/* Test file for mpfr_ai.

Copyright 2010, 2011 Free Software Foundation, Inc.
Contributed by the Arenaire and Caramel 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. */

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>

#include "mpfr-test.h"

#define TEST_FUNCTION mpfr_ai
#define TEST_RANDOM_EMIN -5
#define TEST_RANDOM_EMAX 5
#define REDUCE_EMAX 7 /* this is to avoid that test_generic() calls mpfr_ai
                         with too large inputs. FIXME: remove this once
                         mpfr_ai can handle large inputs */
#include "tgeneric.c"

static void
check_large (void)
{
  mpfr_t x, y, z;

  mpfr_init2 (x, 38);
  mpfr_init2 (y, 110);
  mpfr_init2 (z, 110);
  mpfr_set_str_binary (x, "-1E8");
  mpfr_ai (y, x, MPFR_RNDN);
  mpfr_set_str_binary (z, "-10001110100001011111110001100011101100011100010000110100100101011111011100000101110101010010000000101110011111E-112");
  if (mpfr_equal_p (y, z) == 0)
    {
      printf ("Error in mpfr_ai for x=-2^8\n");
      exit (1);
    }
#if 0 /* disabled since mpfr_ai does not currently handle large arguments */
  mpfr_set_str_binary (x, "-1E26");
  mpfr_ai (y, x, MPFR_RNDN);
  mpfr_set_str_binary (z, "-110001111100000011001010010101001101001011001011101011001010100100001110001101101101000010000011001000001011E-118");
  if (mpfr_equal_p (y, z) == 0)
    {
      printf ("Error in mpfr_ai for x=-2^26\n");
      exit (1);
    }
  mpfr_set_str_binary (x, "-0.11111111111111111111111111111111111111E1073741823");
  mpfr_ai (y, x, MPFR_RNDN);
  /* FIXME: compute the correctly rounded value we should get for Ai(x),
     and check we get this value */
#endif
  mpfr_clear (x);
  mpfr_clear (y);
  mpfr_clear (z);
}

static void
check_zero (void)
{
  mpfr_t x, y, r;

  mpfr_init2 (x, 53);
  mpfr_init2 (y, 53);
  mpfr_init2 (r, 53);

  mpfr_set_str_binary (r, "10110101110001100011110010110001001110001010110111E-51");

  mpfr_set_ui (x, 0, MPFR_RNDN);
  mpfr_ai (y, x, MPFR_RNDN);
  if (mpfr_equal_p (y, r) == 0)
    {
      printf ("Error in mpfr_ai for x=0\n");
      printf ("Expected "); mpfr_dump (r);
      printf ("Got      "); mpfr_dump (y);
      exit (1);
    }
  mpfr_clear (x);
  mpfr_clear (y);
  mpfr_clear (r);
}

int
main (int argc, char *argv[])
{
  tests_start_mpfr ();

  check_large ();
  check_zero ();

  test_generic (2, 100, 5);

  tests_end_mpfr ();
  return 0;
}
