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/* Test mpn_gcd_22.
Copyright 2019 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 <stdio.h>
#include <stdlib.h>
#include "gmp-impl.h"
#include "tests.h"
#ifndef COUNT
#define COUNT 150000
#endif
static void
one_test (mpz_srcptr a, mpz_srcptr b, mpz_srcptr ref)
{
mp_double_limb_t r = mpn_gcd_22 (mpz_getlimbn (a, 1), mpz_getlimbn (a, 0),
mpz_getlimbn (b, 1), mpz_getlimbn (b, 0));
if (r.d0 != mpz_getlimbn (ref, 0) || r.d1 != mpz_getlimbn (ref, 1))
{
gmp_fprintf (stderr,
"gcd_22 (0x%Zx, 0x%Zx) failed, got: g1 = 0x%Mx g0 = %Mx, ref: 0x%Zx\n",
a, b, r.d1, r.d0, ref);
abort();
}
}
int
main (int argc, char **argv)
{
mpz_t a, b, ref;
int count = COUNT;
int test;
gmp_randstate_ptr rands;
TESTS_REPS (count, argv, argc);
tests_start ();
rands = RANDS;
mpz_init (a);
mpz_init (b);
mpz_init (ref);
for (test = 0; test < count; test++)
{
mp_bitcnt_t asize = 1 + gmp_urandomm_ui(rands, 2*GMP_NUMB_BITS);
mp_bitcnt_t bsize = 1 + gmp_urandomm_ui(rands, 2*GMP_NUMB_BITS);
if (test & 1)
{
mpz_urandomb (a, rands, asize);
mpz_urandomb (b, rands, bsize);
}
else
{
mpz_rrandomb (a, rands, asize);
mpz_rrandomb (b, rands, bsize);
}
mpz_setbit (a, 0);
mpz_setbit (b, 0);
refmpz_gcd (ref, a, b);
one_test (a, b, ref);
}
mpz_clear (a);
mpz_clear (b);
mpz_clear (ref);
tests_end ();
return 0;
}
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