niceSOFT/mpfr | Gitverse

tests/tstdint.c
100 строк3 KB
Vincent Lefèvre
03 янв 2018, 13:53
03 янв 2018, 13:532fce388
/* Test file for multiple mpfr.h inclusion and intmax_t related functions

Copyright 2010-2018 Free Software Foundation, Inc.
Contributed by the AriC 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
http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */

#if HAVE_STDINT_H

#if _MPFR_EXP_FORMAT == 4
/* If mpfr_exp_t is defined as intmax_t, intmax_t must be defined before
   the inclusion of mpfr.h (this test doesn't use mpfr-impl.h). */
# include <stdint.h>
#endif

#ifdef MPFR_USE_MINI_GMP
#include "mpfr-test.h"
#endif

/* One of the goals of this test is to detect potential issues with the
 * following case in user code:
 *
 * #include <some_lib.h>
 * #include <stdint.h>
 * #define MPFR_USE_INTMAX_T
 * #include <mpfr.h>
 *
 * where some_lib.h has "#include <mpfr.h>". So, the mpfr.h header file
 * is included multiple times, a first time without <stdint.h> before,
 * and a second time with <stdint.h> support. We need to make sure that
 * the second inclusion is not a no-op due to some #include guard. This
 * was fixed in r7320.
 *
 * With mini-gmp, mpfr-impl.h is included first, but this should not
 * affect this test.
 *
 * Note: If _MPFR_EXP_FORMAT == 4 (which is never the case by default),
 * a part of the above check is not done because <stdint.h> is included
 * before the first mpfr.h inclusion (see above).
 */
#include <mpfr.h>

#include <stdint.h>

#define MPFR_USE_INTMAX_T
#include <mpfr.h>

#include "mpfr-test.h"

int
main (void)
{
  mpfr_t x;
  intmax_t j;

  tests_start_mpfr ();

  mpfr_init_set_ui (x, 1, MPFR_RNDN);
  j = mpfr_get_uj (x, MPFR_RNDN);
  mpfr_clear (x);
  if (j != 1)
    {
#ifdef MPFR_PRINTF_MAXLM
      printf ("Error: got %" MPFR_PRINTF_MAXLM "d instead of 1.\n", j);
#else
      printf ("Error: did not get 1.\n");
#endif
      exit (1);
    }

  tests_end_mpfr ();
  return 0;
}

#else  /* HAVE_STDINT_H */

/* The test is disabled. */

int
main (void)
{
  return 77;
}

#endif  /* HAVE_STDINT_H */