Author: Rafael Andrist
Date: 04:17:16 06/11/02
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On June 10, 2002 at 18:49:17, Dann Corbit wrote: >On June 10, 2002 at 17:21:32, Peter Fendrich wrote: > >>On June 10, 2002 at 15:47:14, Dann Corbit wrote: >> >>Dann, >>why do you collect these rotating functions? >>When it comes to me I don't make any rotating during search just during the >>initial phase when the program starts. >>During search it is lookups in order to get the rotated file or diagonal. > >Suppose that you wanted to switch from 0x88 to bitboard, and all that you >maintained was a single, non-rotated bitboard when in 0x88 mode? You need to generate the rotated bitboards only once (after each new entered position). Then you can simply update them wihtout re-generating them all the time - so I don't see why it is so important for you to get such a fast code for that. BTW the bitboards rotated 45°, 90° and 135° may be implemented differently. regards Rafael B. Andrist
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