327    png_ptr->screen_gamma = output_gamma;  in png_set_alpha_mode_fixed()
804    png_ptr->screen_gamma = scrn_gamma;  in png_set_gamma_fixed()
1052 png_gamma_threshold(png_fixed_point screen_gamma, png_fixed_point file_gamma)  in png_gamma_threshold()  argument
1062    return !png_muldiv(&gtest, screen_gamma, file_gamma, PNG_FP_1) ||  in png_gamma_threshold()
1272          if (png_ptr->screen_gamma != 0) /* screen set too */  in png_init_read_transformations()
1274                png_ptr->screen_gamma);  in png_init_read_transformations()
1280             png_ptr->screen_gamma = png_reciprocal(png_ptr->gamma);  in png_init_read_transformations()
1283       else if (png_ptr->screen_gamma != 0)  in png_init_read_transformations()
1289          png_ptr->gamma = png_reciprocal(png_ptr->screen_gamma);  in png_init_read_transformations()
1297          png_ptr->screen_gamma = png_ptr->gamma = PNG_FP_1;  in png_init_read_transformations()
1372    if (!png_gamma_significant(png_ptr->screen_gamma))  in png_init_read_transformations()
1520             png_gamma_significant(png_ptr->screen_gamma)))  in png_init_read_transformations()
1523             || png_gamma_significant(png_ptr->screen_gamma)  in png_init_read_transformations()
1529          && png_gamma_significant(png_ptr->screen_gamma))  in png_init_read_transformations()
1574                      g = (png_ptr->screen_gamma);  in png_init_read_transformations()
1581                         png_ptr->screen_gamma);  in png_init_read_transformations()
1587                         png_ptr->screen_gamma);  in png_init_read_transformations()
1683                   g = png_ptr->screen_gamma;  in png_init_read_transformations()
1689                   gs = png_reciprocal2(png_ptr->gamma, png_ptr->screen_gamma);  in png_init_read_transformations()
1695                       png_ptr->screen_gamma);  in png_init_read_transformations()