Added side effect free min and max macros.

2009-09-01 12:50:50 +02:00
parent 8f68b72424
commit e822fc576a
1 changed files with 9 additions and 2 deletions
@@ -72,12 +72,19 @@
 /**
 * Macro gives back larger of two values.
 */
-#define max(x,y) ((x) > (y) ? (x):(y))
+#define max(x,y) ({ \
+	typeof(x) _x = (x); \
+	typeof(y) _y = (y); \
+	_x > _y ? _x : _y; })
+

 /**
 * Macro gives back smaller of two values.
 */
-#define min(x,y) ((x) < (y) ? (x):(y))
+#define min(x,y) ({ \
+	typeof(x) _x = (x); \
+	typeof(y) _y = (y); \
+	_x < _y ? _x : _y; })

 /**
 * Call destructor of an object, if object != NULL