/* Test mpz_addmul, mpz_addmul_ui, mpz_submul, mpz_submul_ui.
Copyright 2001 , 2002 , 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gmp-impl.h"
#include "tests.h"
#define M GMP_NUMB_MAX
void
check_one_inplace (mpz_srcptr w, mpz_srcptr y)
{
mpz_t want, got;
mpz_init (want);
mpz_init (got);
mpz_mul (want, w, y);
mpz_add (want, w, want);
mpz_set (got, w);
mpz_addmul (got, got, y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_addmul inplace fail\n" );
fail:
mpz_trace (
"w" , w);
mpz_trace (
"y" , y);
mpz_trace (
"want" , want);
mpz_trace (
"got " , got);
abort ();
}
mpz_mul (want, w, y);
mpz_sub (want, w, want);
mpz_set (got, w);
mpz_submul (got, got, y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_submul inplace fail\n" );
goto fail;
}
mpz_clear (want);
mpz_clear (got);
}
void
check_one_ui_inplace (mpz_ptr w,
unsigned long y)
{
mpz_t want, got;
mpz_init (want);
mpz_init (got);
mpz_mul_ui (want, w, (
unsigned long ) y);
mpz_add (want, w, want);
mpz_set (got, w);
mpz_addmul_ui (got, got, (
unsigned long ) y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_addmul_ui fail\n" );
fail:
mpz_trace (
"w" , w);
printf (
"y=0x%lX %lu\n" , y, y);
mpz_trace (
"want" , want);
mpz_trace (
"got " , got);
abort ();
}
mpz_mul_ui (want, w, y);
mpz_sub (want, w, want);
mpz_set (got, w);
mpz_submul_ui (got, got, y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_submul_ui fail\n" );
goto fail;
}
mpz_clear (want);
mpz_clear (got);
}
void
check_all_inplace (mpz_ptr w, mpz_ptr y)
{
int wneg, yneg;
MPZ_CHECK_FORMAT (w);
MPZ_CHECK_FORMAT (y);
for (wneg =
0 ; wneg <
2 ; wneg++)
{
for (yneg =
0 ; yneg <
2 ; yneg++)
{
check_one_inplace (w, y);
if (mpz_fits_ulong_p (y))
check_one_ui_inplace (w, mpz_get_ui (y));
mpz_neg (y, y);
}
mpz_neg (w, w);
}
}
void
check_one (mpz_srcptr w, mpz_srcptr x, mpz_srcptr y)
{
mpz_t want, got;
mpz_init (want);
mpz_init (got);
mpz_mul (want, x, y);
mpz_add (want, w, want);
mpz_set (got, w);
mpz_addmul (got, x, y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_addmul fail\n" );
fail:
mpz_trace (
"w" , w);
mpz_trace (
"x" , x);
mpz_trace (
"y" , y);
mpz_trace (
"want" , want);
mpz_trace (
"got " , got);
abort ();
}
mpz_sub (want, want, w);
mpz_sub (want, w, want);
mpz_set (got, w);
mpz_submul (got, x, y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_submul fail\n" );
goto fail;
}
mpz_clear (want);
mpz_clear (got);
}
void
check_sqr (mpz_srcptr w, mpz_srcptr x)
{
mpz_t want, got;
mpz_init (want);
mpz_init (got);
mpz_mul (want, x, x);
mpz_add (want, w, want);
mpz_set (got, w);
mpz_addmul (got, x, x);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_addmul xx fail\n" );
sqrfail:
mpz_trace (
"w" , w);
mpz_trace (
"x" , x);
mpz_trace (
"want" , want);
mpz_trace (
"got " , got);
abort ();
}
mpz_sub (want, want, w);
mpz_sub (want, w, want);
mpz_set (got, w);
mpz_submul (got, x, x);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_submul xx fail\n" );
goto sqrfail;
}
mpz_clear (want);
mpz_clear (got);
}
void
check_one_ui (mpz_ptr w, mpz_ptr x,
unsigned long y)
{
mpz_t want, got;
mpz_init (want);
mpz_init (got);
mpz_mul_ui (want, x, (
unsigned long ) y);
mpz_add (want, w, want);
mpz_set (got, w);
mpz_addmul_ui (got, x, (
unsigned long ) y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_addmul_ui fail\n" );
fail:
mpz_trace (
"w" , w);
mpz_trace (
"x" , x);
printf (
"y=0x%lX %lu\n" , y, y);
mpz_trace (
"want" , want);
mpz_trace (
"got " , got);
abort ();
}
mpz_mul_ui (want, x, y);
mpz_sub (want, w, want);
mpz_set (got, w);
mpz_submul_ui (got, x, y);
MPZ_CHECK_FORMAT (got);
if (mpz_cmp (want, got) !=
0 )
{
printf (
"mpz_submul_ui fail\n" );
goto fail;
}
mpz_clear (want);
mpz_clear (got);
}
void
check_all (mpz_ptr w, mpz_ptr x, mpz_ptr y)
{
int swap, wneg, xneg, yneg;
MPZ_CHECK_FORMAT (w);
MPZ_CHECK_FORMAT (x);
MPZ_CHECK_FORMAT (y);
for (swap =
0 ; swap <
2 ; swap++)
{
for (wneg =
0 ; wneg <
2 ; wneg++)
{
for (xneg =
0 ; xneg <
2 ; xneg++)
{
for (yneg =
0 ; yneg <
2 ; yneg++)
{
check_one (w, x, y);
if (mpz_fits_ulong_p (y))
check_one_ui (w, x, mpz_get_ui (y));
mpz_neg (y, y);
}
check_sqr (w, x);
mpz_neg (x, x);
}
mpz_neg (w, w);
}
mpz_swap (x, y);
}
}
void
check_data_inplace_ui (
void )
{
static const struct {
mp_limb_t w[
6 ];
unsigned long y;
} data[] = {
{ {
0 },
0 },
{ {
0 },
1 },
{ {
1 },
1 },
{ {
2 },
1 },
{ {
123 },
1 },
{ {
123 }, ULONG_MAX },
{ { M },
1 },
{ { M }, ULONG_MAX },
{ {
123 ,
456 },
1 },
{ { M, M },
1 },
{ {
123 ,
456 }, ULONG_MAX },
{ { M, M }, ULONG_MAX },
{ {
123 ,
456 ,
789 },
1 },
{ { M, M, M },
1 },
{ {
123 ,
456 ,
789 }, ULONG_MAX },
{ { M, M, M }, ULONG_MAX },
};
mpz_t w, y;
int i;
mpz_init (w);
mpz_init (y);
for (i =
0 ; i < numberof (data); i++)
{
mpz_set_n (w, data[i].w, (mp_size_t) numberof(data[i].w));
mpz_set_ui (y, data[i].y);
check_all_inplace (w, y);
}
mpz_clear (w);
mpz_clear (y);
}
void
check_data (
void )
{
static const struct {
mp_limb_t w[
6 ];
mp_limb_t x[
6 ];
mp_limb_t y[
6 ];
} data[] = {
/* reducing to zero */
{ {
1 }, {
1 }, {
1 } },
{ {
2 }, {
1 }, {
2 } },
{ {
0 ,
1 }, {
0 ,
1 }, {
1 } },
/* reducing to 1 */
{ {
0 ,
1 }, { M }, {
1 } },
{ {
0 ,
0 ,
1 }, { M,M }, {
1 } },
{ {
0 ,
0 ,
0 ,
1 }, { M,M,M }, {
1 } },
{ {
0 ,
0 ,
0 ,
0 ,
1 }, { M,M,M,M }, {
1 } },
/* reducing to -1 */
{ { M }, {
0 ,
1 }, {
1 } },
{ { M,M }, {
0 ,
0 ,
1 }, {
1 } },
{ { M,M,M }, {
0 ,
0 ,
0 ,
1 }, {
1 } },
{ { M,M,M,M }, {
0 ,
0 ,
0 ,
0 ,
1 }, {
1 } },
/* carry out of addmul */
{ { M }, {
1 }, {
1 } },
{ { M,M }, {
1 }, {
1 } },
{ { M,M,M }, {
1 }, {
1 } },
/* borrow from submul */
{ {
0 ,
1 }, {
1 }, {
1 } },
{ {
0 ,
0 ,
1 }, {
1 }, {
1 } },
{ {
0 ,
0 ,
0 ,
1 }, {
1 }, {
1 } },
/* borrow from submul */
{ {
0 ,
0 ,
1 }, {
0 ,
1 }, {
1 } },
{ {
0 ,
0 ,
0 ,
1 }, {
0 ,
1 }, {
1 } },
{ {
0 ,
0 ,
0 ,
0 ,
1 }, {
0 ,
1 }, {
1 } },
/* more borrow from submul */
{ { M }, {
0 ,
1 }, {
1 } },
{ { M }, {
0 ,
0 ,
1 }, {
1 } },
{ { M }, {
0 ,
0 ,
0 ,
1 }, {
1 } },
{ { M }, {
0 ,
0 ,
0 ,
0 ,
1 }, {
1 } },
/* big borrow from submul */
{ {
0 ,
0 ,
1 }, { M,M }, { M } },
{ {
0 ,
0 ,
0 ,
1 }, { M,M }, { M } },
{ {
0 ,
0 ,
0 ,
0 ,
1 }, { M,M }, { M } },
/* small w */
{ {
0 ,
1 }, { M,M }, { M } },
{ {
0 ,
1 }, { M,M,M }, { M } },
{ {
0 ,
1 }, { M,M,M,M }, { M } },
{ {
0 ,
1 }, { M,M,M,M,M }, { M } },
};
mpz_t w, x, y;
int i;
mpz_init (w);
mpz_init (x);
mpz_init (y);
for (i =
0 ; i < numberof (data); i++)
{
mpz_set_n (w, data[i].w, (mp_size_t) numberof(data[i].w));
mpz_set_n (x, data[i].x, (mp_size_t) numberof(data[i].x));
mpz_set_n (y, data[i].y, (mp_size_t) numberof(data[i].y));
check_all (w, x, y);
}
mpz_clear (w);
mpz_clear (x);
mpz_clear (y);
}
void
check_random (
int argc,
char *argv[])
{
gmp_randstate_ptr rands = RANDS;
mpz_t w, x, y;
int i, reps =
2000 ;
mpz_init (w);
mpz_init (x);
mpz_init (y);
if (argc ==
2 )
reps = atoi (argv[
1 ]);
for (i =
0 ; i < reps; i++)
{
mpz_errandomb (w, rands,
5 *GMP_LIMB_BITS);
mpz_errandomb (x, rands,
5 *GMP_LIMB_BITS);
mpz_errandomb (y, rands,
5 *GMP_LIMB_BITS);
check_all (w, x, y);
check_all_inplace (w, y);
mpz_errandomb (w, rands,
5 *GMP_LIMB_BITS);
mpz_errandomb (x, rands,
5 *GMP_LIMB_BITS);
mpz_errandomb (y, rands, BITS_PER_ULONG);
check_all (w, x, y);
check_all_inplace (w, y);
}
mpz_clear (w);
mpz_clear (x);
mpz_clear (y);
}
int
main (
int argc,
char *argv[])
{
tests_start ();
mp_trace_base = -
16 ;
check_data ();
check_data_inplace_ui ();
check_random (argc, argv);
tests_end ();
exit (
0 );
}
Messung V0.5 in Prozent C=92 H=92 G=91
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-10)
¤
*© Formatika GbR, Deutschland