Winboard Forum

Uri Blass wrote:I find in fruit pawn.cpp the following variables

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int BitEQ[16];
int BitLT[16];
int BitLE[16];
int BitGT[16];
int BitGE[16];


[/quote="Uri Blass"]
These are rank translators for going from bitboard to 0x88

Uri Blass wrote:

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int BitFirst[0x100];
int BitLast[0x100];
int BitCount[0x100];
int BitRev[0x100];


[/quote="Uri Blass"]
These are also for bitboard translation.
BitFirst is for the first set bit
BitLast is for the last set bit
BitCount is the number of bits
BitRev is to reverse the bits.

Uri Blass wrote:When I can guess what it the meaning of the last variables from the name it is hard to understand the meaning of the first variable only based on the name and I do not like reading the source only to guess from it what they mean.

I think that it is better if source code at least include some file that explain the meaning of the variables in english,unless it is obvious by the name or they are explained at the file that they are defined.

Uri

Dann Corbit wrote:These are rank translators for going from bitboard to 0x88

Pallav Nawani wrote:

Dann Corbit wrote:These are rank translators for going from bitboard to 0x88

I don't want to hijack this thread, but Dann, how come you haven't written your own chess engine? Or have you? I know that you've worked on Beowulf.

Pallav

Uri Blass wrote:int BitEQ[16];
int BitLT[16];
int BitLE[16];
int BitGT[16];
int BitGE[16];