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114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/* Test getpayload.
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Copyright 2024-2026 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 (getpayload, double, (const double *));
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#include "minus-zero.h"
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#include "infinity.h"
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#include "signed-nan.h"
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#include "signed-snan.h"
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#include "macros.h"
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#define PAYLOAD_BITS (53 - 2) /* = (DBL_MANT_DIG - 2) */
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int
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main ()
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{
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double arg;
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double ret;
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/* Test non-NaN arguments. */
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arg = 2.718281828459045;
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ret = getpayload (&arg);
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ASSERT (ret == -1.0);
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arg = -3.141592653589793;
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ret = getpayload (&arg);
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ASSERT (ret == -1.0);
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arg = 0.0;
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ret = getpayload (&arg);
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ASSERT (ret == -1.0);
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arg = minus_zerod;
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ret = getpayload (&arg);
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ASSERT (ret == -1.0);
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arg = Infinityd ();
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ret = getpayload (&arg);
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ASSERT (ret == -1.0);
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arg = - Infinityd ();
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ret = getpayload (&arg);
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ASSERT (ret == -1.0);
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/* Test quiet NaNs. */
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{
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int i;
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double p;
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for (i = 0, p = 1.0; i < PAYLOAD_BITS; i++, p *= 2.0)
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{
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ASSERT (setpayload (&arg, p) == 0);
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ret = getpayload (&arg);
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ASSERT (ret == p);
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/* Test quiet NaNs with sign bit == 1. */
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arg = minus_NaNd (arg);
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ret = getpayload (&arg);
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ASSERT (ret == p);
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}
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p = 1320699239819071.0;
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ASSERT (setpayload (&arg, p) == 0);
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ret = getpayload (&arg);
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ASSERT (ret == p);
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}
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/* Test signalling NaNs. */
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{
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int i;
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double p;
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for (i = 0, p = 1.0; i < PAYLOAD_BITS; i++, p *= 2.0)
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{
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ASSERT (setpayloadsig (&arg, p) == 0);
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ret = getpayload (&arg);
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ASSERT (ret == p);
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}
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p = 1320699239819071.0;
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ASSERT (setpayloadsig (&arg, p) == 0);
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ret = getpayload (&arg);
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ASSERT (ret == p);
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/* Test signalling NaNs with sign bit == 1. */
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memory_double pos_arg = memory_positive_SNaNd ();
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memory_double neg_arg = memory_negative_SNaNd ();
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double pos_ret = getpayload (&pos_arg.value);
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double neg_ret = getpayload (&neg_arg.value);
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ASSERT (neg_ret == pos_ret);
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}
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return test_exit_status;
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}
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