[acos.c] fixed problem with GMP_RNDA (should be MPFR_RNDA, and code was wrong)

git-svn-id: svn://scm.gforge.inria.fr/svn/mpc/trunk@734 211d60ee-9f03-0410-a15a-8952a2c7a4e4

1 files changed, 1 insertions, 4 deletions

diff --git a/src/acos.c b/src/acos.c
index a242519..1e6c8fb 100644
--- a/src/acos.c
+++ b/src/acos.c
@@ -188,10 +188,7 @@ mpc_acos (mpc_ptr rop, mpc_srcptr op, mpc_rnd_t rnd)
   else
     rnd_im = rnd_im == GMP_RNDU ? GMP_RNDD
       : rnd_im == GMP_RNDD ? GMP_RNDU
-#if MPFR_VERSION_MAJOR >= 3
-      : rnd_im == GMP_RNDA ? GMP_RNDZ
-#endif
-      : rnd_im;
+      : rnd_im; /* both RNDZ and RNDA map to themselves for -asin(z) */
   rnd1 = RNDC(GMP_RNDN, rnd_im);
   mpfr_init2 (pi_over_2, p);
   for (;;)