48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* eval-simple.h - simple position evaluation.
|
|
*
|
|
* Copyright (C) 2021 Bruno Raoult ("br")
|
|
* Licensed under the GNU General Public License v3.0 or later.
|
|
* Some rights reserved. See COPYING.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with this
|
|
* program. If not, see <https://www.gnu.org/licenses/gpl-3.0-standalone.html>.
|
|
*
|
|
* SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
|
|
*
|
|
*/
|
|
|
|
#ifndef EVAL_SIMPLE_H
|
|
#define EVAL_SIMPLE_H
|
|
|
|
|
|
#include "chessdefs.h"
|
|
|
|
/* no queen on board */
|
|
#define simple_no_queen(p, c) \
|
|
( !(p)->bb[c][BB_QUEEN] )
|
|
|
|
#define simple_one_queen(p, c) \
|
|
( popcount64((p)->bb[c][BB_QUEEN]) == 1 )
|
|
|
|
#define simple_no_rook(p, c) \
|
|
(!(p)->bb[c][BB_ROOK])
|
|
|
|
#define simple_one_minor_piece(p, c) \
|
|
(popcount64((p)->bb[c][BB_KNIGHT] | (p)->bb[c][BB_BISHOP]) == 1)
|
|
|
|
#define simple_is_endgame(p) \
|
|
( (simple_no_queen(p, WHITE) || \
|
|
(simple_one_queen(p, WHITE) && \
|
|
simple_no_rook(p, WHITE) && \
|
|
simple_one_minor_piece(p, WHITE))) \
|
|
&& \
|
|
(simple_no_queen(p, BLACK) || \
|
|
(simple_one_queen(p, BLACK) && \
|
|
simple_no_rook(p, BLACK) && \
|
|
simple_one_minor_piece(p, BLACK))) )
|
|
|
|
void eval_simple_init(void);
|
|
eval_t eval_simple(pos_t *pos);
|
|
|
|
#endif /* EVAL_SIMPLE_H */
|