start on horizontal_flip

src/main.c

@@ -206,7 +206,11 @@ chromatic_circular_shift(unsigned int clr, int n)
 }
 
 unsigned int*
-horizontal_flip(unsigned int* buf, int size, int w) {
+horizontal_flip(unsigned int* buf, int size, int w, int h) {
+	unsigned int* flip = malloc((w *h) * sizeof(unsigned int));
+
+	free(buf);
+	return flip;
 
 }