Author: Alessandro Damiani
Date: 02:05:24 12/03/02
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On December 02, 2002 at 21:01:05, Walter Faxon wrote: >On December 02, 2002 at 19:43:15, Gerd Isenberg wrote: > ><snip> >> >>Congrats, Walter!! >> >>10-bit pattern bsf PI2FD btr c LSB_64 >>0x0000000011111133 15.3 18.0 19.1 22.8 17.8 >>0x1010111010101110 19.7 18.5 19.6 23.4 17.8 >>0x1111113300000000 20.6 18.0 19.1 22.8 17.8 >> ><snip> >> >>Geniously, sorry Walter, that i overlooked your approach. It is clearly the >>fastest of these routines. De Bruijn Sequence? May have a close look to the >>constant. >> >>I'm really impressed. >> >>Regards, >>Gerd > > >Thanks, Gerd. It was based on 32-bit code I wrote in 1992, for the 80386 with >its 10+3n clocks on the bsf instruction. Both versions were written without >knowledge of De Bruijn. Thank you very much for your public testing. Maybe now >the result won't be lost! :) > Yeah! Now I opened my eyes. :) Alessandro
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