61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* Test mpq_inv (and set/get_num/den).
|
|
|
|
Copyright 2012 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library test suite.
|
|
|
|
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 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.
|
|
|
|
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/. */
|
|
|
|
#include "gmp-impl.h"
|
|
#include "tests.h"
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
mpq_t a, b;
|
|
mpz_t m, n;
|
|
const char* s = "-420000000000000000000000";
|
|
|
|
tests_start ();
|
|
|
|
mpq_inits (a, b, (mpq_ptr)0);
|
|
mpz_inits (m, n, (mpz_ptr)0);
|
|
|
|
mpz_set_ui (m, 13);
|
|
mpq_set_den (a, m);
|
|
mpz_set_str (m, s, 0);
|
|
mpq_set_num (a, m);
|
|
MPQ_CHECK_FORMAT (a);
|
|
mpq_inv (b, a);
|
|
MPQ_CHECK_FORMAT (b);
|
|
mpq_get_num (n, b);
|
|
ASSERT_ALWAYS (mpz_cmp_si (n, -13) == 0);
|
|
mpq_neg (b, b);
|
|
mpq_inv (a, b);
|
|
MPQ_CHECK_FORMAT (a);
|
|
mpq_inv (b, b);
|
|
MPQ_CHECK_FORMAT (b);
|
|
mpq_get_den (n, b);
|
|
ASSERT_ALWAYS (mpz_cmp_ui (n, 13) == 0);
|
|
mpq_get_num (n, a);
|
|
mpz_add (n, n, m);
|
|
ASSERT_ALWAYS (mpz_sgn (n) == 0);
|
|
|
|
mpq_clears (a, b, (mpq_ptr)0);
|
|
mpz_clears (m, n, (mpz_ptr)0);
|
|
|
|
tests_end ();
|
|
return 0;
|
|
}
|