Average16InterpolatePixel  659 Magick++/lib/Magick++/Include.h   using MagickCore::Average16InterpolatePixel;
Average16InterpolatePixel 1179 magick/option.c     { "Average16", Average16InterpolatePixel, UndefinedOptionFlag, MagickFalse },
Average16InterpolatePixel 4467 magick/pixel.c     case Average16InterpolatePixel:      /* nearest 16 neighbours */
Average16InterpolatePixel 4480 magick/pixel.c         if (interpolate == Average16InterpolatePixel)