PNG_GAMMA_MAC_18  599 contrib/libtests/makepng.c       if (gamma == PNG_GAMMA_MAC_18)
PNG_GAMMA_MAC_18 1309 contrib/libtests/makepng.c          gamma = PNG_GAMMA_MAC_18;
PNG_GAMMA_MAC_18  446 example.c            screen_gamma = PNG_GAMMA_MAC_18 or 1.0; /* Good guesses for Mac systems */
PNG_GAMMA_MAC_18  235 pngrtran.c        else if (output_gamma == PNG_GAMMA_MAC_18 ||
PNG_GAMMA_MAC_18  236 pngrtran.c           output_gamma == PNG_FP_1 / PNG_GAMMA_MAC_18)