=====================
         File:pixel_doubling_blit.c
       Author:Jon Watte
      Release:1997-08-03
Compatibility:PR,AA,DR8
     Location:pub/contrib/libraries
  Description:Source for a pixel doubling bitmap-to-screen blitter
        Notes:This source file (as featured in Be DOOM!) implements the 
most efficient transfer method possible for going from an NxM bitmap to 
an N*2xM*2 area on screen. For example, from a 320x200 bitmap to a 640x400 
area on screen. It has been somewhat tested, and is believed to work, but 
caveat programmer.
=====================