/*
* 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 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
.file "remainder.s"
#include "libm.h"
LIBM_ANSI_PRAGMA_WEAK(remainder,function)
#include "libm_protos.h"
ENTRY(remainder)
pushl %ebp
movl %esp,%ebp
fldl 16(%esp) / load arg y
fldl 8(%esp) / load arg x
fucom
fnstsw %ax
sahf
jp .rem_loop / if x or y is NaN, use fprem1
movl 20(%esp),%eax / eax <-- hi_32(y)
andl $0x7fffffff,%eax / eax <-- hi_32(|y|)
orl 16(%esp),%eax / eax <-- lo_32(y)|hi_32(|y|)
je .yzero_or_xinf
movl 12(%esp),%eax / eax <-- hi_32(x)
andl $0x7fffffff,%eax / eax <-- hi_32(|x|)
cmpl $0x7ff00000,%eax
jne .rem_loop
cmpl $0,8(%esp)
je .yzero_or_xinf
.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
fstp %st(1)
leave
ret
.yzero_or_xinf:
PIC_SETUP(1)
fstp %st(0) / x
fstp %st(0) / empty NPX stack
pushl $28 / case 28 in _SVID_libm_err
pushl 20(%ebp) / pass y
pushl 16(%ebp)
pushl 12(%ebp) / pass x
pushl 8(%ebp)
call PIC_F(_SVID_libm_err)
addl $20,%esp
PIC_WRAPUP
leave
ret
.align 4
SET_SIZE(remainder)