X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=para.h;h=f095a6aa385d2f717048f1e25e15741a15632617;hp=c5e12fe6da3ef864bdc16bb0eaa178a8b5965cee;hb=1199398;hpb=f7527caf231e06672f6079026eeb338a68e69474

diff --git a/para.h b/para.h
index c5e12fe6..f095a6aa 100644
--- a/para.h
+++ b/para.h
@@ -165,6 +165,16 @@ _static_inline_ long int para_random(unsigned max)
 	return ((max + 0.0) * (random() / (RAND_MAX + 1.0)));
 }
 
+/** Round up x to next multiple of y. */
+#define ROUND_UP(x, y) ({ \
+	const typeof(y) _divisor = y; \
+	((x) + _divisor - 1) / _divisor * _divisor; })
+
+/** Round down x to multiple of y. */
+#define ROUND_DOWN(x, y) ({ \
+	const typeof(y) _divisor = y; \
+	(x) / _divisor * _divisor; })
+
 /** Divide and round up to next integer. */
 #define DIV_ROUND_UP(x, y) ({ \
 	typeof(y) _divisor = y; \