PIXEL_BITS_DIFF    87 modules/soft_raster/ftgrays.c #define UPSCALE( x )    ( (x) >> ( PIXEL_BITS_DIFF) )
PIXEL_BITS_DIFF    88 modules/soft_raster/ftgrays.c #define DOWNSCALE( x )  ( (x) << ( PIXEL_BITS_DIFF) )