glibc/sysdeps/x86_64/fpu/s_copysign.S
Andreas Jaeger 7c9466bc76 Update.
2002-08-31  Andreas Jaeger  <aj@suse.de>

	* sysdeps/x86_64/fpu/s_copysign.S: Fix algorithm.

	* sysdeps/x86_64/fpu/libm-test-ulps: Add ulps for double tests.
2002-08-31 10:33:26 +00:00

53 lines
1.5 KiB
ArmAsm

/* copy sign, double version.
Copyright (C) 2002 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <machine/asm.h>
#ifdef __ELF__
.section .rodata
#else
.text
#endif
.align ALIGNARG(4)
ASM_TYPE_DIRECTIVE(signmask,@object)
signmask:
.byte 0, 0, 0, 0, 0, 0, 0, 0x80
.byte 0, 0, 0, 0, 0, 0, 0, 0
othermask:
.byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f
.byte 0, 0, 0, 0, 0, 0, 0, 0
ASM_SIZE_DIRECTIVE(othermask)
#ifdef PIC
#define MO(op) op##(%rip)
#else
#define MO(op) op
#endif
ENTRY(__copysign)
andpd MO(othermask),%xmm0
andpd MO(signmask),%xmm1
orpd %xmm1,%xmm0
ret
END (__copysign)
weak_alias (__copysign, copysign)