diff options
Diffstat (limited to 'gmp/tests/mpq/t-get_d.c')
| -rw-r--r-- | gmp/tests/mpq/t-get_d.c | 77 |
1 files changed, 27 insertions, 50 deletions
diff --git a/gmp/tests/mpq/t-get_d.c b/gmp/tests/mpq/t-get_d.c index aa848e029c..f116189012 100644 --- a/gmp/tests/mpq/t-get_d.c +++ b/gmp/tests/mpq/t-get_d.c @@ -1,22 +1,22 @@ /* Test mpq_get_d and mpq_set_d -Copyright 1991, 1993, 1994, 1996, 2000-2003, 2012, 2013 Free Software +Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. -This file is part of the GNU MP Library test suite. +This file is part of the GNU MP Library. -The GNU MP Library test suite is free software; you can redistribute it -and/or modify it under the terms of the GNU General Public License as -published by the Free Software Foundation; either version 3 of the License, -or (at your option) any later version. +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 3 of the License, or (at your +option) any later version. -The GNU MP Library test suite is distributed in the hope that it will be -useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General -Public License for more details. +The GNU MP Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +License for more details. -You should have received a copy of the GNU General Public License along with -the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */ +You should have received a copy of the GNU Lesser General Public License +along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ #include <stdio.h> #include <stdlib.h> @@ -31,7 +31,7 @@ the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */ /* VAX D floats only have an 8 bit signed exponent, so anything 2^128 or bigger will overflow, that being 4 limbs. */ -#if defined (__vax) || defined (__vax__) && SIZE > 4 +#if defined (__vax__) && SIZE > 4 #undef SIZE #define SIZE 4 #define EPSIZE 3 @@ -39,7 +39,7 @@ the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */ #define EPSIZE SIZE #endif -void dump (mpq_t); +void dump __GMP_PROTO ((mpq_t)); void check_monotonic (int argc, char **argv) @@ -153,63 +153,40 @@ my_ldexp (double d, int e) } } -#define MAXEXP 500 - -#if defined (__vax) || defined (__vax__) -#undef MAXEXP -#define MAXEXP 30 -#endif - void check_random (int argc, char **argv) { - gmp_randstate_ptr rands = RANDS; - - double d; + double d, d2, nd, dd; mpq_t q; - mpz_t a, t; - int exp; - + mp_limb_t rp[LIMBS_PER_DOUBLE + 1]; int test, reps = 100000; + int i; if (argc == 2) reps = 100 * atoi (argv[1]); mpq_init (q); - mpz_init (a); - mpz_init (t); for (test = 0; test < reps; test++) { - mpz_rrandomb (a, rands, 53); - mpz_urandomb (t, rands, 32); - exp = mpz_get_ui (t) % (2*MAXEXP) - MAXEXP; - - d = my_ldexp (mpz_get_d (a), exp); + mpn_random2 (rp, LIMBS_PER_DOUBLE + 1); + d = 0.0; + for (i = LIMBS_PER_DOUBLE - 1; i >= 0; i--) + d = d * MP_BASE_AS_DOUBLE + rp[i]; + d = my_ldexp (d, (int) (rp[LIMBS_PER_DOUBLE] % 1000) - 500); mpq_set_d (q, d); - /* Check that n/d = a * 2^exp, or - d*a 2^{exp} = n */ - mpz_mul (t, a, mpq_denref (q)); - if (exp > 0) - mpz_mul_2exp (t, t, exp); - else - { - if (!mpz_divisible_2exp_p (t, -exp)) - goto fail; - mpz_div_2exp (t, t, -exp); - } - if (mpz_cmp (t, mpq_numref (q)) != 0) + nd = mpz_get_d (mpq_numref (q)); + dd = mpz_get_d (mpq_denref (q)); + d2 = nd / dd; + if (d != d2) { - fail: printf ("ERROR (check_random test %d): bad mpq_set_d results\n", test); printf ("%.16g\n", d); - gmp_printf ("%Qd\n", q); + printf ("%.16g\n", d2); abort (); } } mpq_clear (q); - mpz_clear (t); - mpz_clear (a); } void |