19991201

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@573 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/bignum.c b/bignum.c
index 36a46af3fd..05df7c1683 100644
--- a/bignum.c
+++ b/bignum.c
@@ -20,7 +20,7 @@ typedef unsigned short USHORT;
 #define BIGRAD (1L << BITSPERDIG)
 #define DIGSPERINT ((unsigned int)(sizeof(long)/sizeof(short)))
 #define BIGUP(x) ((unsigned long)(x) << BITSPERDIG)
-#define BIGDN(x) (((x)<0) ? ~((~(x))>>BITSPERDIG) : (x)>>BITSPERDIG)
+#define BIGDN(x) RSHIFT(x,BITSPERDIG)
 #define BIGLO(x) ((USHORT)((x) & (BIGRAD-1)))
 
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