Author: Dann Corbit
Date: 20:09:24 01/24/03
typedef unsigned __int64 Bitboard;
/*
From:
http://www.mostang.com/~davidm/papers/expo97/paper/doc005.html
*/
Bitboard byterev_long (Bitboard L) {
static const Bitboard mask = 0x0101010101010101;
return (((L & (mask << 0)) << 7) | ((L >> 7) & (mask << 0)) |
((L & (mask << 1)) << 5) | ((L >> 5) & (mask << 1)) |
((L & (mask << 2)) << 3) | ((L >> 3) & (mask << 2)) |
((L & (mask << 3)) << 1) | ((L >> 1) & (mask << 3)));
}
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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