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/* Test setpayload.
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 (setpayload, int, (double *, double));
#include "infinity.h"
#include "isnand-nolibm.h"
#include "macros.h"
#define PAYLOAD_BITS (53 - 2) /* = (DBL_MANT_DIG - 2) */
int
main ()
{
int i;
double p;
{
/* Test valid payloads. */
for (i = 0, p = 1.0; i < PAYLOAD_BITS; i++, p *= 2.0)
{
int ret;
double x;
ret = setpayload (&x, p);
ASSERT (ret == 0);
ASSERT (isnand (x));
}
/* Test out-of-range payload. */
int ret;
double x;
ret = setpayload (&x, p);
ASSERT (ret != 0);
ASSERT (x == 0.0);
}
/* Test infinite payload. */
{
int ret;
double x;
ret = setpayload (&x, Infinityd ());
ASSERT (ret != 0);
ASSERT (x == 0.0);
}
/* Test negative payload. */
{
int ret;
double x;
ret = setpayload (&x, -1.0);
ASSERT (ret != 0);
ASSERT (x == 0.0);
}
/* Test fractional payload. */
{
int ret;
double x;
ret = setpayload (&x, 1.4);
ASSERT (ret != 0);
ASSERT (x == 0.0);
}
return test_exit_status;
}
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