png_build_8bit_table 3995 png.c               png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
png_build_8bit_table 4004 png.c                  png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1,
png_build_8bit_table 4007 png.c                  png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1,