87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/* Test modlimb_invert.
|
|
|
|
Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
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 2.1 of the License, or (at your
|
|
option) any later version.
|
|
|
|
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 Lesser General Public License
|
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "gmp.h"
|
|
#include "gmp-impl.h"
|
|
#include "longlong.h"
|
|
#include "tests.h"
|
|
|
|
|
|
void
|
|
one (mp_limb_t n)
|
|
{
|
|
mp_limb_t inv, prod;
|
|
|
|
modlimb_invert (inv, n);
|
|
prod = (inv * n) & GMP_NUMB_MASK;
|
|
if (prod != 1)
|
|
{
|
|
printf ("modlimb_invert wrong\n");
|
|
mp_limb_trace (" n ", n);
|
|
mp_limb_trace (" got ", inv);
|
|
mp_limb_trace (" product ", prod);
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
void
|
|
some (void)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 10000; i++)
|
|
one (refmpn_random_limb () | 1);
|
|
}
|
|
|
|
void
|
|
all (void)
|
|
{
|
|
mp_limb_t n;
|
|
|
|
n = 1;
|
|
do {
|
|
one (n);
|
|
n += 2;
|
|
} while (n != 1);
|
|
}
|
|
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
tests_start ();
|
|
|
|
if (argc >= 2 && strcmp (argv[1], "-a") == 0)
|
|
{
|
|
/* it's feasible to run all values on a 32-bit limb, but not a 64-bit */
|
|
all ();
|
|
}
|
|
else
|
|
{
|
|
some ();
|
|
}
|
|
|
|
tests_end ();
|
|
exit (0);
|
|
}
|