level_flags       355 lib/zlib_deflate/deflate.c         uInt level_flags = (s->level-1) >> 1;
level_flags       357 lib/zlib_deflate/deflate.c         if (level_flags > 3) level_flags = 3;
level_flags       358 lib/zlib_deflate/deflate.c         header |= (level_flags << 6);