tests/mpq/t-cmp_si.c

/* Test mpq_cmp_si.

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 <limits.h>

#include "gmp-impl.h"
#include "tests.h"


#define SGN(x)   ((x)<0 ? -1 : (x) != 0)

void
check_data (void)
{
  static const struct {
    const char     *q;
    long           n;
    unsigned long  d;
    int            want;
  } data[] = {
    { "0", 0, 1, 0 },
    { "0", 0, 123, 0 },
    { "0", 0, ULONG_MAX, 0 },
    { "1", 0, 1, 1 },
    { "1", 0, 123, 1 },
    { "1", 0, ULONG_MAX, 1 },
    { "-1", 0, 1, -1 },
    { "-1", 0, 123, -1 },
    { "-1", 0, ULONG_MAX, -1 },

    { "123", 123, 1, 0 },
    { "124", 123, 1, 1 },
    { "122", 123, 1, -1 },

    { "-123", 123, 1, -1 },
    { "-124", 123, 1, -1 },
    { "-122", 123, 1, -1 },

    { "123", -123, 1, 1 },
    { "124", -123, 1, 1 },
    { "122", -123, 1, 1 },

    { "-123", -123, 1, 0 },
    { "-124", -123, 1, -1 },
    { "-122", -123, 1, 1 },

    { "5/7", 3,4, -1 },
    { "5/7", -3,4, 1 },
    { "-5/7", 3,4, -1 },
    { "-5/7", -3,4, 1 },
  };

  mpq_t  q;
  int    i, got;

  mpq_init (q);

  for (i = 0; i < numberof (data); i++)
    {
      mpq_set_str_or_abort (q, data[i].q, 0);
      MPQ_CHECK_FORMAT (q);

      got = mpq_cmp_si (q, data[i].n, data[i].d);
      if (SGN(got) != data[i].want)
        {
          printf ("mpq_cmp_si wrong\n");
        error:
          mpq_trace ("  q", q);
          printf ("  n=%ld\n", data[i].n);
          printf ("  d=%lu\n", data[i].d);
          printf ("  got=%d\n", got);
          printf ("  want=%d\n", data[i].want);
          abort ();
        }

      if (data[i].n == 0)
        {
          got = mpq_cmp_si (q, 0L, data[i].d);
          if (SGN(got) != data[i].want)
            {
              printf ("mpq_cmp_si wrong\n");
              goto error;
            }
        }
    }

  mpq_clear (q);
}

int
main (int argc, char **argv)
{
  tests_start ();

  check_data ();

  tests_end ();
  exit (0);
}