tests/tinp_str.c - master - githubmirror/mpfr

tests/tinp_str.c
128 строк3 KB
Vincent Lefevre
Updated the "Contributed" lines.
02 фев 2025, 02:39
02 фев 2025, 02:39a774f60
/* Test file for mpfr_inp_str.

Copyright 2004, 2006-2025 Free Software Foundation, Inc.
Contributed by the Pascaline and Caramba projects, INRIA.

This file is part of the GNU MPFR Library.

The GNU MPFR 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 MPFR 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 MPFR Library; see the file COPYING.LESSER.
If not, see <https://www.gnu.org/licenses/>. */

#include <ctype.h>

#include "mpfr-test.h"

#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif

int
main (int argc, char *argv[])
{
  mpfr_t x;
  mpfr_t y;
  FILE *f;
  int i, n;

  /* Since some needed characters like '-' and '.' may be whitespace
     characters in non-"C" locales, do the test in the "C" locale
     (this is the default). But the ISO C specification might change
     as this would also be an issue for functions like strtod or
     strtol (the latter is used by MPFR). */
  tests_locale_enabled = 0;

  tests_start_mpfr ();

  mpfr_init (x);
  mpfr_init (y);

  mpfr_set_prec (x, 15);
  f = src_fopen ("inp_str.dat", "r");
  if (f == NULL)
    {
      printf ("Error, can't open inp_str.dat\n");
      exit (1);
    }
  i = mpfr_inp_str (x, f, 10, MPFR_RNDN);
  if (i != 5 || mpfr_cmp_si0 (x, -1700))
    {
      printf ("Error in reading 1st line from file inp_str.dat (%d)\n", i);
      mpfr_dump (x);
      exit (1);
    }
  i = mpfr_inp_str (x, f, 10, MPFR_RNDN);
  if (i != 10 || mpfr_cmp_ui0 (x, 31415))
    {
      printf ("Error in reading 2nd line from file inp_str.dat (%d)\n", i);
      mpfr_dump (x);
      exit (1);
    }
  i = mpfr_inp_str (x, f, 10, MPFR_RNDN);
  if (i != 111 || mpfr_cmp_ui0 (x, 31416))
    {
      printf ("Error in reading 3rd line from file inp_str.dat (%d)\n", i);
      mpfr_dump (x);
      exit (1);
    }
  /* The 4th line is "12_this_is_an_invalid_float" (between the quotes).
     Though the prefix 12 is a valid float, the full word is not, hence
     the expected error. */
  i = mpfr_inp_str (x, f, 10, MPFR_RNDN);
  if (i != 0)
    {
      printf ("Error in reading 4th line from file inp_str.dat (%d)\n", i);
      mpfr_dump (x);
      exit (1);
    }

  mpfr_set_prec (x, 53);
  mpfr_set_prec (y, 53);
  mpfr_set_str (y, "1.0010010100001110100101001110011010111011100001110010e226",
                2, MPFR_RNDN);
  for (n = 2; n < 63; n++)
    {
      i = mpfr_inp_str (x, f, n, MPFR_RNDN);
      if (i == 0 || !mpfr_equal_p (x, y))
        {
          printf ("Error in reading %dth line from file inp_str.dat (%d)\n",
                  n+3, i);
          mpfr_dump (x);
          exit (1);
        }
      mpfr_set_ui (x, 0, MPFR_RNDN);
    }

  /* In the "C" locale, isspace(0) is false. */
  i = mpfr_inp_str (x, f, 10, MPFR_RNDN);
  if (i != 0)
    {
      printf ("Error in the '\\0' test (%d)\n", i);
      exit (1);
    }
  i = mpfr_inp_str (x, f, 10, MPFR_RNDN);
  if (i != 3 || mpfr_cmp_ui0 (x, 17))
    {
      printf ("Error following the '\\0' test (%d)\n", i);
      mpfr_dump (x);
      exit (1);
    }

  fclose (f);

  mpfr_clear (x);
  mpfr_clear (y);

  tests_end_mpfr ();
  return 0;
}