/* Test mpz_cmp and mpz_cmpabs.
Copyright 2001 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"
/* Nothing sophisticated here, just exercise some combinations of sizes and
signs. */
void
check_one (mpz_ptr x, mpz_ptr y,
int want_cmp,
int want_cmpabs)
{
int got;
got = mpz_cmp (x, y);
if (( got <
0 ) != (want_cmp <
0 )
|| (got ==
0 ) != (want_cmp ==
0 )
|| (got >
0 ) != (want_cmp >
0 ))
{
printf (
"mpz_cmp got %d want %d\n" , got, want_cmp);
mpz_trace (
"x" , x);
mpz_trace (
"y" , y);
abort ();
}
got = mpz_cmpabs (x, y);
if (( got <
0 ) != (want_cmpabs <
0 )
|| (got ==
0 ) != (want_cmpabs ==
0 )
|| (got >
0 ) != (want_cmpabs >
0 ))
{
printf (
"mpz_cmpabs got %d want %d\n" , got, want_cmpabs);
mpz_trace (
"x" , x);
mpz_trace (
"y" , y);
abort ();
}
}
void
check_all (mpz_ptr x, mpz_ptr y,
int want_cmp,
int want_cmpabs)
{
check_one (x, y, want_cmp, want_cmpabs);
check_one (y, x, -want_cmp, -want_cmpabs);
mpz_neg (x, x);
mpz_neg (y, y);
want_cmp = -want_cmp;
check_one (x, y, want_cmp, want_cmpabs);
check_one (y, x, -want_cmp, -want_cmpabs);
}
#define SET1(z,size, n) \
SIZ(z) = size; PTR(z)[
0 ] = n
#define SET2(z,size, n1,n0) \
SIZ(z) = size; PTR(z)[
1 ] = n1; PTR(z)[
0 ] = n0
#define SET4(z,size, n3,n2,n1,n0) \
SIZ(z) = size; PTR(z)[
3 ] = n3; PTR(z)[
2 ] = n2; PTR(z)[
1 ] = n1; PTR(z)[
0 ] = n0
void
check_various (
void )
{
mpz_t x, y;
mpz_init (x);
mpz_init (y);
mpz_realloc (x, (mp_size_t)
20 );
mpz_realloc (y, (mp_size_t)
20 );
/* 0 cmp 0, junk in low limbs */
SET1 (x,
0 ,
123 );
SET1 (y,
0 ,
456 );
check_all (x, y,
0 ,
0 );
/* 123 cmp 0 */
SET1 (x,
1 ,
123 );
SET1 (y,
0 ,
456 );
check_all (x, y,
1 ,
1 );
/* 123:456 cmp 0 */
SET2 (x,
2 ,
456 ,
123 );
SET1 (y,
0 ,
9999 );
check_all (x, y,
1 ,
1 );
/* 123 cmp 123 */
SET1(x,
1 ,
123 );
SET1(y,
1 ,
123 );
check_all (x, y,
0 ,
0 );
/* -123 cmp 123 */
SET1(x,-
1 ,
123 );
SET1(y,
1 ,
123 );
check_all (x, y, -
1 ,
0 );
/* 123 cmp 456 */
SET1(x,
1 ,
123 );
SET1(y,
1 ,
456 );
check_all (x, y, -
1 , -
1 );
/* -123 cmp 456 */
SET1(x,-
1 ,
123 );
SET1(y,
1 ,
456 );
check_all (x, y, -
1 , -
1 );
/* 123 cmp -456 */
SET1(x,
1 ,
123 );
SET1(y,-
1 ,
456 );
check_all (x, y,
1 , -
1 );
/* 1:0 cmp 1:0 */
SET2 (x,
2 ,
1 ,
0 );
SET2 (y,
2 ,
1 ,
0 );
check_all (x, y,
0 ,
0 );
/* -1:0 cmp 1:0 */
SET2 (x,-
2 ,
1 ,
0 );
SET2 (y,
2 ,
1 ,
0 );
check_all (x, y, -
1 ,
0 );
/* 2:0 cmp 1:0 */
SET2 (x,
2 ,
2 ,
0 );
SET2 (y,
2 ,
1 ,
0 );
check_all (x, y,
1 ,
1 );
/* 4:3:2:1 cmp 2:1 */
SET4 (x,
4 ,
4 ,
3 ,
2 ,
1 );
SET2 (y,
2 ,
2 ,
1 );
check_all (x, y,
1 ,
1 );
/* -4:3:2:1 cmp 2:1 */
SET4 (x,-
4 ,
4 ,
3 ,
2 ,
1 );
SET2 (y,
2 ,
2 ,
1 );
check_all (x, y, -
1 ,
1 );
mpz_clear (x);
mpz_clear (y);
}
int
main (
void )
{
tests_start ();
mp_trace_base = -
16 ;
check_various ();
tests_end ();
exit (
0 );
}
Messung V0.5 in Prozent C=92 H=96 G=93
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-10)
¤
*© Formatika GbR, Deutschland