xref: /titanic_51/usr/src/lib/libm/i386/src/floorl.s (revision 25c28e83beb90e7c80452a7c818c5e6f73a07dc8)
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 2006 Sun Microsystems, Inc.  All rights reserved.
26 * Use is subject to license terms.
27 */
28
29	.file	"floorl.s"
30
31#include "libm.h"
32LIBM_ANSI_PRAGMA_WEAK(ceill,function)
33LIBM_ANSI_PRAGMA_WEAK(floorl,function)
34#include "libm_synonyms.h"
35
36	ENTRY(ceill)
37	subl	$8,%esp
38	fstcw	(%esp)
39	fldt	12(%esp)
40	movw	(%esp),%cx
41	orw	$0x0c00,%cx
42	xorw	$0x0400,%cx
43	movw	%cx,4(%esp)
44	fldcw	4(%esp)			/ set RD = up
45	frndint
46	fstcw	4(%esp)			/ restore RD
47	movw	4(%esp),%dx
48	andw	$0xf3ff,%dx
49	movw	(%esp),%cx
50	andw	$0x0c00,%cx
51	orw	%dx,%cx
52	movw	%cx,(%esp)
53	fldcw	(%esp)			/ restore RD
54	addl	$8,%esp
55	ret
56	.align	4
57	SET_SIZE(ceill)
58
59
60	ENTRY(floorl)
61	subl	$8,%esp
62	fstcw	(%esp)
63	fldt	12(%esp)
64	movw	(%esp),%cx
65	orw	$0x0c00,%cx
66	xorw	$0x0800,%cx
67	movw	%cx,4(%esp)
68	fldcw	4(%esp)			/ set RD = down
69	frndint
70	fstcw	4(%esp)			/ restore RD
71	movw	4(%esp),%dx
72	andw	$0xf3ff,%dx
73	movw	(%esp),%cx
74	andw	$0x0c00,%cx
75	orw	%dx,%cx
76	movw	%cx,(%esp)
77	fldcw	(%esp)			/ restore RD
78	addl	$8,%esp
79	ret
80	.align	4
81	SET_SIZE(floorl)
82