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| author | zimmerma <zimmerma@280ebfd0-de03-0410-8827-d642c229c3f4> | 2018-09-04 14:50:57 +0000 |
|---|---|---|
| committer | zimmerma <zimmerma@280ebfd0-de03-0410-8827-d642c229c3f4> | 2018-09-04 14:50:57 +0000 |
| commit | 4e9af690f7589ba1e17e07cd5a6de6f2c25e1188 (patch) | |
| tree | 44bd050dd6bca294aef5e564a02861eb0dec393f | |
| parent | bc437ed852b783752a801b87601de1690ce2aa6f (diff) | |
| download | mpfr-4e9af690f7589ba1e17e07cd5a6de6f2c25e1188.tar.gz | |
[tests/tset_z_exp.c] fixed infinite loop in test code for limb < mpfr_exp_t
git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@13127 280ebfd0-de03-0410-8827-d642c229c3f4
| -rw-r--r-- | tests/tset_z_exp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/tset_z_exp.c b/tests/tset_z_exp.c index cd3818cf3..18c80951f 100644 --- a/tests/tset_z_exp.c +++ b/tests/tset_z_exp.c @@ -22,11 +22,24 @@ http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., #include "mpfr-test.h" +/* generate a random exponent in [__gmpfr_emin, __gmpfr_emax-1] */ static mpfr_exp_t randexp (void) { +#if defined(MPFR_LONG_WITHIN_LIMB) && _MPFR_EXP_FORMAT <= 3 + /* if _MPFR_EXP_FORMAT <= 3, mpfr_exp_t <= long, thus since a long fits in + a limb, we can generate the whole range [emin, emax] */ return (mpfr_exp_t) (randlimb () % (__gmpfr_emax - __gmpfr_emin)) + __gmpfr_emin; +#else + mpfr_exp_t emax = MPFR_EMAX_MAX, e = 0; + while (emax != 0) + { + e = (e << GMP_NUMB_BITS) + randlimb (); + emax >>= GMP_NUMB_BITS; + } + return (mpfr_exp_t) e % (__gmpfr_emax - __gmpfr_emin) + __gmpfr_emin; +#endif } static void |