1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the V4VM module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMLJS_MATH_H
#define QMLJS_MATH_H
#include <QtCore/qnumeric.h>
#include <math.h>
#if 1 //CPU(X86_64)
static inline Value add_int32(int a, int b)
{
quint8 overflow = 0;
asm ("addl %2, %1\n"
"seto %0"
: "=r" (overflow), "=r" (a)
: "r" (b), "1" (a)
:
);
if (!overflow)
return Value::fromInt32(a);
return Value::fromDouble((double)a + (double)b);
}
static inline Value sub_int32(int a, int b)
{
quint8 overflow = 0;
asm ("subl %2, %1\n"
"seto %0"
: "=r" (overflow), "=r" (a)
: "r" (b), "1" (a)
:
);
if (!overflow)
return Value::fromInt32(a);
return Value::fromDouble((double)a - (double)b);
}
static inline Value mul_int32(int a, int b)
{
quint8 overflow = 0;
asm ("imul %2, %1\n"
"seto %0"
: "=r" (overflow), "=r" (a)
: "r" (b), "1" (a)
:
);
if (!overflow)
return Value::fromInt32(a);
return Value::fromDouble((double)a * (double)b);
}
#endif
#endif
|
