X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=include%2Fcommon.h;h=1e4c07a1af9340a0ba7b7cc67ff88b6d217f2768;hb=bdd26d4dde3b3d3180619cc81622081025ca6cb5;hp=99c43829ec755b5a4da3dca641fdf6f277909ac5;hpb=65f9a2c33e571f7f4cda2d7bf147a7ed1bb5a7cd;p=smdp.git

diff --git a/include/common.h b/include/common.h
index 99c4382..1e4c07a 100644
--- a/include/common.h
+++ b/include/common.h
@@ -26,6 +26,23 @@
  *
  */
 
+#if defined( __STDC__ )  // for standard C compiler
+#if __STDC_VERSION__ >= 199901L    // for C99 and later
+#include <stdbool.h>
+#else    // __STDC_VERSION__ >= 199901L
+#if !defined( bool )
+typedef enum {
+    false = 0,
+    true
+} bool;
+#endif   // !defined( bool )
+#endif   // __STDC_VERSION__ >= 199901L
+#else    // defined( __STDC__ )
+#define bool    int
+#define true    1
+#define false   0
+#endif   // defined( __STDC__ )
+
 #define MAX(a, b) ({ typeof(a) _a = a; typeof(b) _b = b; _a > _b? _a : _b; })
 #define MIN(a, b) ({ typeof(a) _a = a; typeof(b) _b = b; _a < _b? _a : _b; })