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   comp.lang.asm.x86      Ahh, the lost art of x86 assembly      4,675 messages   

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   Message 3,369 of 4,675   
   Terje Mathisen to wolfgang kern   
   Re: Reciprocal MUL LUT   
   25 Apr 18 09:46:50   
   
   From: terje.mathisen@nospicedham.tmsw.no   
      
   wolfgang kern wrote:   
   >   
   > Terje asked:   
   >   
   >> Interesting ideas, I've got to ask though, what is the need/intention   
   >> here?   
   >   
   >> I.e. why do you need the prime reciprocals, what do you need them for,   
   >   
   > speed up my 512 bit calculator for 1/P 1/N with minor rounding issues.   
   > ["black peep hole watchers" and a few "metoo scientists" asked for]   
      
   Again, what is it used for?   
      
   1/P == reciprocal prime, 1/N any reciprocal which can then be syntesized   
   by first factoring N and then combining the prime reciprocals?   
      
   >   
   >> why just 512 of them,   
   >   
   > not limited to 512 primes, but I want 512 bits precise 1/N.   
      
   Anything special with 512?   
      
   What is the final requirement?   
      
   >   
   >> and is size more or less important than speed of access?   
   >   
   > I search for both but see bloat as speed-eater (load-time&cache-burst).   
   > __   
      
   OK   
      
   Terje   
      
   --   
   -    
   "almost all programming can be viewed as an exercise in caching"   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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