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misc unfinished changes (kinda stash)

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Bruno Raoult
2024-08-16 12:12:55 +02:00
parent bb866cb933
commit 87555f5405
5 changed files with 112 additions and 26 deletions
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23
src/eval-simple.c
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@@ -48,19 +48,15 @@ eval_t eval_material(pos_t *pos)
* eval_simple() - simple and fast position evaluation
* @pos: &position to evaluate
*
* This function is normally used only during initialization,
* or when changing phase (middlegame <--> endgame), as the eval
* will be done incrementally when doing moves.
*
* @return: the @pos evaluation in centipawns
*/
eval_t eval_simple(pos_t *pos)
{
eval_t eval[2] = { 0, 0 };
eval_t eval[2] = { 0, 0 }, res;
eval_t mg_eval[2], eg_eval[2];
//struct pc_sq = sq_ int (*gg)[6 + 2][64] = eg? pc_sq_eg: pc_sq_mg;
//pos->eval_simple_phase = ENDGAME;
int eg_weight = clamp((int) pos->phase, ALL_PHASE, 0);
int mg_weight = ALL_PHASE - pos->phase;
for (color_t color = WHITE; color < COLOR_NB; ++color) {
mg_eval[color] = 0;
@@ -80,10 +76,15 @@ eval_t eval_simple(pos_t *pos)
}
}
eval[WHITE] = mg_eval[WHITE] * mg_weight + eg_eval[WHITE] * eg_weight;
eval[BLACK] = mg_eval[BLACK] * mg_weight + eg_eval[BLACK] * eg_weight;
res = (eval[WHITE] - eval[BLACK]) / ALL_PHASE;
# ifdef DEBUG_EVAL
printf("phase:%d mg[WHITE]:%d mg[BLACK]:%d eg[WHITE]:%d eg[BLACK]:%d\n",
pos->phase, mg_eval[WHITE], mg_eval[BLACK], eg_eval[WHITE], eg_eval[BLACK]);
printf("phase:%d mg:%d/%d eg:%d/%d ev:%d/%d RES=%d\n",
pos->phase, mg_eval[WHITE], mg_eval[BLACK],
eg_eval[WHITE], eg_eval[BLACK],
eval[WHITE], eval[BLACK], res
);
# endif
return eval[WHITE] - eval[BLACK];
return res;
}