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37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* Get NaN payload. dbl-64 version.
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Copyright (C) 2016-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <fix-int-fp-convert-zero.h>
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#include <math.h>
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#include <math_private.h>
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#include <libm-alias-double.h>
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#include <stdint.h>
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double
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__getpayload (const double *x)
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{
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uint32_t hx, lx;
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EXTRACT_WORDS (hx, lx, *x);
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hx &= 0x7ffff;
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uint64_t ix = ((uint64_t) hx << 32) | lx;
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if (FIX_INT_FP_CONVERT_ZERO && ix == 0)
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return 0.0f;
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return (double) ix;
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}
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libm_alias_double (__getpayload, getpayload)
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