Add support for FAST_COMPUTE_IS_SMALL_INPUT.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@3552 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 3 insertions, 0 deletions

diff --git a/sinh.c b/sinh.c
index decee31f3..b871d049c 100644
--- a/sinh.c
+++ b/sinh.c
@@ -56,6 +56,9 @@ mpfr_sinh (mpfr_ptr y, mpfr_srcptr xt, mp_rnd_t rnd_mode)
 	}
     }
 
+  /* sinh(x) = x + x^3/6 + ... so the error is < 2^(3*EXP(x)-2) */
+  MPFR_FAST_COMPUTE_IF_SMALL_INPUT (y, xt, -2*MPFR_GET_EXP(xt)+2,1,rnd_mode, );
+
   MPFR_TMP_INIT_ABS (x, xt);
 
   {