src/sqr.c: Partly revert r321, error of 3 bits in u.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpc/trunk@322 211d60ee-9f03-0410-a15a-8952a2c7a4e4

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sqr.c b/src/sqr.c
index 80ae2fd..8a29c86 100644
--- a/src/sqr.c
+++ b/src/sqr.c
@@ -160,7 +160,7 @@ mpc_sqr (mpc_ptr rop, mpc_srcptr op, mpc_rnd_t rnd)
       else if (mpfr_sgn (u) * mpfr_sgn (v) > 0)
         {
           inexact |= mpfr_mul (u, u, v, GMP_RNDU); /* error 5 */
-          ok = !inexact | mpfr_can_round (u, prec - 5, GMP_RNDU, GMP_RNDZ,
+          ok = !inexact | mpfr_can_round (u, prec - 3, GMP_RNDU, GMP_RNDZ,
                MPFR_PREC (MPC_RE (rop)) + (MPC_RND_RE (rnd) == GMP_RNDN));
           if (ok)
             {
@@ -173,7 +173,7 @@ mpc_sqr (mpc_ptr rop, mpc_srcptr op, mpc_rnd_t rnd)
       else
         {
           inexact |= mpfr_mul (u, u, v, GMP_RNDD); /* error 5 */
-          ok = !inexact | mpfr_can_round (u, prec - 5, GMP_RNDD, GMP_RNDZ,
+          ok = !inexact | mpfr_can_round (u, prec - 3, GMP_RNDD, GMP_RNDZ,
                MPFR_PREC (MPC_RE (rop)) + (MPC_RND_RE (rnd) == GMP_RNDN));
           if (ok)
             {