xref: /titanic_51/usr/src/lib/libm/amd64/src/fmodf.s (revision b819cea2f73f98c5662230cc9affc8cc84f77fcf)
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
23 */
24/*
25 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
26 * Use is subject to license terms.
27 */
28
29        .file "fmodf.s"
30
31#include "libm.h"
32LIBM_ANSI_PRAGMA_WEAK(fmodf,function)
33
34	ENTRY(fmodf)
35	push	%rbp
36	movq	%rsp,%rbp
37	subq	$16,%rsp
38	movss	%xmm1,-8(%rbp)
39	movss	%xmm0,-4(%rbp)
40	flds	-8(%rbp)		/ load arg y
41	flds	-4(%rbp)		/ load arg x
42.loop:
43	fprem				/ partial remainder
44	fstsw	%ax			/ store status word
45	andw	$0x400,%ax		/ check whether reduction complete
46	jne	.loop			/ loop while reduction incomplete
47	fstps	-4(%rbp)
48	movss	-4(%rbp),%xmm0
49	fstp	%st(0)
50	leave
51	ret
52	.align	4
53	SET_SIZE(fmodf)
54