Blame sysdeps/x86_64/fpu/s_copysign.S

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/* copy sign, double version.
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   Copyright (C) 2002-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   Contributed by Andreas Jaeger <aj@suse.de>, 2002.
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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 <machine/asm.h>
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#include <libm-alias-double.h>
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	.section .rodata.cst16,"aM",@progbits,16
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	.align ALIGNARG(4)
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	.type signmask,@object
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signmask:
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	.byte 0, 0, 0, 0, 0, 0, 0, 0x80
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	.byte 0, 0, 0, 0, 0, 0, 0, 0
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	ASM_SIZE_DIRECTIVE(signmask)
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	.type othermask,@object
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othermask:
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	.byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
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	.byte 0, 0, 0, 0, 0, 0, 0, 0
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	ASM_SIZE_DIRECTIVE(othermask)
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#ifdef PIC
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#define MO(op) op##(%rip)
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#else
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#define MO(op) op
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#endif
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	.text
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ENTRY(__copysign)
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	andpd MO(othermask),%xmm0
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	andpd MO(signmask),%xmm1
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	orpd %xmm1,%xmm0
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	ret
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END (__copysign)
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libm_alias_double (__copysign, copysign)