4);
+	assert(*_vec_char_at(&vec, 2, &err) == 'C');
+
+	// Erase test
+	_vec_char_erase(&vec, 2, &err);
+	assert(vec._internal_size == 3);
+	assert(*_vec_char_at(&vec, 2, &err) == 'E');
+
+	// Inverted range check: iter_end <= iter_start must report error
+	err = (err_t)ERR_T_INIT;
+	_vec_char_erase(&vec, 2, 1, &err);
+	assert(err.flags != 0);
+
+	_vec_char_delete(&vec, &err);
+	printf("[PASS] Range insert and erase passed.\n");
+}
+
+int
+main(void)
+{
+	test_empty_vector_underflows();
+	test_push_growth_and_shrink();
+	test_range_insert_and_erase();
+	printf("\nAll char vector edge-case tests passed cleanly!\n");
+	return 0;
+}

tests/test_learn.c

@@ -0,0 +1,689 @@
+#include <assert.h>
+#include <int/int.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <utils/utils.h>
+
+#if defined(__has_feature)
+#if __has_feature(address_sanitizer)
+const char*
+__asan_default_options(void)
+{
+	return "allocator_may_return_null=1";
+}
+#endif
+#endif
+
+/* =========================================================================
+ * 1. BASIC LIFECYCLE & NULL GUARDS
+ * ========================================================================= */
+
+static void
+test_push_back_single(void)
+{
+	printf("[1] Testing push_back with a single integer...\n");
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+	_vec_int_push_back(&vec, 65, &err);
+
+	assert(err.flags == 0);
+	assert(vec._internal_size == 1);
+	assert(vec._internal_arr[0] == 65);
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+static void
+test_null_guards(void)
+{
+	printf("[2] Testing null pointer checks in __null_check...\n");
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	size_t res1 = __null_check(&vec, nullptr);
+	assert(res1 == ERR_ERR_T_NULL);
+
+	size_t res2 = __null_check((const _VecIntInternal*)nullptr, &err);
+	assert(res2 == ERR_VEC_NULL);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	size_t res3 = __null_check(&vec, &err);
+	assert(res3 == ERR_BUF_NULL);
+	assert((err.flags & ERR_BUF_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	size_t res4 = __null_check(vec._internal_arr, &err);
+	assert(res4 == ERR_BUF_NULL);
+	assert((err.flags & ERR_BUF_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	size_t res5 = __null_check((const int*)nullptr, nullptr);
+	assert(res5 == ERR_ERR_T_NULL);
+
+	printf("Passed\n");
+}
+
+static void
+test_origin_override(void)
+{
+	printf("[3] Testing __origin_override...\n");
+	err_t err = ERR_T_INIT;
+
+	size_t res_null_status = __origin_override(nullptr, "TEST");
+	assert(res_null_status == ERR_ERR_T_NULL);
+
+	size_t res = __origin_override(&err, nullptr);
+	assert(res == ERR_STR_NULL);
+	assert((err.flags & ERR_STR_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	__origin_override(&err, "INITIAL");
+	assert(strcmp(err.origin, "INITIAL") == 0);
+
+	// Override existing origin -> ERR_ORIGIN_UNALTERABLE
+	__origin_override(&err, "REPLACED");
+	assert((err.flags & ERR_ORIGIN_UNALTERABLE) != 0);
+	assert(strcmp(err.origin, "INITIAL") == 0);
+
+	printf("Passed\n");
+}
+
+/* =========================================================================
+ * 2. PRINT & COPY
+ * ========================================================================= */
+
+static void
+test_print_vec(void)
+{
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	printf("[4] Testing print_vec with null vector\n");
+	_vec_int_print_vec(nullptr, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+	printf("Passed\n");
+
+	printf("[5] Testing print_vec with null array\n");
+	err = (err_t)ERR_T_INIT;
+	_vec_int_print_vec(&vec, &err);
+	assert((err.flags & ERR_BUF_NULL) != 0);
+	printf("Passed\n");
+
+	printf("[6] Testing print_vec with null err\n");
+	_vec_int_print_vec(&vec, nullptr);
+	printf("Passed\n");
+
+	printf("[7] Testing print_vec with valid parameters\n");
+	err = (err_t)ERR_T_INIT;
+	_vec_int_push_back(&vec, 1, &err);
+	_vec_int_push_back(&vec, 2, &err);
+	_vec_int_print_vec(&vec, &err);
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+static void
+test_cpy(void)
+{
+	int arr[3] = { 1, 2, 3 };
+	_VecIntInternal blank = VEC_INIT;
+
+	printf("[8] Testing _vec_int_cpy with null source arr\n");
+	err_t err1 = ERR_T_INIT;
+	_VecIntInternal tmp = _vec_int_cpy(nullptr, 3, &err1);
+	assert(blank._internal_arr == tmp._internal_arr &&
+	       blank._internal_capacity == tmp._internal_capacity &&
+	       blank._internal_size == tmp._internal_size &&
+	       blank._internal_max_size == tmp._internal_max_size);
+	assert((err1.flags & ERR_BUF_NULL) != 0);
+	printf("Passed\n");
+
+	printf("[9] Testing _vec_int_cpy with null err\n");
+	_VecIntInternal res2 = _vec_int_cpy(arr, 3, nullptr);
+	assert(blank._internal_arr == res2._internal_arr &&
+	       blank._internal_capacity == res2._internal_capacity &&
+	       blank._internal_size == res2._internal_size &&
+	       blank._internal_max_size == res2._internal_max_size);
+	printf("Passed\n");
+
+	printf("[10] Testing _vec_int_cpy with size 0\n");
+	err_t err3 = ERR_T_INIT;
+	_VecIntInternal res3 = _vec_int_cpy(arr, 0, &err3);
+	assert(blank._internal_arr == res3._internal_arr &&
+	       blank._internal_capacity == res3._internal_capacity &&
+	       blank._internal_size == res3._internal_size &&
+	       blank._internal_max_size == res3._internal_max_size);
+	assert((err3.flags & ERR_SIZE_ZERO) != 0);
+	printf("Passed\n");
+
+	printf("[11] Testing _vec_int_cpy with size exceeding max_size\n");
+	err_t err4 = ERR_T_INIT;
+	_VecIntInternal res4 =
+	    _vec_int_cpy(arr, res3._internal_max_size + 1, &err4);
+	assert(blank._internal_arr == res4._internal_arr &&
+	       blank._internal_capacity == res4._internal_capacity &&
+	       blank._internal_size == res4._internal_size &&
+	       blank._internal_max_size == res4._internal_max_size);
+	assert((err4.flags & ERR_SIZE_OVERFLOW) != 0);
+	printf("Passed\n");
+
+	printf("[12] Testing _vec_int_cpy allocation failure\n");
+	err_t err5 = ERR_T_INIT;
+	size_t huge_size = ((size_t)1 << 40);
+	_VecIntInternal res5 = _vec_int_cpy(arr, huge_size, &err5);
+	assert(res5._internal_arr == blank._internal_arr);
+	assert((err5.flags & ERR_ALLOC_FAIL) != 0);
+	printf("Passed\n");
+
+	printf("[13] Testing _vec_int_cpy with valid inputs\n");
+	err_t err = ERR_T_INIT;
+	int res[4] = { 10, 20, 30, 40 };
+	_VecIntInternal vec = _vec_int_cpy(res, 4, &err);
+	assert(err.flags == 0);
+	assert(vec._internal_size == 4);
+	assert(vec._internal_capacity == 4);
+	assert(memcmp(vec._internal_arr, res, sizeof(int) * 4) == 0);
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+/* =========================================================================
+ * 3. PUSH, POP, CAPACITY & SIZING
+ * ========================================================================= */
+
+static void
+test_push_back(void)
+{
+	printf("[14] Testing _vec_int_push_back null vec\n");
+	err_t err = ERR_T_INIT;
+	_vec_int_push_back(nullptr, 1, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+	printf("Passed\n");
+
+	printf("[15] Testing _vec_int_push_back null err\n");
+	_VecIntInternal vec1 = VEC_INIT;
+	_vec_int_push_back(&vec1, 1, nullptr);
+	assert(vec1._internal_size == 1);
+	_vec_int_delete(&vec1, &err);
+	printf("Passed\n");
+
+	printf("[16] Testing _vec_int_push_back size overflow\n");
+	_VecIntInternal vec2 = VEC_INIT;
+	err_t err2 = ERR_T_INIT;
+	vec2._internal_size = vec2._internal_max_size;
+	_vec_int_push_back(&vec2, 1, &err2);
+	assert((err2.flags & ERR_SIZE_OVERFLOW) != 0);
+	printf("Passed\n");
+
+	printf("[17] Testing push_back capacity growth realloc\n");
+	err_t err3 = ERR_T_INIT;
+	_VecIntInternal vec3 = VEC_INIT;
+	for (int val = 0; val < 10; val++)
+	{
+		_vec_int_push_back(&vec3, val, &err3);
+		assert(err3.flags == 0);
+	}
+	assert(vec3._internal_size == 10);
+	assert(vec3._internal_capacity >= 10);
+	_vec_int_delete(&vec3, &err3);
+	printf("Passed\n");
+}
+
+static void
+test_pop_back(void)
+{
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	printf("[18] Testing _vec_int_pop_back null vector\n");
+	_vec_int_pop_back(nullptr, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+	printf("Passed\n");
+
+	printf("[19] Testing _vec_int_pop_back size 0\n");
+	err = (err_t)ERR_T_INIT;
+	_vec_int_push_back(&vec, 42, &err);
+	_vec_int_pop_back(&vec,
+			  &err);  // size is now 0, but buffer is allocated
+	err = (err_t)ERR_T_INIT;
+	_vec_int_pop_back(&vec, &err);
+	assert((err.flags & ERR_SIZE_ZERO) != 0);
+	printf("Passed\n");
+
+	printf("[20] Testing _vec_int_pop_back valid pop\n");
+	err = (err_t)ERR_T_INIT;
+	_vec_int_push_back(&vec, 1, &err);
+	_vec_int_push_back(&vec, 2, &err);
+	assert(vec._internal_size == 2);
+	_vec_int_pop_back(&vec, &err);
+	assert(vec._internal_size == 1);
+	assert(vec._internal_arr[0] == 1);
+	assert(vec._internal_arr[1] == 0);
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+static void
+test_reserve(void)
+{
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	printf("[21] Testing _vec_int_reserve null vector\n");
+	_vec_int_reserve(nullptr, 1, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+	printf("Passed\n");
+
+	printf("[22] Testing _vec_int_reserve capacity 0\n");
+	err = (err_t)ERR_T_INIT;
+	_vec_int_reserve(&vec, 0, &err);
+	assert((err.flags & ERR_SIZE_ZERO) != 0);
+	printf("Passed\n");
+
+	printf("[23] Testing _vec_int_reserve calloc on unallocated buffer\n");
+	err = (err_t)ERR_T_INIT;
+	_vec_int_reserve(&vec, 32, &err);
+	assert(err.flags == 0);
+	assert(vec._internal_capacity == 32);
+	assert(vec._internal_arr != nullptr);
+	printf("Passed\n");
+
+	printf("[24] Testing _vec_int_reserve realloc to larger capacity\n");
+	_vec_int_reserve(&vec, 64, &err);
+	assert(err.flags == 0);
+	assert(vec._internal_capacity == 64);
+	printf("Passed\n");
+
+	printf("[25] Testing _vec_int_reserve truncating size\n");
+	vec._internal_size = 50;
+	_vec_int_reserve(&vec, 20, &err);
+	assert(vec._internal_size == 20);
+	assert(vec._internal_capacity == 20);
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+static void
+test_shrink_to_fit(void)
+{
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	printf("[26] Testing _vec_int_shrink_to_fit null vector\n");
+	_vec_int_shrink_to_fit(nullptr, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+	printf("Passed\n");
+
+	printf(
+	    "[27] Testing _vec_int_shrink_to_fit size 0 with allocated "
+	    "buffer\n");
+	err = (err_t)ERR_T_INIT;
+	_vec_int_push_back(&vec, 1, &err);
+	_vec_int_pop_back(&vec, &err);
+	err = (err_t)ERR_T_INIT;
+	_vec_int_shrink_to_fit(&vec, &err);
+	assert((err.flags & ERR_SIZE_ZERO) != 0);
+	printf("Passed\n");
+
+	printf("[28] Testing _vec_int_shrink_to_fit normal shrinkage\n");
+	_vec_int_reserve(&vec, 128, &err);
+	for (int val = 0; val < 5; val++)
+	{
+		_vec_int_push_back(&vec, val, &err);
+	}
+	assert(vec._internal_capacity == 128);
+	assert(vec._internal_size == 5);
+	err = (err_t)ERR_T_INIT;
+	_vec_int_shrink_to_fit(&vec, &err);
+	assert(err.flags == 0);
+	assert(vec._internal_capacity == 5);
+	assert(vec._internal_size == 5);
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+/* =========================================================================
+ * 4. GETTERS, ELEMENT ACCESS & CLEAR
+ * ========================================================================= */
+
+static void
+test_getters_and_access(void)
+{
+	printf("[29] Testing getters, clear, and boundary element access...\n");
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	// 1. Null pointer check
+	assert(_vec_int_data(nullptr, &err) == nullptr);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	assert(_vec_int_size(nullptr, &err) == 0);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	assert(_vec_int_capacity(nullptr, &err) == 0);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	assert(_vec_int_max_size(nullptr, &err) == 0);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	// 2. Unallocated buffer check for empty()
+	err = (err_t)ERR_T_INIT;
+	size_t unalloc_empty = _vec_int_empty(&vec, &err);
+	assert((err.flags & ERR_BUF_NULL) != 0);
+	assert(unalloc_empty != 0);
+
+	// 3. Allocate the buffer and pop so size is 0 with valid arr
+	err = (err_t)ERR_T_INIT;
+	_vec_int_push_back(&vec, 100, &err);
+	_vec_int_pop_back(&vec, &err);
+	err = (err_t)ERR_T_INIT;
+
+	// Now _internal_arr is non-null and size is 0:
+	assert(_vec_int_empty(&vec, &err) == 0);
+
+	// Boundary element access on size 0
+	err = (err_t)ERR_T_INIT;
+	assert(_vec_int_front(&vec, &err) == 0 ||
+	       (err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	assert(_vec_int_back(&vec, &err) == 0 ||
+	       (err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	// 4. Populate container
+	err = (err_t)ERR_T_INIT;
+	_vec_int_push_back(&vec, 10, &err);
+	_vec_int_push_back(&vec, 20, &err);
+	_vec_int_push_back(&vec, 30, &err);
+
+	assert(_vec_int_size(&vec, &err) == 3);
+	assert(_vec_int_capacity(&vec, &err) >= 3);
+	assert(_vec_int_data(&vec, &err) == vec._internal_arr);
+	assert(_vec_int_front(&vec, &err) == 10);
+	assert(_vec_int_back(&vec, &err) == 30);
+	assert(_vec_int_begin(&vec, &err) == 0);
+	assert(_vec_int_end(&vec, &err) == 2);
+
+	// Out of bounds at()
+	err = (err_t)ERR_T_INIT;
+	assert(_vec_int_at(&vec, 10, &err) == nullptr);
+	assert((err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	// Clear container
+	err = (err_t)ERR_T_INIT;
+	_vec_int_clear(&vec, &err);
+	assert(vec._internal_size == 0);
+	assert(vec._internal_arr[0] == 0);
+
+	_vec_int_delete(&vec, &err);
+	assert(vec._internal_arr == nullptr);
+	assert(vec._internal_size == 0);
+	assert(vec._internal_capacity == 0);
+
+	printf("Passed\n");
+}
+
+/* =========================================================================
+ * 5. SWAP, ERASE, RESIZE, ASSIGN & INSERT
+ * ========================================================================= */
+
+static void
+test_swap(void)
+{
+	printf("[30] Testing _vec_int_swap...\n");
+	_VecIntInternal a = VEC_INIT;
+	_VecIntInternal b = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	// Null vector checks
+	_vec_int_swap(nullptr, &b, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	_vec_int_swap(&a, nullptr, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	// Normal swap
+	err = (err_t)ERR_T_INIT;
+	_vec_int_push_back(&a, 100, &err);
+	_vec_int_push_back(&b, 200, &err);
+	_vec_int_push_back(&b, 300, &err);
+
+	_vec_int_swap(&a, &b, &err);
+	assert(a._internal_size == 2);
+	assert(a._internal_arr[0] == 200);
+	assert(b._internal_size == 1);
+	assert(b._internal_arr[0] == 100);
+
+	_vec_int_delete(&a, &err);
+	_vec_int_delete(&b, &err);
+	printf("Passed\n");
+}
+
+static void
+test_erase_variants(void)
+{
+	printf("[31] Testing _vec_int_erase single & range overloads...\n");
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	for (int val = 0; val <= 5; val++)
+	{
+		_vec_int_push_back(&vec, val, &err);
+	}  // {0, 1, 2, 3, 4, 5}
+
+	// Single element erase out of bounds (noop)
+	_vec_int_erase(&vec, 10, &err);
+	assert(vec._internal_size == 6);
+
+	// Erase index 2 (value 2) -> {0, 1, 3, 4, 5}
+	_vec_int_erase(&vec, 2, &err);
+	assert(vec._internal_size == 5);
+	assert(vec._internal_arr[2] == 3);
+
+	// Range erase invalid bounds
+	err = (err_t)ERR_T_INIT;
+	_vec_int_erase(&vec, 4, 2, &err);  // iter_end <= iter_start
+	assert((err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	err = (err_t)ERR_T_INIT;
+	_vec_int_erase(&vec, 0, 10, &err);  // iter_end > size
+	assert((err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	// Range erase middle: index 1 through 3 ({0, [1, 3], 4, 5} -> {0, 4,
+	// 5})
+	err = (err_t)ERR_T_INIT;
+	_vec_int_erase(&vec, 1, 3, &err);
+	assert(vec._internal_size == 3);
+	assert(vec._internal_arr[0] == 0);
+	assert(vec._internal_arr[1] == 4);
+	assert(vec._internal_arr[2] == 5);
+
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+static void
+test_resize(void)
+{
+	printf("[32] Testing _vec_int_resize (zero-fill & value-fill)...\n");
+	_VecIntInternal vec = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	// Null vector
+	_vec_int_resize((_VecIntInternal*)nullptr, 10, &err);
+	assert((err.flags & ERR_VEC_NULL) != 0);
+
+	// Resize unallocated buffer to size 5
+	err = (err_t)ERR_T_INIT;
+	_vec_int_resize(&vec, 5, &err);
+	assert(err.flags == 0);
+	assert(vec._internal_size == 5);
+	assert(vec._internal_arr[0] == 0);
+
+	// Same size requested
+	err = (err_t)ERR_T_INIT;
+	_vec_int_resize(&vec, 5, &err);
+	assert((err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	// Exceeds max size
+	err = (err_t)ERR_T_INIT;
+	_vec_int_resize(&vec, vec._internal_max_size + 1, &err);
+	assert((err.flags & ERR_SIZE_OVERFLOW) != 0);
+
+	// Grow with value fill
+	err = (err_t)ERR_T_INIT;
+	_vec_int_resize(&vec, 8, 5, &err);
+	assert(vec._internal_size == 8);
+	assert(vec._internal_arr[5] == 5);
+	assert(vec._internal_arr[7] == 5);
+
+	// Shrink with value fill
+	err = (err_t)ERR_T_INIT;
+	_vec_int_resize(&vec, 3, 10, &err);
+	assert(vec._internal_size == 3);
+
+	_vec_int_delete(&vec, &err);
+	printf("Passed\n");
+}
+
+static void
+test_assign(void)
+{
+	printf("[33] Testing _vec_int_assign overloads...\n");
+	_VecIntInternal dst = VEC_INIT;
+	_VecIntInternal src = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	// Populate src: 1, 2, 3, 4, 5
+	for (int val = 1; val <= 5; val++)
+	{
+		_vec_int_push_back(&src, val, &err);
+	}
+
+	// Allocate dst buffer first so it is not unallocated
+	_vec_int_push_back(&dst, 999, &err);
+	err = (err_t)ERR_T_INIT;
+
+	// 1. Fill assign: 4 42's
+	_vec_int_assign(&dst, 4, 42, &err);
+	assert(err.flags == 0);
+	assert(dst._internal_size == 4);
+	assert(dst._internal_arr[0] == 42);
+	assert(dst._internal_arr[3] == 42);
+
+	// 2. Fill assign with 0 amount
+	err = (err_t)ERR_T_INIT;
+	_vec_int_assign(&dst, 0, 50, &err);
+	assert((err.flags & ERR_SIZE_ZERO) != 0);
+
+	// 3. Range assign self-buffer check
+	err = (err_t)ERR_T_INIT;
+	_vec_int_assign(&dst, &dst, 0, 2, &err);
+	assert((err.flags & ERR_DOUBLE_BUF) != 0);
+
+	// 4. Range assign invalid sub-range (start >= end)
+	err = (err_t)ERR_T_INIT;
+	_vec_int_assign(&dst, &src, 3, 2, &err);
+	assert((err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	// 5. Range assign out of bounds end
+	err = (err_t)ERR_T_INIT;
+	_vec_int_assign(&dst, &src, 0, 10, &err);
+	assert((err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	_vec_int_delete(&dst, &err);
+	_vec_int_delete(&src, &err);
+	printf("Passed\n");
+}
+
+static void
+test_insert(void)
+{
+	printf("[34] Testing _vec_int_insert overloads...\n");
+	_VecIntInternal vec = VEC_INIT;
+	_VecIntInternal other = VEC_INIT;
+	err_t err = ERR_T_INIT;
+
+	// Single insert on unallocated buffer
+	_vec_int_insert(&vec, 0, 500, &err);
+	assert(vec._internal_size == 1);
+	assert(vec._internal_arr[0] == 500);
+
+	// Single insert out of bounds
+	err = (err_t)ERR_T_INIT;
+	_vec_int_insert(&vec, 5, 999, &err);
+	assert((err.flags & ERR_OUT_OF_BOUNDS) != 0);
+
+	// Single insert at middle: index 0 (100, then 500 shifts to 1)
+	err = (err_t)ERR_T_INIT;
+	_vec_int_insert(&vec, 0, 100, &err);
+	assert(vec._internal_size == 2);
+	assert(vec._internal_arr[0] == 100);
+	assert(vec._internal_arr[1] == 500);
+
+	// Repeated insert: insert 3 200s at index 1 -> {100, 200, 200, 200,
+	// 500}
+	_vec_int_insert(&vec, 1, 3, 200, &err);
+	assert(vec._internal_size == 5);
+	assert(vec._internal_arr[1] == 200);
+	assert(vec._internal_arr[3] == 200);
+	assert(vec._internal_arr[4] == 500);
+
+	// Repeated insert amount 0
+	err = (err_t)ERR_T_INIT;
+	_vec_int_insert(&vec, 0, 0, 300, &err);
+	assert((err.flags & ERR_SIZE_ZERO) != 0);
+
+	// Vector-from-vector range insert
+	_vec_int_push_back(&other, 1, &err);
+	_vec_int_push_back(&other, 2, &err);
+
+	// Double buffer check
+	err = (err_t)ERR_T_INIT;
+	_vec_int_insert(&vec, &vec, 0, 0, 1, &err);
+	assert((err.flags & ERR_DOUBLE_BUF) != 0);
+
+	_vec_int_delete(&vec, &err);
+	_vec_int_delete(&other, &err);
+	printf("Passed\n");
+}
+
+/* =========================================================================
+ * MAIN TEST RUNNER
+ * ========================================================================= */
+
+int
+main(void)
+{
+	printf("=========================================\n");
+	printf(" Starting Complete libvec Unit Test Suite\n");
+	printf("=========================================\n");
+
+	test_push_back_single();
+	test_null_guards();
+	test_origin_override();
+	test_print_vec();
+	test_cpy();
+	test_push_back();
+	test_pop_back();
+	test_reserve();
+	test_shrink_to_fit();
+	test_getters_and_access();
+	test_swap();
+	test_erase_variants();
+	test_resize();
+	test_assign();
+	test_insert();
+
+	printf("=========================================\n");
+	printf(" All 34 Test Suites Executed Successfully!\n");
+	printf("=========================================\n");
+	return 0;
+}