X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=para.h;h=3f2da13a859782ba8c5a014d6e6511ecd97d1f28;hp=a39ed97df45502a0f93dcd8217cf5d9d6e792c78;hb=3062b9da4f71ea236f46efda9a51add1b15cda1a;hpb=d9e608504d9d0e71380907559546e211c4f0ce55

diff --git a/para.h b/para.h
index a39ed97d..3f2da13a 100644
--- a/para.h
+++ b/para.h
@@ -30,12 +30,24 @@
 /** used in various contexts */
 #define MAXLINE 255
 
-/** compute the minimum of \a a and \a b */
-#define PARA_MIN(a,b) ((a) < (b) ? (a) : (b))
-/** compute the maximum of \a a and \a b */
-#define PARA_MAX(a,b) ((a) > (b) ? (a) : (b))
-/** compute the absolute value of \a a */
-#define PARA_ABS(a) ((a) > 0 ? (a) : -(a))
+/** Compute the minimum of \a x and \a y. */
+#define PARA_MIN(x, y) ({ \
+	typeof(x) _min1 = (x); \
+	typeof(y) _min2 = (y); \
+	(void) (&_min1 == &_min2); \
+	_min1 < _min2 ? _min1 : _min2; })
+
+/** Compute the maximum of \a x and \a y. */
+#define PARA_MAX(x, y) ({ \
+	typeof(x) _max1 = (x); \
+	typeof(y) _max2 = (y); \
+	(void) (&_max1 == &_max2); \
+	_max1 < _max2 ? _max1 : _max2; })
+
+/** Compute the absolute value of \a x. */
+#define PARA_ABS(x) ({ \
+	typeof(x) _x = (x); \
+	_x > 0? _x : -_x; })
 
 /** debug loglevel, gets really noisy */
 #define DEBUG 1