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/* 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);
}
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