Author: Bo Persson
Date: 11:00:46 11/08/99
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> Question to programmers: Do you use MMX operations? I have tried to, but so far I haven't found any good use for it. :-( The MMX instructions are very good at producing long bit streams, like you say you have used in a DES encryption. Unfortunately, at least in my program I have just found one place (attack detection) where there is a relatively long sequence of bit computation. However, it is not used very often, so any improvement would be slight. One problem with the MMX instructions is that they produce bitmaps, but no status bits. If you AND two bitboards in a chess program, you often don't use the resulting bits, but want to know if there was an intersection. MMX won't tell you that! Bo Persson bop@malmo.mail.telia.com
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