png_XYZ_from_xy  1141 3rdparty/libpng/png.c    switch (png_XYZ_from_xy(XYZ, xy))
png_XYZ_from_xy  1386 3rdparty/libpng/pngpriv.h PNG_EXTERN int png_XYZ_from_xy PNGARG((png_XYZ *XYZ, png_xy xy));