/* Test fesetenv (FE_DFL_ENV) and fesetenv (FE_NOMASK_ENV) clear

   exceptions (bug 19181).

   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 <fenv.h>

#include <float.h>

#include <stdio.h>

volatile float fa = 1.0f, fb = 0.0f, fc = FLT_MAX, fr;

volatile long double lda = 1.0L, ldb = 0.0L, ldc = LDBL_MAX, ldr;

static void

raise_exceptions (void)

{

  /* Raise exceptions both with feraiseexcept and arithmetic to allow

     for case of multiple floating-point units with separate

     exceptions state.  */

  feraiseexcept (FE_ALL_EXCEPT);

  fr = fb / fb;

  fr = fa / fb;

  fr = fc * fc;

  fr = fa / fc / fc;

  ldr = ldb / ldb;

  ldr = lda / ldb;

  ldr = ldc * ldc;

  ldr = lda / ldc / ldc;

}

static __attribute__ ((noinline)) int

run_tests (void)

{

  int result = 0;

  raise_exceptions ();

  if (fesetenv (FE_DFL_ENV) == 0)

    {

      puts ("PASS: fesetenv (FE_DFL_ENV)");

      if (fetestexcept (FE_ALL_EXCEPT) == 0)

	puts ("PASS: fesetenv (FE_DFL_ENV) clearing exceptions");

      else

	{

	  puts ("FAIL: fesetenv (FE_DFL_ENV) clearing exceptions");

	  result = 1;

	}

    }

  else

    {

      puts ("FAIL: fesetenv (FE_DFL_ENV)");

      result = 1;

    }

#ifdef FE_NOMASK_ENV

  raise_exceptions ();

  if (fesetenv (FE_NOMASK_ENV) == 0)

    {

      if (fetestexcept (FE_ALL_EXCEPT) == 0)

	puts ("PASS: fesetenv (FE_NOMASK_ENV) clearing exceptions");

      else

	{

	  puts ("FAIL: fesetenv (FE_NOMASK_ENV) clearing exceptions");

	  result = 1;

	}

    }

  else

    puts ("fesetenv (FE_NOMASK_ENV) failed, cannot test");

#endif

  return result;

}

static int

do_test (void)

{

  CHECK_CAN_TEST;

  return run_tests ();

}

#define TEST_FUNCTION do_test ()

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