182 lines
3.6 KiB
C
182 lines
3.6 KiB
C
/* Test mpz_cmp and mpz_cmpabs.
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Copyright 2001 Free Software Foundation, Inc.
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This file is part of the GNU MP Library test suite.
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The GNU MP Library test suite is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 3 of the License,
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or (at your option) any later version.
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The GNU MP Library test suite is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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Public License for more details.
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You should have received a copy of the GNU General Public License along with
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the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "gmp-impl.h"
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#include "tests.h"
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/* Nothing sophisticated here, just exercise some combinations of sizes and
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signs. */
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void
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check_one (mpz_ptr x, mpz_ptr y, int want_cmp, int want_cmpabs)
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{
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int got;
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got = mpz_cmp (x, y);
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if (( got < 0) != (want_cmp < 0)
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|| (got == 0) != (want_cmp == 0)
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|| (got > 0) != (want_cmp > 0))
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{
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printf ("mpz_cmp got %d want %d\n", got, want_cmp);
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mpz_trace ("x", x);
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mpz_trace ("y", y);
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abort ();
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}
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got = mpz_cmpabs (x, y);
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if (( got < 0) != (want_cmpabs < 0)
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|| (got == 0) != (want_cmpabs == 0)
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|| (got > 0) != (want_cmpabs > 0))
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{
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printf ("mpz_cmpabs got %d want %d\n", got, want_cmpabs);
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mpz_trace ("x", x);
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mpz_trace ("y", y);
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abort ();
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}
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}
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void
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check_all (mpz_ptr x, mpz_ptr y, int want_cmp, int want_cmpabs)
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{
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check_one (x, y, want_cmp, want_cmpabs);
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check_one (y, x, -want_cmp, -want_cmpabs);
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mpz_neg (x, x);
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mpz_neg (y, y);
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want_cmp = -want_cmp;
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check_one (x, y, want_cmp, want_cmpabs);
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check_one (y, x, -want_cmp, -want_cmpabs);
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}
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#define SET1(z,size, n) \
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SIZ(z) = size; PTR(z)[0] = n
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#define SET2(z,size, n1,n0) \
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SIZ(z) = size; PTR(z)[1] = n1; PTR(z)[0] = n0
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#define SET4(z,size, n3,n2,n1,n0) \
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SIZ(z) = size; PTR(z)[3] = n3; PTR(z)[2] = n2; PTR(z)[1] = n1; PTR(z)[0] = n0
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void
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check_various (void)
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{
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mpz_t x, y;
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mpz_init (x);
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mpz_init (y);
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mpz_realloc (x, (mp_size_t) 20);
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mpz_realloc (y, (mp_size_t) 20);
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/* 0 cmp 0, junk in low limbs */
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SET1 (x,0, 123);
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SET1 (y,0, 456);
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check_all (x, y, 0, 0);
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/* 123 cmp 0 */
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SET1 (x,1, 123);
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SET1 (y,0, 456);
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check_all (x, y, 1, 1);
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/* 123:456 cmp 0 */
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SET2 (x,2, 456,123);
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SET1 (y,0, 9999);
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check_all (x, y, 1, 1);
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/* 123 cmp 123 */
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SET1(x,1, 123);
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SET1(y,1, 123);
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check_all (x, y, 0, 0);
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/* -123 cmp 123 */
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SET1(x,-1, 123);
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SET1(y,1, 123);
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check_all (x, y, -1, 0);
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/* 123 cmp 456 */
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SET1(x,1, 123);
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SET1(y,1, 456);
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check_all (x, y, -1, -1);
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/* -123 cmp 456 */
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SET1(x,-1, 123);
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SET1(y,1, 456);
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check_all (x, y, -1, -1);
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/* 123 cmp -456 */
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SET1(x,1, 123);
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SET1(y,-1, 456);
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check_all (x, y, 1, -1);
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/* 1:0 cmp 1:0 */
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SET2 (x,2, 1,0);
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SET2 (y,2, 1,0);
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check_all (x, y, 0, 0);
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/* -1:0 cmp 1:0 */
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SET2 (x,-2, 1,0);
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SET2 (y,2, 1,0);
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check_all (x, y, -1, 0);
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/* 2:0 cmp 1:0 */
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SET2 (x,2, 2,0);
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SET2 (y,2, 1,0);
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check_all (x, y, 1, 1);
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/* 4:3:2:1 cmp 2:1 */
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SET4 (x,4, 4,3,2,1);
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SET2 (y,2, 2,1);
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check_all (x, y, 1, 1);
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/* -4:3:2:1 cmp 2:1 */
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SET4 (x,-4, 4,3,2,1);
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SET2 (y,2, 2,1);
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check_all (x, y, -1, 1);
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mpz_clear (x);
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mpz_clear (y);
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}
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int
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main (void)
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{
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tests_start ();
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mp_trace_base = -16;
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check_various ();
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tests_end ();
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exit (0);
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}
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