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51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/* Total order operation on absolute values. ldbl-128 version.
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Copyright (C) 2016-2018 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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<http://www.gnu.org/licenses/>. */
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#include <math.h>
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#include <math_private.h>
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#include <libm-alias-ldouble.h>
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#include <nan-high-order-bit.h>
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#include <stdint.h>
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int
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__totalordermagl (_Float128 x, _Float128 y)
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{
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uint64_t hx, hy;
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uint64_t lx, ly;
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GET_LDOUBLE_WORDS64 (hx, lx, x);
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GET_LDOUBLE_WORDS64 (hy, ly, y);
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hx &= 0x7fffffffffffffffULL;
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hy &= 0x7fffffffffffffffULL;
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#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN
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/* For the preferred quiet NaN convention, this operation is a
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comparison of the representations of the absolute values of the
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arguments. If both arguments are NaNs, invert the
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quiet/signaling bit so comparing that way works. */
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if ((hx > 0x7fff000000000000ULL || (hx == 0x7fff000000000000ULL
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&& lx != 0))
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&& (hy > 0x7fff000000000000ULL || (hy == 0x7fff000000000000ULL
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&& ly != 0)))
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{
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hx ^= 0x0000800000000000ULL;
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hy ^= 0x0000800000000000ULL;
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}
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#endif
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return hx < hy || (hx == hy && lx <= ly);
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}
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libm_alias_ldouble (__totalordermag, totalordermag)
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