t-cmp_si.c
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上传日期:2022-08-06
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- /* Test mpz_cmp_si.
- Copyright 2000, 2001 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 3 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. If not, see http://www.gnu.org/licenses/. */
- #include <stdio.h>
- #include <stdlib.h>
- #include "gmp.h"
- #include "gmp-impl.h"
- #include "tests.h"
- #define SGN(x) ((x) < 0 ? -1 : (x) == 0 ? 0 : 1)
- void
- check_data (void)
- {
- static const struct {
- const char *a, *b;
- int want;
- } data[] = {
- { "0", "1", -1 },
- { "0", "0", 0 },
- { "0", "-1", 1 },
- { "1", "1", 0 },
- { "1", "0", 1 },
- { "1", "-1", 1 },
- { "-1", "1", -1 },
- { "-1", "0", -1 },
- { "-1", "-1", 0 },
- { "0", "-0x80000000", 1 },
- { "0x80000000", "-0x80000000", 1 },
- { "0x80000001", "-0x80000000", 1 },
- { "-0x80000000", "-0x80000000", 0 },
- { "-0x80000001", "-0x80000000", -1 },
- { "0", "-0x8000000000000000", 1 },
- { "0x8000000000000000", "-0x8000000000000000", 1 },
- { "0x8000000000000001", "-0x8000000000000000", 1 },
- { "-0x8000000000000000", "-0x8000000000000000", 0 },
- { "-0x8000000000000001", "-0x8000000000000000", -1 },
- };
- mpz_t a, bz;
- long b;
- int got;
- int i;
- mpz_init (a);
- mpz_init (bz);
- for (i = 0; i < numberof (data); i++)
- {
- mpz_set_str_or_abort (a, data[i].a, 0);
- mpz_set_str_or_abort (bz, data[i].b, 0);
- if (mpz_fits_slong_p (bz))
- {
- b = mpz_get_si (bz);
- got = mpz_cmp_si (a, b);
- if (SGN (got) != data[i].want)
- {
- printf ("mpz_cmp_si wrong on data[%d]n", i);
- printf (" a="); mpz_out_str (stdout, 10, a); printf ("n");
- printf (" b=%ldn", b);
- printf (" got=%dn", got);
- printf (" want=%dn", data[i].want);
- abort();
- }
- }
- }
- mpz_clear (a);
- mpz_clear (bz);
- }
- int
- main (void)
- {
- tests_start ();
- check_data ();
- tests_end ();
- exit (0);
- }