[div.c] revert to r661

git-svn-id: svn://scm.gforge.inria.fr/svn/mpc/trunk@665 211d60ee-9f03-0410-a15a-8952a2c7a4e4

1 files changed, 5 insertions, 2 deletions

diff --git a/src/div.c b/src/div.c
index b3e6ad3..bea659f 100644
--- a/src/div.c
+++ b/src/div.c
@@ -221,8 +221,11 @@ mpc_div (mpc_ptr a, mpc_srcptr b, mpc_srcptr c, mpc_rnd_t rnd)
 
       if (overlap)
         {
-          mpfr_swap (MPC_RE(a), MPC_RE(tmpa));
-          mpfr_swap (MPC_IM(a), MPC_IM(tmpa));
+          /* Note: we could use mpc_swap here, but this might cause problems
+             if a and tmpa have been allocated using different methods, since
+             it will swap the significands of a and tmpa. See http://
+         lists.gforge.inria.fr/pipermail/mpc-discuss/2009-August/000504.html */
+          mpc_set (a, tmpa, MPC_RNDNN); /* exact */
           mpc_clear (tmpa);
         }