fixed bug: wrong sign when SIGN(a)<0 at beginning

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@125 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 1 insertions, 1 deletions

diff --git a/mul.c b/mul.c
index 909a6568f..51778991b 100644
--- a/mul.c
+++ b/mul.c
@@ -160,7 +160,7 @@ printf("*ap=%u\n",*ap);
        else mpn_lshift(cp, ap, an, 1); 
      }
    }
-  if (sign_product<0) CHANGE_SIGN(a);
+  if (sign_product * SIGN(a)<0) CHANGE_SIGN(a);
   TMP_FREE(marker); 
 #ifdef DEBUG2
 printf("b*c="); mpfr_print_raw(a); putchar('\n');