/* Test iszero with excess precision.

   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 <float.h>

#include <math.h>

#include <stdio.h>

#define TEST(TYPE, TRUE_MIN)						\

  do									\

    {									\

      if (iszero (TRUE_MIN / 2))					\

	puts ("iszero removes excess precision for " #TYPE);		\

      else								\

	{								\

	  puts ("iszero fails to remove excess precision for " #TYPE);	\

	  result = 1;							\

	}								\

    }									\

  while (0)

static int

do_test (void)

{

  int result = 0;

  TEST (float, FLT_TRUE_MIN);

  TEST (double, DBL_TRUE_MIN);

  TEST (long double, LDBL_TRUE_MIN);

  return result;

}

#define TEST_FUNCTION do_test ()

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