Author: Robert Hyatt
Date: 08:09:40 02/23/99
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On February 23, 1999 at 04:58:30, Dave Gomboc wrote: >On February 22, 1999 at 11:14:14, Robert Hyatt wrote: > >>I'll try to figure out a way to post my values here if you are interested. >>64 * 12 isn't horribly big, but when you display them as 64 bit values, they >>are big. The main issue is how to initialize such an array in a portable >>way... IE (BITBOARD ran[12][64] = {{1,2,3},{4,5,6}}; The numbers 1,2,3 >>default to 'int' which is bad. I don't know what to do for all compilers >>(IE 123ULL or (BITBOARD) 123) > >I don't know of a portable way to do this either. My Rush Hour >(www.puzzles.com) software has "#if defined"s like crazy for all of the annoying >cases, e.g. > Cute bit of trivia. Look on the outside of the Rush Hour box, and check out the names. One of them dates back to Cray Blitz. But I won't spoil the mystery just yet. :) >/* MSVC 6.0 */ >typedef unsigned __int64 bitboard; >const bitboard outside_edge = 0xFF818181818181FF; > >/* SGI MIPSpro 7.2.1 (with -64 switch) */ >typedef unsigned long bitboard; >const bitboard outside_edge = 0xFF818181818181FF; > >/* g++ 2.7.2 */ >typedef unsigned long long bitboard; >const bitboard outside_edge = 0xFF818181818181FFll; > >Of the three, I like SGI's setup the best. > >Dave Gomboc
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