summaryrefslogtreecommitdiff
path: root/sysdeps/x86_64/fpu/s_copysignf.S
blob: 9dd3101c2501d8f9b7df099f50271c2b3366f948 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/* copy sign, double version.
   Copyright (C) 2002, 2006, 2012 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Andreas Jaeger <aj@suse.de>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <machine/asm.h>

	.section .rodata

	.align ALIGNARG(4)
	ASM_TYPE_DIRECTIVE(mask,@object)
mask:
	.byte 0xff, 0xff, 0xff, 0x7f
	ASM_SIZE_DIRECTIVE(mask)

#ifdef PIC
#define MO(op) op##(%rip)
#else
#define MO(op) op
#endif

	.text
ENTRY(__copysignf)
	movss	MO(mask),%xmm3
	andps	%xmm3,%xmm0
	andnps	%xmm1,%xmm3
	orps	%xmm3,%xmm0
	retq
END (__copysignf)

weak_alias (__copysignf, copysignf)