MW>Herman Schonfeld wrote in a message to Darin McBride:
 NJ>  //Screen[x+y*320] = color;
 NJ>  Screen[x+(y<<6)+(y<<8)] = color; /* same as above but here the
 NJ>          multiplication is replaced with
 NJ>          shifts to make it faster */
DM>Are you SURE that two shift operations followed by an addition is
MW>really
DM>faster than the hardware-optimized integer multiplication?
DM>Perhaps on an 8086... but on an 80486?  Probably not...
 HS> Bit shifting will ALWAYS be faster than multiplying.
MW>According to a book I am reading right now. Bit shifting is faster by a
MW>factor of around 3 times. You just have to be careful if you shift too
MW>far you may lose significant bits. :-(
My point exactly, you should forward this message to the Chris Downs.
MW>   Mike....
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