add license information & rename typedefs

src/board.h

@@ -1,26 +1,35 @@
+/* board.h - board definitions.
+ *
+ * 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.htmlL>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
+ *
+ */
+
 #ifndef BOARD_H
 #define BOARD_H
 
 #include <stdint.h>
-
-/* ffff rrrr */
-typedef unsigned char SQUARE;
-#define SQUARE_F(s) ((s) >> 4)
-#define SQUARE_R(s) ((s) & 0x0f)
-#define SET_F(s, f) ((s) &= 0x0f, (s) |= (f)<<4)
-#define SET_R(s, r) ((s) &= 0xf0, (s) |= (r))
+#include "chessdefs.h"
 
 typedef struct {
-    unsigned char piece;
+    piece_t piece;
     //struct piece *s_piece;
-} BOARD[8*8*2];                                    /* 0x88 board */
+} board_t[8*8*2];                                 /* 0x88 board */
 
-/* definitions for 0x88 representation */
-#define SQ88(f, r) (16 * (r) + (f))
-#define FILE88(s)  ((s) & 7)
-#define RANK88(s)  ((s) >> 8)
+/* definitions for 0x88 representation
+ */
+#define SQ88(f, r)   (16 * (r) + (f))             /* from rank,file to sq88 */
+#define FILE88(s)    ((s) & 7)                    /* from sq88 to file */
+#define RANK88(s)    ((s) >> 8)                   /* from sq88 to rank */
 
-/* piece notation */
+/* piece human notation
+ */
 #define CHAR_EMPTY   ' '
 #define CHAR_PAWN    'P'
 #define CHAR_KNIGHT  'N'
@@ -29,9 +38,13 @@ typedef struct {
 #define CHAR_QUEEN   'Q'
 #define CHAR_KING    'K'
 
-#define C2FILE(c)  (tolower(c)-'a')
-#define C2RANK(c) (tolower(c)-'1')
-#define FILE2C(c)  ((c)+'a')
-#define RANK2C(c) ((c)+'1')
+/* from human to machine
+ */
+#define C2FILE(c)    (tolower(c) - 'a')
+#define C2RANK(c)    (tolower(c) - '1')
+/* from machine to human
+ */
+#define FILE2C(f)    ((f) + 'a')
+#define RANK2C(r)    ((r) + '1')
 
 #endif