Patch for the case b = 0 or c = 0.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@1087 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 5 insertions, 0 deletions

diff --git a/mul_ui.c b/mul_ui.c
index e92a79155..64ace5875 100644
--- a/mul_ui.c
+++ b/mul_ui.c
@@ -60,6 +60,11 @@ mpfr_mul_ui(y, x, u, rnd_mode)
       else { MPFR_SET_NAN(y); return; }
     }
 
+  if (MPFR_IS_ZERO(x) || !u) 
+    {
+      MPFR_CLEAR_FLAGS(y); MPFR_SET_ZERO(y); return; 
+    }
+
   MPFR_CLEAR_FLAGS(y); 
 
   TMP_MARK(marker);