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 push %rbp
38 movq %rsp,%rbp
39 subq $16,%rsp
40 movlpd %xmm1,-16(%rbp)
41 movlpd %xmm0,-8(%rbp)
42
43 ucomisd %xmm0,%xmm1 / if x or y is NaN, use fprem1
44 jp 1f
45
46 movl -12(%rbp),%eax / eax <-- hi_32(y)
47 andl $0x7fffffff,%eax / eax <-- hi_32(|y|)
48 orl -16(%rbp),%eax / eax <-- lo_32(y)|hi_32(|y|)
49 je .yzero_or_xinf
50
51 movl -4(%rbp),%eax / eax <-- hi_32(x)
52 andl $0x7fffffff,%eax / eax <-- hi_32(|x|)
53 cmpl $0x7ff00000,%eax
54 jne 1f
55 cmpl $0,-8(%rbp)
56 je .yzero_or_xinf
57 1:
58 fldl -16(%rbp) / y
59 fldl -8(%rbp) / x
60 .rem_loop:
61 fprem1 / partial remainder
62 fstsw %ax / store status word
63 andw $0x400,%ax / check for incomplete reduction
64 jne .rem_loop / while incomplete, do fprem1 again
65 fstpl -8(%rbp)
66 movsd -8(%rbp),%xmm0
67 fstp %st(0)
68 leave
69 ret
70
71 .yzero_or_xinf:
72 PIC_SETUP(1)
73 movl $28,%edi
74 movl $2,%eax
75 call PIC_F(_SVID_libm_err)
76 PIC_WRAPUP
77 leave
78 ret
79 .align 4
80 SET_SIZE(remainder)
--- EOF ---