[src/agm.c] Avoid a potential integer overflow with huge precisions.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@13795 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 1 insertions, 1 deletions

diff --git a/src/agm.c b/src/agm.c
index a910d3a3b..a571ebefb 100644
--- a/src/agm.c
+++ b/src/agm.c
@@ -228,7 +228,7 @@ mpfr_agm (mpfr_ptr r, mpfr_srcptr op2, mpfr_srcptr op1, mpfr_rnd_t rnd_mode)
           mpfr_add (vf, u, v, MPFR_RNDN);  /* No overflow? */
           mpfr_div_2ui (vf, vf, 1, MPFR_RNDN);
           /* See proof in algorithms.tex */
-          if (4*eq > p)
+          if (eq > p / 4)
             {
               mpfr_t w;
               MPFR_BLOCK_DECL (flags3);