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move_do2: save/restore state inside func; perft: add silent option

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Bruno Raoult
2024-04-18 09:54:58 +02:00
parent 36e1d987f3
commit c710da4bf9
6 changed files with 206 additions and 34 deletions
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22
src/search.c
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@@ -41,7 +41,7 @@
*
* @return: total moves found at @depth level.
*/
u64 perft(pos_t *pos, int depth, int ply)
u64 perft(pos_t *pos, int depth, int ply, bool output)
{
int subnodes;
u64 nodes = 0;
@@ -60,8 +60,8 @@ u64 perft(pos_t *pos, int depth, int ply)
nodes++;
} else {
move_do(pos, *move);
subnodes = perft(pos, depth - 1, ply + 1);
if (ply == 1) {
subnodes = perft(pos, depth - 1, ply + 1, output);
if (output && ply == 1) {
char movestr[8];
printf("%s: %d\n", move_str(movestr, *move, 0), subnodes);
}
@@ -71,7 +71,7 @@ u64 perft(pos_t *pos, int depth, int ply)
}
}
if (ply == 1)
if (output && ply == 1)
printf("Total: %lu\n", nodes);
return nodes;
}
@@ -87,7 +87,7 @@ u64 perft(pos_t *pos, int depth, int ply)
*
* @return: total moves found at @depth level.
*/
u64 perft_test(pos_t *pos, int depth, int ply)
u64 perft_test(pos_t *pos, int depth, int ply, bool output)
{
int subnodes;
u64 nodes = 0;
@@ -97,7 +97,6 @@ u64 perft_test(pos_t *pos, int depth, int ply)
movelist.nmoves = 0;
pos_set_checkers_pinners_blockers(pos);
state = pos->state;
pos_legal(pos, pos_gen_pseudo(pos, &movelist));
last = movelist.move + movelist.nmoves;
@@ -105,19 +104,18 @@ u64 perft_test(pos_t *pos, int depth, int ply)
if (depth == 1) {
nodes++;
} else {
move_do(pos, *move);
subnodes = perft(pos, depth - 1, ply + 1);
if (ply == 1) {
move_do2(pos, *move, &state);
subnodes = perft(pos, depth - 1, ply + 1, output);
if (output && ply == 1) {
char movestr[8];
printf("%s: %d\n", move_str(movestr, *move, 0), subnodes);
}
nodes += subnodes;
move_undo(pos, *move);
pos->state = state;
move_undo2(pos, *move, &state);
}
}
if (ply == 1)
if (output && ply == 1)
printf("Total: %lu\n", nodes);
return nodes;
}