author | William Roberts <williamr@symbian.org> |
Mon, 21 Jun 2010 22:38:13 +0100 | |
branch | GCC_SURGE |
changeset 27 | 93b982ccede2 |
parent 18 | 2f34d5167611 |
child 33 | 3e2da88830cd |
permissions | -rw-r--r-- |
0 | 1 |
/**************************************************************************** |
2 |
** |
|
18
2f34d5167611
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
3 |
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
0 | 4 |
** All rights reserved. |
5 |
** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 |
** |
|
7 |
** This file is part of the documentation of the Qt Toolkit. |
|
8 |
** |
|
9 |
** $QT_BEGIN_LICENSE:LGPL$ |
|
10 |
** No Commercial Usage |
|
11 |
** This file contains pre-release code and may not be distributed. |
|
12 |
** You may use this file in accordance with the terms and conditions |
|
13 |
** contained in the Technology Preview License Agreement accompanying |
|
14 |
** this package. |
|
15 |
** |
|
16 |
** GNU Lesser General Public License Usage |
|
17 |
** Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 |
** General Public License version 2.1 as published by the Free Software |
|
19 |
** Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 |
** packaging of this file. Please review the following information to |
|
21 |
** ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 |
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 |
** |
|
24 |
** In addition, as a special exception, Nokia gives you certain additional |
|
25 |
** rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 |
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 |
** |
|
28 |
** If you have questions regarding the use of this file, please contact |
|
29 |
** Nokia at qt-info@nokia.com. |
|
30 |
** |
|
31 |
** |
|
32 |
** |
|
33 |
** |
|
34 |
** |
|
35 |
** |
|
36 |
** |
|
37 |
** |
|
38 |
** $QT_END_LICENSE$ |
|
39 |
** |
|
40 |
****************************************************************************/ |
|
41 |
||
42 |
/*! |
|
43 |
\headerfile <QtEndian> |
|
44 |
\title Endian Conversion Functions |
|
45 |
\ingroup funclists |
|
46 |
\brief The <QtEndian> header provides functions to convert between |
|
47 |
little and big endian representations of numbers. |
|
48 |
*/ |
|
49 |
||
50 |
/*! |
|
51 |
\fn T qFromBigEndian(const uchar *src) |
|
52 |
\since 4.3 |
|
53 |
\relates <QtEndian> |
|
54 |
||
55 |
Reads a big-endian number from memory location \a src and returns the number in the |
|
56 |
host byte order representation. |
|
57 |
On CPU architectures where the host byte order is little-endian (such as x86) this |
|
58 |
will swap the byte order; otherwise it will just read from \a src. |
|
59 |
||
60 |
\note Template type \c{T} can either be a qint16, qint32 or qint64. Other types of |
|
61 |
integers, e.g., qlong, are not applicable. |
|
62 |
||
63 |
There are no data alignment constraints for \a src. |
|
64 |
||
65 |
\sa qFromLittleEndian() |
|
66 |
\sa qToBigEndian() |
|
67 |
\sa qToLittleEndian() |
|
68 |
*/ |
|
69 |
/*! |
|
70 |
\fn T qFromBigEndian(T src) |
|
71 |
\since 4.3 |
|
72 |
\relates <QtEndian> |
|
73 |
\overload |
|
74 |
||
75 |
Converts \a src from big-endian byte order and returns the number in host byte order |
|
76 |
representation of that number. |
|
77 |
On CPU architectures where the host byte order is little-endian (such as x86) this |
|
78 |
will return \a src with the byte order swapped; otherwise it will return \a src |
|
79 |
unmodified. |
|
80 |
*/ |
|
81 |
/*! |
|
82 |
\fn T qFromLittleEndian(const uchar *src) |
|
83 |
\since 4.3 |
|
84 |
\relates <QtEndian> |
|
85 |
||
86 |
Reads a little-endian number from memory location \a src and returns the number in |
|
87 |
the host byte order representation. |
|
88 |
On CPU architectures where the host byte order is big-endian (such as PowerPC) this |
|
89 |
will swap the byte order; otherwise it will just read from \a src. |
|
90 |
||
91 |
\note Template type \c{T} can either be a qint16, qint32 or qint64. Other types of |
|
92 |
integers, e.g., qlong, are not applicable. |
|
93 |
||
94 |
There are no data alignment constraints for \a src. |
|
95 |
||
96 |
\sa qFromBigEndian() |
|
97 |
\sa qToBigEndian() |
|
98 |
\sa qToLittleEndian() |
|
99 |
*/ |
|
100 |
/*! |
|
101 |
\fn T qFromLittleEndian(T src) |
|
102 |
\since 4.3 |
|
103 |
\relates <QtEndian> |
|
104 |
\overload |
|
105 |
||
106 |
Converts \a src from little-endian byte order and returns the number in host byte |
|
107 |
order representation of that number. |
|
108 |
On CPU architectures where the host byte order is big-endian (such as PowerPC) this |
|
109 |
will return \a src with the byte order swapped; otherwise it will return \a src |
|
110 |
unmodified. |
|
111 |
*/ |
|
112 |
/*! |
|
113 |
\fn void qToBigEndian(T src, uchar *dest) |
|
114 |
\since 4.3 |
|
115 |
\relates <QtEndian> |
|
116 |
||
117 |
Writes the number \a src with template type \c{T} to the memory location at \a dest |
|
118 |
in big-endian byte order. |
|
119 |
||
120 |
Note that template type \c{T} can only be an integer data type (signed or unsigned). |
|
121 |
||
122 |
There are no data alignment constraints for \a dest. |
|
123 |
||
124 |
\sa qFromBigEndian() |
|
125 |
\sa qFromLittleEndian() |
|
126 |
\sa qToLittleEndian() |
|
127 |
*/ |
|
128 |
/*! |
|
129 |
\fn T qToBigEndian(T src) |
|
130 |
\since 4.3 |
|
131 |
\relates <QtEndian> |
|
132 |
\overload |
|
133 |
||
134 |
Converts \a src from host byte order and returns the number in big-endian byte order |
|
135 |
representation of that number. |
|
136 |
On CPU architectures where the host byte order is little-endian (such as x86) this |
|
137 |
will return \a src with the byte order swapped; otherwise it will return \a src |
|
138 |
unmodified. |
|
139 |
*/ |
|
140 |
/*! |
|
141 |
\fn void qToLittleEndian(T src, uchar *dest) |
|
142 |
\since 4.3 |
|
143 |
\relates <QtEndian> |
|
144 |
||
145 |
Writes the number \a src with template type \c{T} to the memory location at \a dest |
|
146 |
in little-endian byte order. |
|
147 |
||
148 |
Note that template type \c{T} can only be an integer data type (signed or unsigned). |
|
149 |
||
150 |
There are no data alignment constraints for \a dest. |
|
151 |
||
152 |
\sa qFromBigEndian() |
|
153 |
\sa qFromLittleEndian() |
|
154 |
\sa qToBigEndian() |
|
155 |
*/ |
|
156 |
/*! |
|
157 |
\fn T qToLittleEndian(T src) |
|
158 |
\since 4.3 |
|
159 |
\relates <QtEndian> |
|
160 |
\overload |
|
161 |
||
162 |
Converts \a src from host byte order and returns the number in little-endian byte |
|
163 |
order representation of that number. |
|
164 |
On CPU architectures where the host byte order is big-endian (such as PowerPC) this |
|
165 |
will return \a src with the byte order swapped; otherwise it will return \a src |
|
166 |
unmodified. |
|
167 |
*/ |
|
168 |