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chore: Clean up the return statements and update example.c accordingly

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Cosmin Truta
2024-01-23 21:25:03 +02:00
parent 92b2128a75
commit 27e548af25
11 changed files with 159 additions and 159 deletions
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6
png.h
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@@ -908,15 +908,15 @@ PNG_EXPORT(2, void, png_set_sig_bytes, (png_structrp png_ptr, int num_bytes));
/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
* PNG file. Returns zero if the supplied bytes match the 8-byte PNG
* signature, and non-zero otherwise. Having num_to_check == 0 or
* start > 7 will always fail (ie return non-zero).
* start > 7 will always fail (i.e. return non-zero).
*/
PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, size_t start,
size_t num_to_check));
/* Simple signature checking function. This is the same as calling
* png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
* png_check_sig(sig, n) := (png_sig_cmp(sig, 0, n) != 0).
*/
#define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n))
#define png_check_sig(sig, n) (png_sig_cmp((sig), 0, (n)) != 0)
/* Allocate and initialize png_ptr struct for reading, and any other memory. */
PNG_EXPORTA(4, png_structp, png_create_read_struct,