hash.h File Reference

Pre-generated Zobrist hash values for chess positions. More...

#include "scid/core/board.h"

Include dependency graph for hash.h:

Go to the source code of this file.

Classes
class	scid::core::HashVal

Variables
constexpr auto	scid::core::HASH = HashVal()
auto const &	scid::core::UNHASH = HASH
constexpr unsigned	scid::core::stdStartPawnHash
constexpr unsigned	scid::core::stdStartHash

Detailed Description

Pre-generated Zobrist hash values for chess positions.

Variable Documentation

stdStartHash

constexpr unsigned scid::core::stdStartHash

inlineconstexpr

Initial value:

= [] {
    auto h = stdStartPawnHash;
    HASH (h,WR,A1);  HASH (h,WN,B1);  HASH (h,WB,C1);  HASH (h,WQ,D1);
    HASH (h,WK,E1);  HASH (h,WB,F1);  HASH (h,WN,G1);  HASH (h,WR,H1);
    HASH (h,BR,A8);  HASH (h,BN,B8);  HASH (h,BB,C8);  HASH (h,BQ,D8);
    HASH (h,BK,E8);  HASH (h,BB,F8);  HASH (h,BN,G8);  HASH (h,BR,H8);
    return h;
}()

stdStartPawnHash

constexpr unsigned scid::core::stdStartPawnHash

inlineconstexpr

Initial value:

= [] {
    unsigned h = 0;
    HASH (h,WP,A2);  HASH (h,WP,B2);  HASH (h,WP,C2);  HASH (h,WP,D2);
    HASH (h,WP,E2);  HASH (h,WP,F2);  HASH (h,WP,G2);  HASH (h,WP,H2);
    HASH (h,BP,A7);  HASH (h,BP,B7);  HASH (h,BP,C7);  HASH (h,BP,D7);
    HASH (h,BP,E7);  HASH (h,BP,F7);  HASH (h,BP,G7);  HASH (h,BP,H7);
    return h;
}()