diff options
Diffstat (limited to 'include/zobrist.c')
| -rw-r--r-- | include/zobrist.c | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/include/zobrist.c b/include/zobrist.c index feff5fa..21a99af 100644 --- a/include/zobrist.c +++ b/include/zobrist.c @@ -1,25 +1,38 @@ -#include "zobrist.h" +/* + This file is part of ctak. -// =================================================================== -// Globals -// =================================================================== + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. -static uint64_t *zobrist; + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Takwrap. If not, see <https://www.gnu.org/licenses/>. +*/ + +#include "zobrist.h" // =================================================================== -// Helpers +// Variables // =================================================================== +static uint64_t *zobrist; // =================================================================== // Exported method implementations // =================================================================== -int -zobrist_init(void) { +int zobrist_init(void) { if (zobrist != NULL) return EXIT_FAILURE; zobrist = malloc(sizeof(uint64_t)*board_size*board_size*(15*2*3)); + // TODO: trap errno + for (int k=0; k<board_size*board_size*(15*2*3); k++) { XORSHIFT64; zobrist[k] = RANDOM64; @@ -28,16 +41,14 @@ zobrist_init(void) { return EXIT_SUCCESS; } -void -zobrist_free(void) { +void zobrist_free(void) { if (zobrist != NULL) { free(zobrist); zobrist = NULL; } } -uint64_t -zobrist_compute(void) { +uint64_t zobrist_compute(void) { uint64_t hash = 0; for (uint8_t l=0; l<board_size*board_size; l++) { colour_stack_t c = colours[l]; |