common.h in chess-0.3.2

- old
+ new

@@ -11,14 +11,20 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
 
-// Macros
+// Boolean definition
+
+#ifndef RUBY_BACKWARD2_BOOL_H
 #define FALSE 0
 #define TRUE 1
+typedef unsigned short bool;
+#endif
 
+// Macros
+
 #define A1 0
 #define B1 1
 #define C1 2
 #define D1 3
 #define E1 4
@@ -92,11 +98,9 @@
 
 #define WHITE_WON 0
 #define BLACK_WON 1
 #define DRAW 2
 #define IN_PROGRESS 3
-
-typedef unsigned short bool;
 
 char square_to_file (int square);
 char square_to_rank (int square);
 int coord_to_square (const char *coord);
 char* square_to_coord (int square);