tests/test-libgmp-mpq.c

   1 /* Test of libgmp or its mini-mpq substitute.
   2    Copyright (C) 2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <gmp.h>
  21
  22 #include <limits.h>
  23 #include <string.h>
  24
  25 #include "macros.h"
  26
  27 int
  28 main ()
  29 {
  30   /* A simple sanity check that 2/3 + 2/3 = 4/3.  */
  31   static mp_limb_t const twobody[] = { 2 };
  32   static mp_limb_t const threebody[] = { 3 };
  33   static mpz_t const two = MPZ_ROINIT_N ((mp_limb_t *) twobody, 1);
  34   static mpz_t const three = MPZ_ROINIT_N ((mp_limb_t *) threebody, 1);
  35   ASSERT (mpz_fits_slong_p (two));
  36   ASSERT (mpz_get_si (two) == 2);
  37   ASSERT (mpz_fits_slong_p (three));
  38   ASSERT (mpz_get_si (three) == 3);
  39
  40   mpq_t q;
  41   mpq_init (q);
  42   mpz_set (mpq_numref (q), two);
  43   mpz_set (mpq_denref (q), three);
  44   mpq_add (q, q, q);
  45   ASSERT (mpz_fits_slong_p (mpq_numref (q)));
  46   ASSERT (mpz_get_si (mpq_numref (q)) == 4);
  47   ASSERT (mpz_fits_slong_p (mpq_denref (q)));
  48   ASSERT (mpz_get_si (mpq_denref (q)) == 3);
  49   mpq_clear (q);
  50
  51   return test_exit_status;
  52 }