Author: Eugene Nalimov
Date: 16:04:25 04/09/02
Go up one level in this thread
Something like that is more or less portable and does not require any dirty
tricks:
extern unsigned char rgReverseByte[256];
unsigned Reverse32 (unsigned uValue)
{
return ((rgReverseByte[uValue & 0xFF]) << 24) +
((rgReverseByte[(uValue >> 8) & 0xFF]) << 16) +
((rgReverseByte[(uValue >> 16) & 0xFF]) << 8) +
rgReverseByte[uValue >> 24];
}
Eugene
On April 09, 2002 at 17:32:15, Alvaro Jose Povoa Cardoso wrote:
>Does anyone kow how to do a fast 32bit bitboard mirroring?
>bit 0 -> bit 31
>bit 1 -> bit 30
>bit 2 -> bit 29
>...etc
>
>I would like to do it fast.
>
>Best regards,
>Alvaro Cardoso
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.