X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=para.h;h=08eb0ee6c20ab1a7779cc3f10de2b5fca094f44b;hp=c30e4710ee7ff9b2d725dee06b7ec4a378e1c820;hb=312eca6bf2f4b4d9ee9081e3c213883bfe194a96;hpb=b908fa3f5577d1f64bd8628d03a344aee2ca6fa1

diff --git a/para.h b/para.h
index c30e4710..08eb0ee6 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; \
@@ -211,6 +221,9 @@ _static_inline_ long int para_random(unsigned max)
 /** Used to avoid a shortcoming in vim's syntax highlighting. */
 #define EMBRACE(...) { __VA_ARGS__}
 
+/** A nice cup of STFU for Mr gcc. */
+#define do_nothing do {/* nothing */} while (0)
+
 /**
  * The sample formats supported by paraslash.
  *