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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/*!
\headerfile <QtEndian>
\title Endian Conversion Functions
\ingroup funclists
\brief The <QtEndian> header provides functions to convert between
little and big endian representations of numbers.
*/
/*!
\fn T qFromBigEndian(const uchar *src)
\since 4.3
\relates <QtEndian>
Reads a big-endian number from memory location \a src and returns the number in the
host byte order representation.
On CPU architectures where the host byte order is little-endian (such as x86) this
will swap the byte order; otherwise it will just read from \a src.
\note Template type \c{T} can either be a qint16, qint32 or qint64. Other types of
integers, e.g., qlong, are not applicable.
There are no data alignment constraints for \a src.
\sa qFromLittleEndian()
\sa qToBigEndian()
\sa qToLittleEndian()
*/
/*!
\fn T qFromBigEndian(T src)
\since 4.3
\relates <QtEndian>
\overload
Converts \a src from big-endian byte order and returns the number in host byte order
representation of that number.
On CPU architectures where the host byte order is little-endian (such as x86) this
will return \a src with the byte order swapped; otherwise it will return \a src
unmodified.
*/
/*!
\fn T qFromLittleEndian(const uchar *src)
\since 4.3
\relates <QtEndian>
Reads a little-endian number from memory location \a src and returns the number in
the host byte order representation.
On CPU architectures where the host byte order is big-endian (such as PowerPC) this
will swap the byte order; otherwise it will just read from \a src.
\note Template type \c{T} can either be a qint16, qint32 or qint64. Other types of
integers, e.g., qlong, are not applicable.
There are no data alignment constraints for \a src.
\sa qFromBigEndian()
\sa qToBigEndian()
\sa qToLittleEndian()
*/
/*!
\fn T qFromLittleEndian(T src)
\since 4.3
\relates <QtEndian>
\overload
Converts \a src from little-endian byte order and returns the number in host byte
order representation of that number.
On CPU architectures where the host byte order is big-endian (such as PowerPC) this
will return \a src with the byte order swapped; otherwise it will return \a src
unmodified.
*/
/*!
\fn void qToBigEndian(T src, uchar *dest)
\since 4.3
\relates <QtEndian>
Writes the number \a src with template type \c{T} to the memory location at \a dest
in big-endian byte order.
Note that template type \c{T} can only be an integer data type (signed or unsigned).
There are no data alignment constraints for \a dest.
\sa qFromBigEndian()
\sa qFromLittleEndian()
\sa qToLittleEndian()
*/
/*!
\fn T qToBigEndian(T src)
\since 4.3
\relates <QtEndian>
\overload
Converts \a src from host byte order and returns the number in big-endian byte order
representation of that number.
On CPU architectures where the host byte order is little-endian (such as x86) this
will return \a src with the byte order swapped; otherwise it will return \a src
unmodified.
*/
/*!
\fn void qToLittleEndian(T src, uchar *dest)
\since 4.3
\relates <QtEndian>
Writes the number \a src with template type \c{T} to the memory location at \a dest
in little-endian byte order.
Note that template type \c{T} can only be an integer data type (signed or unsigned).
There are no data alignment constraints for \a dest.
\sa qFromBigEndian()
\sa qFromLittleEndian()
\sa qToBigEndian()
*/
/*!
\fn T qToLittleEndian(T src)
\since 4.3
\relates <QtEndian>
\overload
Converts \a src from host byte order and returns the number in little-endian byte
order representation of that number.
On CPU architectures where the host byte order is big-endian (such as PowerPC) this
will return \a src with the byte order swapped; otherwise it will return \a src
unmodified.
*/
|
