Attachment 65787 Details for Bug 53705 – sincos

sincos

s_sincos.S (text/plain), 1.51 KB, created by wbrana on 2012-08-19 17:52:45 UTC

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Creator: wbrana

Created: 2012-08-19 17:52:45 UTC

Size: 1.51 KB

patch

obsolete

>/* Compute sine and cosine of argument.
>   Copyright (C) 1997, 2000, 2001, 2005 Free Software Foundation, Inc.
>   This file is part of the GNU C Library.
>   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
>
>   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>
>#include "bp-sym.h"
>#include "bp-asm.h"
>
>#define PARMS	LINKAGE		/* no space for saved regs */
>#define ANGLE	PARMS
>#define SINP	ANGLE+12
>#define COSP	SINP+PTR_SIZE
>
>	.text
>ENTRY (BP_SYM (__sincos))
>	ENTER
>
>	movsd	%xmm0, -8(%rsp)
>	fldl	-8(%rsp)
>	fsincos
>	fnstsw	%ax
>	testl	$0x400,%eax
>	jnz	1f
>	fstpl	(%rsi)
>	fstpl	(%rdi)
>
>	LEAVE
>	retq
>
>1:	fldpi
>	fadd	%st(0)
>	fxch	%st(1)
>2:	fprem1
>	fnstsw	%ax
>	testl	$0x400,%eax
>	jnz	2b
>	fstp	%st(1)
>	fsincos
>	fstpl	(%rsi)
>	fstpl	(%rdi)
>
>	LEAVE
>	retq
>END (BP_SYM (__sincos))
>weak_alias (BP_SYM (__sincos), BP_SYM (sincos))

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