/* Test fetestexceptflag.

   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_one (int exc_test, int exc_set, int exc_save)

{

  int result = 0;

  printf ("Individual test: %x %x %x\n", (unsigned int) exc_test,

	  (unsigned int) exc_set, (unsigned int) exc_save);

  feclearexcept (FE_ALL_EXCEPT);

  int ret = fesetexcept (exc_set);

  if (ret != 0)

    {

      puts ("fesetexcept failed");

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

	{

	  puts ("failure of fesetexcept was unexpected");

	  result = 1;

	}

      else

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

      return result;

    }

  fexcept_t saved;

  ret = fegetexceptflag (&saved, exc_save);

  if (ret == 0)

    puts ("fegetexceptflag succeeded");

  else

    {

      puts ("fegetexceptflag failed");

      result = 1;

      return result;

    }

  ret = fetestexceptflag (&saved, exc_test);

  if (ret == (exc_set & exc_test))

    puts ("fetestexceptflag result correct");

  else

    {

      printf ("fetestexceptflag returned %x, expected %x\n", ret,

	      exc_set & exc_test);

      result = 1;

    }

  if (exc_save == FE_ALL_EXCEPT)

    {

      /* Also test fetestexceptflag testing all exceptions but

	 possibly with only some set.  */

      ret = fetestexceptflag (&saved, FE_ALL_EXCEPT);

      if (ret == exc_set)

	puts ("fetestexceptflag (FE_ALL_EXCEPT) result correct");

      else

	{

	  printf ("fetestexceptflag (FE_ALL_EXCEPT) returned %x, expected %x\n",

		  ret, exc_set);

	  result = 1;

	}

    }

  return result;

}

static int

test_fetestexceptflag (int exc, const char *exc_name)

{

  int result = 0;

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

  /* Test each case of: whether this exception is set or clear;

     whether other exceptions are set or clear; whether the whole

     state is saved or just the state for this exception.  */

  result |= test_one (exc, 0, exc);

  result |= test_one (exc, 0, FE_ALL_EXCEPT);

  result |= test_one (exc, exc, exc);

  result |= test_one (exc, exc, FE_ALL_EXCEPT);

  result |= test_one (exc, FE_ALL_EXCEPT & ~exc, exc);

  result |= test_one (exc, FE_ALL_EXCEPT & ~exc, FE_ALL_EXCEPT);

  result |= test_one (exc, FE_ALL_EXCEPT, exc);

  result |= test_one (exc, FE_ALL_EXCEPT, FE_ALL_EXCEPT);

  return result;

}

static int

do_test (void)

{

  int result = 0;

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

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

#ifdef FE_DIVBYZERO

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

#endif

#ifdef FE_INEXACT

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

#endif

#ifdef FE_INVALID

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

#endif

#ifdef FE_OVERFLOW

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

#endif

#ifdef FE_UNDERFLOW

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

#endif

  return result;

}

#define TEST_FUNCTION do_test ()

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