Lines Matching refs:sig
1031 /* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
1036 PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, png_size_t start,
1040 * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
1042 #define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n))
2583 # define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
