Added license information!

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];