r5689 undone: some casts were incorrect (mp_exp_t may be greater than

mp_prec_t, so that casting a mp_exp_t into a mp_prec_t can introduce a
bug). There may be bugs in some cases, but the casts fix the symptom,
not the bug (unless one casts the unsigned type to a signed type that
is *strictly* larger, which is not possible here).

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@5690 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 1 insertions, 2 deletions

diff --git a/tanh.c b/tanh.c
index 723d1e52b..cc009fc14 100644
--- a/tanh.c
+++ b/tanh.c
@@ -126,8 +126,7 @@ mpfr_tanh (mpfr_ptr y, mpfr_srcptr xt , mp_rnd_t rnd_mode)
       d = MAX(3, d + 1);
       err = Nt - (d + 1);
 
-      if (MPFR_LIKELY ((d <= (mp_exp_t) (Nt / 2))
-                       && MPFR_CAN_ROUND (t, err, Ny, rnd_mode)))
+      if (MPFR_LIKELY ((d <= Nt / 2) && MPFR_CAN_ROUND (t, err, Ny, rnd_mode)))
         {
           inexact = mpfr_set4 (y, t, rnd_mode, sign);
           break;