98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/* Test setpayloadl.
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Copyright 2024 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <math.h>
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#include "signature.h"
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SIGNATURE_CHECK (setpayloadl, int, (long double *, long double));
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#include <float.h>
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#include "infinity.h"
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#include "isnanl-nolibm.h"
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#include "macros.h"
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#if defined __powerpc__ && LDBL_MANT_DIG == 106
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/* This is PowerPC "double double", a pair of two doubles. NaN is represented
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as the corresponding 64-bit IEEE value in the first double; the second is
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irrelevant and therefore does not contain a payload. */
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# define PAYLOAD_BITS (DBL_MANT_DIG - 2)
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#else
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# define PAYLOAD_BITS (LDBL_MANT_DIG - 2)
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#endif
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int
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main ()
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{
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int i;
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long double p;
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{
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/* Test valid payloads. */
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for (i = 0, p = 1.0L; i < PAYLOAD_BITS; i++, p *= 2.0L)
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{
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int ret;
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long double x;
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ret = setpayloadl (&x, p);
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ASSERT (ret == 0);
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ASSERT (isnanl (x));
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}
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/* Test out-of-range payload. */
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int ret;
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long double x;
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ret = setpayloadl (&x, p);
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ASSERT (ret != 0);
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ASSERT (x == 0.0L);
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}
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/* Test infinite payload. */
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{
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int ret;
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long double x;
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ret = setpayloadl (&x, Infinityl ());
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ASSERT (ret != 0);
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ASSERT (x == 0.0L);
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}
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/* Test negative payload. */
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{
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int ret;
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long double x;
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ret = setpayloadl (&x, -1.0L);
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ASSERT (ret != 0);
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ASSERT (x == 0.0L);
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}
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/* Test fractional payload. */
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{
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int ret;
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long double x;
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ret = setpayloadl (&x, 1.4L);
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ASSERT (ret != 0);
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ASSERT (x == 0.0L);
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}
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return test_exit_status;
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}
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