Likely a test to optimize when dest and src are the same

(which is very likely inside MPFR).


git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@2930 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 1 insertions, 1 deletions

diff --git a/mul_2ui.c b/mul_2ui.c
index f8de72d74..106ebdb9d 100644
--- a/mul_2ui.c
+++ b/mul_2ui.c
@@ -26,7 +26,7 @@ mpfr_mul_2ui (mpfr_ptr y, mpfr_srcptr x, unsigned long int n, mp_rnd_t rnd_mode)
 {
   int inexact;
 
-  inexact = y != x ? mpfr_set (y, x, rnd_mode) : 0;
+  inexact = MPFR_UNLIKELY(y != x) ? mpfr_set (y, x, rnd_mode) : 0;
 
   if (MPFR_LIKELY( MPFR_IS_PURE_FP(y)) )
     {