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/* Test getpayload.
Copyright 2024-2025 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <math.h>
#include "signature.h"
SIGNATURE_CHECK (getpayload, double, (const double *));
#include "minus-zero.h"
#include "infinity.h"
#include "signed-nan.h"
#include "signed-snan.h"
#include "macros.h"
#define PAYLOAD_BITS (53 - 2) /* = (DBL_MANT_DIG - 2) */
int
main ()
{
double arg;
double ret;
/* Test non-NaN arguments. */
arg = 2.718281828459045;
ret = getpayload (&arg);
ASSERT (ret == -1.0);
arg = -3.141592653589793;
ret = getpayload (&arg);
ASSERT (ret == -1.0);
arg = 0.0;
ret = getpayload (&arg);
ASSERT (ret == -1.0);
arg = minus_zerod;
ret = getpayload (&arg);
ASSERT (ret == -1.0);
arg = Infinityd ();
ret = getpayload (&arg);
ASSERT (ret == -1.0);
arg = - Infinityd ();
ret = getpayload (&arg);
ASSERT (ret == -1.0);
/* Test quiet NaNs. */
{
int i;
double p;
for (i = 0, p = 1.0; i < PAYLOAD_BITS; i++, p *= 2.0)
{
ASSERT (setpayload (&arg, p) == 0);
ret = getpayload (&arg);
ASSERT (ret == p);
/* Test quiet NaNs with sign bit == 1. */
arg = minus_NaNd (arg);
ret = getpayload (&arg);
ASSERT (ret == p);
}
p = 1320699239819071.0;
ASSERT (setpayload (&arg, p) == 0);
ret = getpayload (&arg);
ASSERT (ret == p);
}
/* Test signalling NaNs. */
{
int i;
double p;
for (i = 0, p = 1.0; i < PAYLOAD_BITS; i++, p *= 2.0)
{
ASSERT (setpayloadsig (&arg, p) == 0);
ret = getpayload (&arg);
ASSERT (ret == p);
}
p = 1320699239819071.0;
ASSERT (setpayloadsig (&arg, p) == 0);
ret = getpayload (&arg);
ASSERT (ret == p);
/* Test signalling NaNs with sign bit == 1. */
memory_double pos_arg = memory_positive_SNaNd ();
memory_double neg_arg = memory_negative_SNaNd ();
double pos_ret = getpayload (&pos_arg.value);
double neg_ret = getpayload (&neg_arg.value);
ASSERT (neg_ret == pos_ret);
}
return test_exit_status;
}
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