125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/* Exercise mpz_get_si.
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Copyright 2000, 2001 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "tests.h"
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void
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check_data (void)
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{
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static const struct {
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const char *n;
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long want;
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} data[] = {
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{ "0", 0L },
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{ "1", 1L },
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{ "-1", -1L },
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{ "2", 2L },
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{ "-2", -2L },
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{ "12345", 12345L },
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{ "-12345", -12345L },
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};
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int i;
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mpz_t n;
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long got;
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mpz_init (n);
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for (i = 0; i < numberof (data); i++)
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{
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mpz_set_str_or_abort (n, data[i].n, 0);
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got = mpz_get_si (n);
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if (got != data[i].want)
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{
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printf ("mpz_get_si wrong at data[%d]\n", i);
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printf (" n \"%s\" (", data[i].n);
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mpz_out_str (stdout, 10, n); printf (", hex ");
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mpz_out_str (stdout, 16, n); printf (")\n");
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printf (" got %ld (0x%lX)\n", got, got);
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printf (" want %ld (0x%lX)\n", data[i].want, data[i].want);
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abort();
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}
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}
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mpz_clear (n);
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}
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void
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check_max (void)
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{
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mpz_t n;
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long want;
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long got;
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mpz_init (n);
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#define CHECK_MAX(name) \
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if (got != want) \
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{ \
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printf ("mpz_get_si wrong on %s\n", name); \
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printf (" n "); \
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mpz_out_str (stdout, 10, n); printf (", hex "); \
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mpz_out_str (stdout, 16, n); printf ("\n"); \
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printf (" got %ld, hex %lX\n", got, got); \
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printf (" want %ld, hex %lX\n", want, want); \
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abort(); \
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}
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want = LONG_MAX;
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mpz_set_si (n, want);
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got = mpz_get_si (n);
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CHECK_MAX ("LONG_MAX");
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want = LONG_MIN;
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mpz_set_si (n, want);
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got = mpz_get_si (n);
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CHECK_MAX ("LONG_MIN");
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/* The following checks that -0x100000000 gives -0x80000000. This doesn't
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actually fit in a long and the result from mpz_get_si() is undefined,
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but -0x80000000 is what comes out currently, and it should be that
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value irrespective of the mp_limb_t size (long or long long). */
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want = LONG_MIN;
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mpz_mul_2exp (n, n, 1);
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CHECK_MAX ("-0x100...00");
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mpz_clear (n);
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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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check_data ();
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check_max ();
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tests_end ();
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exit (0);
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}
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