Author: Oliver Roese
Date: 08:37:56 05/21/02
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On May 20, 2002 at 02:05:46, James Robertson wrote: >Is there any assember command to reverse the bits in an integer? > >(e.g. 11101010 would become 01010111) > >Thanks, >James This operation is a needed to implement the so called discrete FFT (Cooley J.W, Tukey J.W.). Since there is money in it, one should expect to find some papers on the net about that. You can search e.g in http://citeseer.nj.nec.com/cs Once I had a paper about that on my harddisk, but i couldn't find it anymore, probably i have deleted it, sorry. As compensation i suggest a tabledriven approach: First swap the chars in your word, then swap the bits in them, using a table lookup. Oliver
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