361    png_ptr->screen_gamma = output_gamma;  in png_set_alpha_mode_fixed()
835    png_ptr->screen_gamma = scrn_gamma;  in png_set_gamma_fixed()
1075 png_gamma_threshold(png_fixed_point screen_gamma, png_fixed_point file_gamma)  in png_gamma_threshold()  argument
1085    return !png_muldiv(&gtest, screen_gamma, file_gamma, PNG_FP_1) ||  in png_gamma_threshold()
1301          if (png_ptr->screen_gamma != 0) /* screen set too */  in png_init_read_transformations()
1303                png_ptr->screen_gamma);  in png_init_read_transformations()
1309             png_ptr->screen_gamma = png_reciprocal(png_ptr->colorspace.gamma);  in png_init_read_transformations()
1312       else if (png_ptr->screen_gamma != 0)  in png_init_read_transformations()
1318          png_ptr->colorspace.gamma = png_reciprocal(png_ptr->screen_gamma);  in png_init_read_transformations()
1326          png_ptr->screen_gamma = png_ptr->colorspace.gamma = PNG_FP_1;  in png_init_read_transformations()
1404    if (!png_gamma_significant(png_ptr->screen_gamma))  in png_init_read_transformations()
1560             png_gamma_significant(png_ptr->screen_gamma)))  in png_init_read_transformations()
1563             || png_gamma_significant(png_ptr->screen_gamma)  in png_init_read_transformations()
1569          && png_gamma_significant(png_ptr->screen_gamma))  in png_init_read_transformations()
1614                      g = (png_ptr->screen_gamma);  in png_init_read_transformations()
1621                         png_ptr->screen_gamma);  in png_init_read_transformations()
1627                         png_ptr->screen_gamma);  in png_init_read_transformations()
1723                   g = png_ptr->screen_gamma;  in png_init_read_transformations()
1730                      png_ptr->screen_gamma);  in png_init_read_transformations()
1736                       png_ptr->screen_gamma);  in png_init_read_transformations()