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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
.ident "@(#)remainder.s 1.2 06/01/23 SMI"
.file "remainder.s"
#include "libm.h"
LIBM_ANSI_PRAGMA_WEAK(remainder,function)
#include "libm_synonyms.h"
#include "libm_protos.h"
ENTRY(remainder)
push %rbp
movq %rsp,%rbp
subq $16,%rsp
movlpd %xmm1,-16(%rbp)
movlpd %xmm0,-8(%rbp)
ucomisd %xmm0,%xmm1 / if x or y is NaN, use fprem1
jp 1f
movl -12(%rbp),%eax / eax <-- hi_32(y)
andl $0x7fffffff,%eax / eax <-- hi_32(|y|)
orl -16(%rbp),%eax / eax <-- lo_32(y)|hi_32(|y|)
je .yzero_or_xinf
movl -4(%rbp),%eax / eax <-- hi_32(x)
andl $0x7fffffff,%eax / eax <-- hi_32(|x|)
cmpl $0x7ff00000,%eax
jne 1f
cmpl $0,-8(%rbp)
je .yzero_or_xinf
1:
fldl -16(%rbp) / y
fldl -8(%rbp) / x
.rem_loop:
fprem1 / partial remainder
fstsw %ax / store status word
andw $0x400,%ax / check for incomplete reduction
jne .rem_loop / while incomplete, do fprem1 again
fstpl -8(%rbp)
movsd -8(%rbp),%xmm0
fstp %st(0)
leave
ret
.yzero_or_xinf:
PIC_SETUP(1)
movl $28,%edi
movl $2,%eax
call PIC_F(_SVID_libm_err)
PIC_WRAPUP
leave
ret
.align 4
SET_SIZE(remainder)
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