/* Test fesetexcept.

   Copyright (C) 2016-2018 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 <fenv.h>

#include <stdio.h>

#include <math-tests.h>

static int

test_fesetexcept (int exc, const char *exc_name)

{

  int result = 0;

  printf ("Testing %s\n", exc_name);

  feclearexcept (FE_ALL_EXCEPT);

  int ret = fesetexcept (exc);

  if (ret == 0)

    printf ("fesetexcept (%s) succeeded\n", exc_name);

  else

    {

      printf ("fesetexcept (%s) failed\n", exc_name);

      if (exc == 0 || EXCEPTION_TESTS (float))

	{

	  puts ("failure of fesetexcept was unexpected");

	  result = 1;

	}

      else

	puts ("failure of fesetexcept OK, skipping further tests");

      return result;

    }

  ret = fetestexcept (FE_ALL_EXCEPT);

  if (ret != exc)

    {

      printf ("raised exceptions %x, expected %x\n",

	      (unsigned int) ret, (unsigned int) exc);

      result = 1;

    }

  ret = feraiseexcept (FE_ALL_EXCEPT);

  if (ret != 0)

    {

      if (exc == 0 && !EXCEPTION_TESTS (float))

	{

	  puts ("feraiseexcept (FE_ALL_EXCEPT) failed, skipping further tests");

	  return result;

	}

      puts ("feraiseexcept (FE_ALL_EXCEPT) unexpectedly failed");

      result = 1;

    }

  ret = fesetexcept (exc);

  if (ret != 0)

    {

      puts ("fesetexcept (second test) unexpectedly failed");

      result = 1;

    }

  ret = fetestexcept (FE_ALL_EXCEPT);

  if (ret != FE_ALL_EXCEPT)

    {

      printf ("raised exceptions (second test) %x, expected %x\n",

	      (unsigned int) ret, (unsigned int) FE_ALL_EXCEPT);

      result = 1;

    }

  feclearexcept (FE_ALL_EXCEPT);

  ret = feraiseexcept (FE_ALL_EXCEPT & ~exc);

  if (ret != 0)

    {

      puts ("feraiseexcept (third test) unexpectedly failed");

      result = 1;

    }

  ret = fesetexcept (exc);

  if (ret != 0)

    {

      puts ("fesetexcept (third test) unexpectedly failed");

      result = 1;

    }

  ret = fetestexcept (FE_ALL_EXCEPT);

  if (ret != FE_ALL_EXCEPT)

    {

      printf ("raised exceptions (third test) %x, expected %x\n",

	      (unsigned int) ret, (unsigned int) FE_ALL_EXCEPT);

      result = 1;

    }

  return result;

}

static int

do_test (void)

{

  int result = 0;

  result |= test_fesetexcept (0, "0");

  result |= test_fesetexcept (FE_ALL_EXCEPT, "FE_ALL_EXCEPT");

#ifdef FE_DIVBYZERO

  result |= test_fesetexcept (FE_DIVBYZERO, "FE_DIVBYZERO");

#endif

#ifdef FE_INEXACT

  result |= test_fesetexcept (FE_INEXACT, "FE_INEXACT");

#endif

#ifdef FE_INVALID

  result |= test_fesetexcept (FE_INVALID, "FE_INVALID");

#endif

#ifdef FE_OVERFLOW

  result |= test_fesetexcept (FE_OVERFLOW, "FE_OVERFLOW");

#endif

#ifdef FE_UNDERFLOW

  result |= test_fesetexcept (FE_UNDERFLOW, "FE_UNDERFLOW");

#endif

  return result;

}

#define TEST_FUNCTION do_test ()

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