/* Test for ldbl-128ibm strtold overflow to infinity (bug 14551).

   Copyright (C) 2015-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C 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 C 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 C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <fenv.h>

#include <math.h>

#include <stdio.h>

#include <stdlib.h>

static int

test_strtold_value (const char *s, double exp_hi, double exp_lo, int exp_exc,

		    int exp_errno)

{

  int result = 0;

  union { long double ld; double d[2]; } x;

  feclearexcept (FE_ALL_EXCEPT);

  errno = 0;

  x.ld = strtold (s, NULL);

  int exc = fetestexcept (FE_ALL_EXCEPT);

  int new_errno = errno;

  printf ("strtold (\"%s\") returned (%a, %a), exceptions 0x%x, errno %d\n",

	  s, x.d[0], x.d[1], exc, new_errno);

  if (x.d[0] == exp_hi)

    printf ("PASS: strtold (\"%s\") high == %a\n", s, exp_hi);

  else

    {

      printf ("FAIL: strtold (\"%s\") high == %a\n", s, exp_hi);

      result = 1;

    }

  if (x.d[1] == exp_lo)

    printf ("PASS: strtold (\"%s\") low == %a\n", s, exp_lo);

  else

    {

      printf ("FAIL: strtold (\"%s\") low == %a\n", s, exp_lo);

      result = 1;

    }

  if (exc == exp_exc)

    printf ("PASS: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc);

  else

    {

      printf ("FAIL: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc);

      result = 1;

    }

  if (new_errno == exp_errno)

    printf ("PASS: strtold (\"%s\") errno %d\n", s, exp_errno);

  else

    {

      printf ("FAIL: strtold (\"%s\") errno %d\n", s, exp_errno);

      result = 1;

    }

  return result;

}

static int

do_test (void)

{

  int result = 0;

  result |= test_strtold_value ("0x1.fffffffffffff8p+1023", INFINITY, 0,

				FE_OVERFLOW | FE_INEXACT, ERANGE);

  result |= test_strtold_value ("-0x1.fffffffffffff8p+1023", -INFINITY, 0,

				FE_OVERFLOW | FE_INEXACT, ERANGE);

  result |= test_strtold_value ("0x1.ffffffffffffffp+1023", INFINITY, 0,

				FE_OVERFLOW | FE_INEXACT, ERANGE);

  result |= test_strtold_value ("-0x1.ffffffffffffffp+1023", -INFINITY, 0,

				FE_OVERFLOW | FE_INEXACT, ERANGE);

  return result;

}

#define TEST_FUNCTION do_test ()

#include "../../../test-skeleton.c"