diff options
Diffstat (limited to 'tests/tmul_2exp.c')
| -rw-r--r-- | tests/tmul_2exp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/tmul_2exp.c b/tests/tmul_2exp.c index 511ef540d..645210f72 100644 --- a/tests/tmul_2exp.c +++ b/tests/tmul_2exp.c @@ -116,6 +116,19 @@ main (int argc, char *argv[]) } } + if (MPFR_EXP_MAX >= LONG_MAX/2 && MPFR_EXP_MIN <= LONG_MAX/2-LONG_MAX-1) + { + mpfr_set_ui (w, 1, GMP_RNDN); + mpfr_mul_2ui (w, w, LONG_MAX/2, GMP_RNDZ); + mpfr_div_2ui (w, w, LONG_MAX+1, GMP_RNDZ); + mpfr_mul_2ui (w, w, LONG_MAX+1-LONG_MAX/2, GMP_RNDZ); + if (!mpfr_cmp_ui (w, 1)) + { + printf ("Underflow LONG_MAX error!\n"); + exit (1); + } + } + mpfr_clears (w, z, NULL); tests_end_mpfr (); |