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/* Test for the C++ implementation of iseqsig.
Copyright (C) 2017-2021 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/>. */
#define _GNU_SOURCE 1
#include <math.h>
#include <stdio.h>
#include <limits>
/* There is no NaN for _Float128 in std::numeric_limits.
Include ieee754_float128.h and use the bitfields in the union
ieee854_float128.ieee_nan to build a NaN. */
#if __HAVE_DISTINCT_FLOAT128
# include <ieee754_float128.h>
#endif
#include <support/check.h>
static void
check (int actual, int expected, const char *actual_expr, int line)
{
if (actual != expected)
{
support_record_failure ();
printf ("%s:%d: error: %s\n", __FILE__, line, actual_expr);
printf ("%s:%d: expected: %d\n", __FILE__, line, expected);
printf ("%s:%d: actual: %d\n", __FILE__, line, actual);
}
}
#define CHECK(actual, expected) \
check ((actual), (expected), #actual, __LINE__)
template <class T1, class T2>
static void
check_type ()
{
T1 t1 = 0;
T2 t2 = 0;
CHECK (iseqsig (t1, t2), 1);
t2 = 1;
CHECK (iseqsig (t1, t2), 0);
if (std::numeric_limits<T1>::has_quiet_NaN
&& std::numeric_limits<T2>::has_quiet_NaN)
{
CHECK (iseqsig (std::numeric_limits<T1>::quiet_NaN (), t2), 0);
CHECK (iseqsig (t1, std::numeric_limits<T2>::quiet_NaN ()), 0);
CHECK (iseqsig (std::numeric_limits<T1>::quiet_NaN (),
std::numeric_limits<T2>::quiet_NaN ()), 0);
}
}
#if __HAVE_DISTINCT_FLOAT128
static void
check_float128 ()
{
ieee854_float128 q1, q2, q3_nan;
q1.d = 0;
q2.d = 1;
q3_nan.ieee_nan.negative = 0;
q3_nan.ieee_nan.exponent = 0x7FFF;
q3_nan.ieee_nan.quiet_nan = 1;
q3_nan.ieee_nan.mantissa0 = 0x0000;
q3_nan.ieee_nan.mantissa1 = 0x00000000;
q3_nan.ieee_nan.mantissa2 = 0x00000000;
q3_nan.ieee_nan.mantissa3 = 0x00000000;
CHECK (iseqsig (q1.d, q1.d), 1);
CHECK (iseqsig (q1.d, q2.d), 0);
CHECK (iseqsig (q1.d, q3_nan.d), 0);
CHECK (iseqsig (q3_nan.d, q3_nan.d), 0);
}
#endif
static int
do_test (void)
{
check_type<float, float> ();
check_type<float, double> ();
check_type<float, long double> ();
check_type<double, float> ();
check_type<double, double> ();
check_type<double, long double> ();
check_type<long double, float> ();
check_type<long double, double> ();
check_type<long double, long double> ();
#if __HAVE_DISTINCT_FLOAT128
check_float128 ();
#endif
return 0;
}
#include <support/test-driver.c>
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