Fixed MPFR_INT_CEIL_LOG2 (in mpfr-impl.h) and __gmpfr_int_ceil_log2

(in int_ceil_log2.c) when the argument is a power of 2, and added a
test (new test file tests/tinternals.c). This made a bug appear in
div_ui.c and mul_ui.c; fixed that too.


git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@3914 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 1 insertions, 1 deletions

diff --git a/div_ui.c b/div_ui.c
index 705c2d3db..fda59e8d7 100644
--- a/div_ui.c
+++ b/div_ui.c
@@ -77,7 +77,7 @@ mpfr_div_ui (mpfr_ptr y, mpfr_srcptr x, unsigned long int u, mp_rnd_t rnd_mode)
         return mpfr_set (y, x, rnd_mode);
     }
   else if (MPFR_UNLIKELY (IS_POW2 (u)))
-    return mpfr_div_2si (y, x, MPFR_INT_CEIL_LOG2 (u)-1, rnd_mode);
+    return mpfr_div_2si (y, x, MPFR_INT_CEIL_LOG2 (u), rnd_mode);
 
   MPFR_CLEAR_FLAGS (y);