gcc/mpfr/tests/mpf_compat.h

/* Test compatibility mpf-mpfr.

Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by the Arenaire and Cacao 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 2.1 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.LIB.  If not, write to
the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301, USA. */

#if defined (__cplusplus)
#include <cstdio>
#else
#include <stdio.h>
#endif
#include <stdlib.h>
#include <string.h>

#include "gmp.h"
#include "mpfr.h"
#ifdef MPFR
#include "mpf2mpfr.h"
#endif

int
main ()
{
  unsigned long int prec;
  unsigned long int prec2;
  mpf_t x, y;
  mpz_t z;
  mpq_t q;
  double d;
  signed long int exp;
  long l;
  unsigned long u;
  char *s;
  int i;
  FILE *f;
  gmp_randstate_t state;

  /* Initialization Functions */
  prec = 53;
  mpf_set_default_prec (prec);
  prec2 = mpf_get_default_prec ();
  if (prec2 < prec)
    {
      printf ("Error in get_default_prec: %lu < %lu\n", prec2, prec);
      exit (1);
    }

  mpf_init (y);

  mpf_init2 (x, prec);
  prec2 = mpf_get_prec (x);
  if (prec2 < prec)
    {
      printf ("Error in get_prec: %lu < %lu\n", prec2, prec);
      mpf_clear (y);
      mpf_clear (x);
      exit (1);
    }

  mpf_set_prec (x, 2 * prec);
  prec2 = mpf_get_prec (x);
  if (prec2 < 2 * prec)
    {
      printf ("Error in set_prec: %lu < %lu\n", prec2, 2 * prec);
      mpf_clear (y);
      mpf_clear (x);
      exit (1);
    }

  mpf_set_prec_raw (x, prec);
  prec2 = mpf_get_prec (x);
  if (prec2 < prec)
    {
      printf ("Error in set_prec_raw: %lu < %lu\n", prec2, prec);
      mpf_clear (y);
      mpf_clear (x);
      exit (1);
    }

  /* Assignment Functions */

  mpf_set (y, x);
  mpf_set_ui (x, 1);
  mpf_set_si (x, -1);
  mpf_set_d (x, 1.0);

  mpz_init_set_ui (z, 17);
  mpf_set_z (x, z);
  mpz_clear (z);

  mpq_init (q);
  mpq_set_ui (q, 2, 3);
  mpf_set_q (x, q);
  mpq_clear (q);

  mpf_set_str (x, "3.1415e1", 10);
  mpf_swap (x, y);

  /* Combined Initialization and Assignment Functions */

  mpf_clear (x);
  mpf_init_set (x, y);
  mpf_clear (x);
  mpf_init_set_ui (x, 17);
  mpf_clear (x);
  mpf_init_set_si (x, -17);
  mpf_clear (x);
  mpf_init_set_d (x, 17.0);
  mpf_clear (x);
  mpf_init_set_str (x, "3.1415e1", 10);

  /* Conversion Functions */

  d = mpf_get_d (x);
  d = mpf_get_d_2exp (&exp, x);
  l = mpf_get_si (x);
  u = mpf_get_ui (x);
  s = mpf_get_str (NULL, &exp, 10, 10, x);
  /* MPF doen't have mpf_free_str */
  mpfr_free_str (s);


  /* Arithmetic Functions */

  mpf_add (y, x, x);
  mpf_add_ui (y, x, 1);
  mpf_sub (y, x, x);
  mpf_ui_sub (y, 1, x);
  mpf_sub_ui (y, x, 1);
  mpf_mul (y, x, x);
  mpf_mul_ui (y, x, 17);
  mpf_div (y, x, x);
  mpf_ui_div (y, 17, x);
  mpf_div_ui (y, x, 17);
  mpf_sqrt (y, x);
  mpf_sqrt_ui (y, 17);
  mpf_pow_ui (y, x, 2);
  mpf_neg (y, x);
  mpf_abs (y, x);
  mpf_mul_2exp (y, x, 17);
  mpf_div_2exp (y, x, 17);

  /* Comparison Functions */

  i = mpf_cmp (y, x);
  i = mpf_cmp_d (y, 1.7);
  i = mpf_cmp_ui (y, 17);
  i = mpf_cmp_si (y, -17);
  i = mpf_eq (y, x, 17);
  mpf_reldiff (y, y, x);
  i = mpf_sgn (x);

  /* Input and Output Functions */

  f = fopen ("/dev/null", "w");
  if (f != NULL)
    {
      mpf_out_str (f, 10, 10, x);
      fclose (f);
    }

  mpf_set_prec (x, 15);
  mpf_set_prec (y, 15);
  /* We may use src_fopen instead of fopen, but it is defined
     in mpfr-test, and not in mpfr.h and gmp.h, and we want
     to test theses includes files. */
  f = fopen ("inp_str.data", "r");
  if (f != NULL)
    {
      i = mpf_inp_str (x, f, 10);
      if ((i == 0) || mpf_cmp_ui (x, 31415))
        {
          printf ("Error in reading 1st line from file inp_str.data\n");
          exit (1);
        }
      fclose (f);
    }

  /* Miscellaneous Functions */

  mpf_ceil (y, x);
  mpf_floor (y, x);
  mpf_trunc (y, x);

  i = mpf_integer_p (x);

  i = mpf_fits_ulong_p (x);
  i = mpf_fits_slong_p (x);
  i = mpf_fits_uint_p (x);
  i = mpf_fits_sint_p (x);
  i = mpf_fits_ushort_p (x);
  i = mpf_fits_sshort_p (x);

  gmp_randinit (state, GMP_RAND_ALG_LC, 128);
  mpf_urandomb (x, state, 10);
  gmp_randclear (state);

  mpf_random2 (x, 17, 17);

  /* clear all variables */
  mpf_clear (y);
  mpf_clear (x);

  return 0;
}