5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>
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 "remainder.s"
30
31 #include "libm.h"
32 LIBM_ANSI_PRAGMA_WEAK(remainder,function)
33 #include "libm_synonyms.h"
34 #include "libm_protos.h"
35
36 ENTRY(remainder)
37 pushl %ebp
38 movl %esp,%ebp
39 fldl 16(%esp) / load arg y
40 fldl 8(%esp) / load arg x
41 fucom
42 fnstsw %ax
43 sahf
44 jp .rem_loop / if x or y is NaN, use fprem1
45
46 movl 20(%esp),%eax / eax <-- hi_32(y)
47 andl $0x7fffffff,%eax / eax <-- hi_32(|y|)
48 orl 16(%esp),%eax / eax <-- lo_32(y)|hi_32(|y|)
49 je .yzero_or_xinf
50
51 movl 12(%esp),%eax / eax <-- hi_32(x)
52 andl $0x7fffffff,%eax / eax <-- hi_32(|x|)
53 cmpl $0x7ff00000,%eax
54 jne .rem_loop
55 cmpl $0,8(%esp)
56 je .yzero_or_xinf
57
58 .rem_loop:
59 fprem1 / partial remainder
60 fstsw %ax / store status word
61 andw $0x400,%ax / check for incomplete reduction
62 jne .rem_loop / while incomplete, do fprem1 again
63 fstp %st(1)
64 leave
65 ret
66
67 .yzero_or_xinf:
68 PIC_SETUP(1)
69 fstp %st(0) / x
70 fstp %st(0) / empty NPX stack
71 pushl $28 / case 28 in _SVID_libm_err
72 pushl 20(%ebp) / pass y
73 pushl 16(%ebp)
74 pushl 12(%ebp) / pass x
75 pushl 8(%ebp)
76 call PIC_F(_SVID_libm_err)
77 addl $20,%esp
78 PIC_WRAPUP
79 leave
80 ret
81 .align 4
82 SET_SIZE(remainder)
--- EOF ---