88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
|
|
|
|
Copyright 2012, 2022, 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 <limits.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#include "testutils.h"
|
|
|
|
#define MAXBITS 400
|
|
#define COUNT 1000
|
|
|
|
void
|
|
testmain (int argc, char **argv)
|
|
{
|
|
unsigned i;
|
|
mpz_t b, e, m, res, ref;
|
|
|
|
mpz_init (b);
|
|
mpz_init (e);
|
|
mpz_init (m);
|
|
mpz_init (res);
|
|
mpz_init (ref);
|
|
|
|
for (i = 0; i < COUNT; i++)
|
|
{
|
|
mini_random_op4 (OP_POWM, MAXBITS, b, e, m, ref);
|
|
mpz_powm (res, b, e, m);
|
|
if (mpz_cmp (res, ref))
|
|
{
|
|
fprintf (stderr, "mpz_powm failed:\n");
|
|
dump ("b", b);
|
|
dump ("e", e);
|
|
dump ("m", m);
|
|
dump ("r", res);
|
|
dump ("ref", ref);
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
/* res >= 0, come from the random choices above, */
|
|
if (mpz_cmp_ui (res, 1) <= 0) /* if too small, */
|
|
mpz_add_ui (res, res, 9); /* add an arbitrary value. */
|
|
|
|
mpz_set_ui (e, 0);
|
|
/* Test the case m^0 (mod m), expect 1 (m is greater than 1). */
|
|
mpz_powm (res, res, e, res);
|
|
if (mpz_cmp_ui (res, 1) != 0)
|
|
{
|
|
fprintf (stderr, "mpz_powm failed: b=m, e=0; 1 expected,\n");
|
|
dump ("m", res);
|
|
dump ("r", res);
|
|
abort ();
|
|
}
|
|
|
|
/* Now res is 1. */
|
|
/* Test the case 1^0 (mod 1), expect 0. */
|
|
mpz_powm (res, res, e, res);
|
|
if (mpz_size (res))
|
|
{
|
|
fprintf (stderr, "mpz_powm failed: b=1, e=0, m=1; 0 expected,\n");
|
|
dump ("r", res);
|
|
abort ();
|
|
}
|
|
|
|
mpz_clear (b);
|
|
mpz_clear (e);
|
|
mpz_clear (m);
|
|
mpz_clear (res);
|
|
mpz_clear (ref);
|
|
}
|