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/* Test iszero with excess precision.
Copyright (C) 2016-2025 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
<https://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"
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