X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=includes%2FRts.h;h=ec84ed9671bff494da24861d42f360ea7c6bfc4c;hb=5f15c042606033ce3b953837fc4a2f76674c4839;hp=5aff979fd914cdab966a49d44ada802f194f88f0;hpb=e9fdcd7b7d8ae466d83ce9f77f34e9b62b2a4fa7;p=ghc-hetmet.git

diff --git a/includes/Rts.h b/includes/Rts.h
index 5aff979..ec84ed9 100644
--- a/includes/Rts.h
+++ b/includes/Rts.h
@@ -51,7 +51,9 @@ extern "C" {
  * We often want to know the size of something in units of an
  * StgWord... (rounded up, of course!)
  */
-#define sizeofW(t) ((sizeof(t)+sizeof(W_)-1)/sizeof(W_))
+#define ROUNDUP_BYTES_TO_WDS(n) (((n) + sizeof(W_) - 1) / sizeof(W_))
+
+#define sizeofW(t) ROUNDUP_BYTES_TO_WDS(sizeof(t))
 
 /* 
  * It's nice to be able to grep for casts