PixelIterateDualRead  546 magick/compare.c       status=PixelIterateDualRead(call_back,
PixelIterateDualRead  921 magick/compare.c   (void) PixelIterateDualRead(ComputePixelError,
PixelIterateDualRead  114 magick/pixel_iterator.h   PixelIterateDualRead(PixelIteratorDualReadCallback call_back,