forked from boostorg/endian
Add docs for BOOST_ENDIAN_DEPRECATED_NAMES compatibility. Fix inspect issues.
This commit is contained in:
@ -1,4 +1,4 @@
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<html>
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<html>
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<head>
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<meta http-equiv="Content-Language" content="en-us">
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@ -17,7 +17,7 @@
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<tr>
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<td>
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<a href="../../../index.html">
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<img src="http://www.boost.org/boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<img src="../../../boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<td align="middle">
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<b>
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<font size="6">Endian Arithmetic Types</font> </b>
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@ -109,10 +109,11 @@ using namespace boost::endian;
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namespace
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{
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// This is an extract from a very widely used GIS file format. It seems odd
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// to mix big and little endians in the same file - but this is a real-world
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// format and users wishing to write low level code manipulating these files
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// must deal with the mixed endianness.
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// This is an extract from a very widely used GIS file format.
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// Why the designer decided to mix big and little endians in
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// the same file is not known. But this is a real-world format
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// and users wishing to write low level code manipulating these
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// files have to deal with the mixed endianness.
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struct header
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{
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@ -136,11 +137,13 @@ int main(int, char* [])
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h.version = 1;
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h.shape_type = 0x01020304;
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// Low-level I/O such as POSIX read/write or <cstdio> fread/fwrite is sometimes
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// used for binary file operations when ultimate efficiency is important. Such
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// I/O is often performed in some C++ wrapper class, but to drive home the
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// point that endian integers are often used in fairly low-level code that does
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// bulk I/O operations, <cstdio> fopen/fwrite is used for I/O in this example.
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// Low-level I/O such as POSIX read/write or <cstdio>
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// fread/fwrite is sometimes used for binary file operations
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// when ultimate efficiency is important. Such I/O is often
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// performed in some C++ wrapper class, but to drive home the
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// point that endian integers are often used in fairly
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// low-level code that does bulk I/O operations, <cstdio>
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// fopen/fwrite is used for I/O in this example.
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std::FILE* fi = std::fopen(filename, "wb"); // MUST BE BINARY
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@ -205,8 +208,9 @@ enum class align {no, yes}; </pre>
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</blockquote>
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<p>One class template is provided:</p>
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<blockquote>
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<pre>template <order Order, typename T, std::size_t n_bits, align A = align::no>
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class endian_arithmetic;
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<pre>template <order Order, typename T, std::size_t n_bits,
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align Align = align::no>
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class endian_arithmetic;
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</pre>
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</blockquote>
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<p>Typedefs, such as <code>big_int32_t</code>, provide convenient naming
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@ -366,9 +370,10 @@ usual operations on integers are supplied.</p>
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enum class <a name="alignment">align</a> {no, yes};
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template <order Order, class T, std::size_t n_bits, align A = align::no>
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template <order Order, class T, std::size_t n_bits,
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align Align = align::no>
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class endian_arithmetic
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: public endian_buffer<Order, T, n_bits, A>
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: public endian_buffer<Order, T, n_bits, Align>
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{
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public:
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typedef T value_type;
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@ -380,8 +385,8 @@ usual operations on integers are supplied.</p>
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endian_arithmetic& <a href="#operator-eq">operator=</a>(T v) noexcept;
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<a href="#operator-T">operator value_type</a>() const noexcept;
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value_type value() const noexcept; // exposition only; see endian_buffer
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const char* <a href="#data">data</a>() const noexcept; // exposition only; see endian_buffer
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value_type value() const noexcept; // for exposition; see endian_buffer
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const char* <a href="#data">data</a>() const noexcept; // for exposition; see endian_buffer
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// arithmetic operations
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// note that additional operations are provided by the value_type
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@ -417,35 +422,35 @@ usual operations on integers are supplied.</p>
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// typedefs
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// aligned big endian floating point types
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typedef endian<order::big, float, 32, align::yes> big_float32_t;
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typedef endian<order::big, double, 64, align::yes> big_float64_t;
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typedef endian<order::big, float, 32, align::yes> big_float32_t;
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typedef endian<order::big, double, 64, align::yes> big_float64_t;
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// aligned little endian floating point types
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typedef endian<order::little, float, 32, align::yes> little_float32_t;
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typedef endian<order::little, double, 64, align::yes> little_float64_t;
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typedef endian<order::little, float, 32, align::yes> little_float32_t;
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typedef endian<order::little, double, 64, align::yes> little_float64_t;
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// unaligned big endian floating point types
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typedef endian<order::big, float, 32, align::no> big_float32un_t;
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typedef endian<order::big, double, 64, align::no> big_float64un_t;
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typedef endian<order::big, float, 32, align::no> big_float32_ut;
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typedef endian<order::big, double, 64, align::no> big_float64_ut;
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// unaligned little endian floating point types
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typedef endian<order::little, float, 32, align::no> little_float32un_t;
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typedef endian<order::little, double, 64, align::no> little_float64un_t;
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typedef endian<order::little, float, 32, align::no> little_float32_ut;
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typedef endian<order::little, double, 64, align::no> little_float64_ut;
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// aligned big endian signed integer types
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typedef endian<order::big, int16_t, 16, align::yes> big_int16_t;
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typedef endian<order::big, int32_t, 32, align::yes> big_int32_t;
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typedef endian<order::big, int64_t, 64, align::yes> big_int64_t;
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typedef endian<order::big, int16_t, 16, align::yes> big_int16_t;
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typedef endian<order::big, int32_t, 32, align::yes> big_int32_t;
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typedef endian<order::big, int64_t, 64, align::yes> big_int64_t;
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// aligned big endian unsigned integer types
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typedef endian<order::big, uint16_t, 16, align::yes> big_uint16_t;
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typedef endian<order::big, uint32_t, 32, align::yes> big_uint32_t;
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typedef endian<order::big, uint64_t, 64, align::yes> big_uint64_t;
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typedef endian<order::big, uint16_t, 16, align::yes> big_uint16_t;
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typedef endian<order::big, uint32_t, 32, align::yes> big_uint32_t;
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typedef endian<order::big, uint64_t, 64, align::yes> big_uint64_t;
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// aligned little endian signed integer types
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typedef endian<order::little, int16_t, 16, align::yes> little_int16_t;
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typedef endian<order::little, int32_t, 32, align::yes> little_int32_t;
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typedef endian<order::little, int64_t, 64, align::yes> little_int64_t;
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typedef endian<order::little, int16_t, 16, align::yes> little_int16_t;
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typedef endian<order::little, int32_t, 32, align::yes> little_int32_t;
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typedef endian<order::little, int64_t, 64, align::yes> little_int64_t;
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// aligned little endian unsigned integer types
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typedef endian<order::little, uint16_t, 16, align::yes> little_uint16_t;
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@ -672,7 +677,7 @@ differs from endian representation size. Vicente Botet and other reviewers
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suggested supporting floating point types.</p>
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<hr>
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<p>Last revised:
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->17 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38899" --></p>
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->19 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38903" --></p>
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<p>© Copyright Beman Dawes, 2006-2009, 2013</p>
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<p>Distributed under the Boost Software License, Version 1.0. See
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<a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/ LICENSE_1_0.txt</a></p>
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@ -17,7 +17,7 @@
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<tr>
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<td>
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<a href="../../../index.html">
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<img src="http://www.boost.org/boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<img src="../../../boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<td align="middle">
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<b>
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<font size="6">Endian Buffer Types</font> </b>
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@ -195,8 +195,9 @@ enum class align {no, yes}; </pre>
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</blockquote>
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<p>One class template is provided:</p>
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<blockquote>
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<pre>template <order Order, typename T, std::size_t Nbits, align A = align::no>
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class endian_buffer;
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<pre>template <order Order, typename T, std::size_t Nbits,
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align Align = align::no>
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class endian_buffer;
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</pre>
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</blockquote>
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<p>Typedefs, such as <code>big_int32_buf_t</code>, provide convenient naming
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@ -356,7 +357,8 @@ usual operations on integers are supplied.</p>
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enum class <a name="alignment">align</a> {no, yes};
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template <order Order, class T, std::size_t Nbits, align Align = align::no>
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template <order Order, class T, std::size_t Nbits,
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align Align = align::no>
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class endian_buffer
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{
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public:
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@ -648,7 +650,7 @@ any Boost object libraries.</p>
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</ul>
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<hr>
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<p>Last revised:
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->17 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38899" --></p>
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->19 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38903" --></p>
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<p>© Copyright Beman Dawes, 2006-2009, 2013</p>
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<p>Distributed under the Boost Software License, Version 1.0. See
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<a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/ LICENSE_1_0.txt</a></p>
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@ -14,7 +14,7 @@
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<tr>
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<td width="339">
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<a href="../../../index.html">
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<img src="http://www.boost.org/boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<img src="../../../boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<td align="middle" width="1253">
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<font size="6"><b>Choosing the Approach</b></font></td>
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</tr>
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@ -400,7 +400,7 @@ arithmetic approach</a>.</p>
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<hr>
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<p>Last revised:
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->17 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38899" --></p>
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->19 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38903" --></p>
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<p>© Copyright Beman Dawes, 2011, 2013, 2014</p>
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<p>Distributed under the Boost Software License, Version 1.0. See
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<a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/ LICENSE_1_0.txt</a></p>
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@ -1,4 +1,4 @@
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<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns="http://www.w3.org/TR/REC-html40">
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<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns="http://www.w3.org/TR/REC-html40">
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<head>
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<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
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@ -15,7 +15,7 @@
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<tr>
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<td>
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<a href="../../../index.html">
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<img src="http://www.boost.org/boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86" ></a></td>
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<img src="../../../boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86" ></a></td>
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<td align="middle">
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<b>
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<font size="6">Endian Conversion Functions</font></b></td>
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@ -367,7 +367,7 @@ Pierre Talbot provided the <code>int8_t endian_reverse()</code> and templated
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<code>endian_reverse_inplace()</code> implementations.</p>
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<hr>
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<p>Last revised:
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->17 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38899" --></p>
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->19 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38903" --></p>
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<p>© Copyright Beman Dawes, 2011, 2013</p>
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<p>Distributed under the Boost Software License, Version 1.0. See <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/ LICENSE_1_0.txt</a></p>
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@ -15,7 +15,7 @@
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<tr>
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<td width="339">
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<a href="../../../index.html">
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<img src="http://www.boost.org/boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<img src="../../../boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<td align="middle" width="1253">
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<b>
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<font size="6">Endian Library</font></b></td>
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@ -56,6 +56,7 @@
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requested by formal review</a><br>
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<a href="#Other-changes-since-formal-review">Other changes since
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formal review</a><br>
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<a href="#Compatibility">Compatibility with interim releases</a><br>
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<a href="#Acknowledgements">Acknowledgements</a><br>
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</td>
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</tr>
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@ -445,8 +446,9 @@ page for details.</p>
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<h3><a name="Other-changes-since-formal-review">Other changes since formal
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review</a></h3>
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<ul>
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<li>Headers have been renamed to <code>endian/arithmetic.hpp</code> and
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<code>endian/conversion.hpp</code>. <code>endian/buffers.hpp</code> has been
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<li>Header <code>boost/endian/endian.hpp</code> has been renamed to <code>
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boost/endian/arithmetic.hpp</code>. Headers
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<code>boost/endian/conversion.hpp</code> and <code>boost/endian/buffers.hpp</code> have been
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added.
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Infrastructure file names were changed accordingly.</li>
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<li>The endian arithmetic type aliases have been renamed,
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@ -473,6 +475,23 @@ review</a></h3>
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<li>Acknowledgements have been updated.</li>
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</ul>
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<h2><a name="Compatibility">Compatibility</a> with interim releases</h2>
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<p dir="ltr">Prior to the official Boost release, class template <code>
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endian_arithmetic</code> has been used for a decade or more with the same
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functionality but under the name <code>endian</code>. Other names also changed
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in the official release. If the macro <code>BOOST_ENDIAN_DEPRECATED_NAMES</code>
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is defined, those old now deprecated names are still supported. However, the
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class template <code>endian</code> name is only provided for compilers
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supporting C++11 template aliases. For C++03 compilers, the name will have to be
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changed to <code>endian_arithmetic</code>.</p>
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<p>To support backward header compatibility, deprecated header <code>boost/endian/endian.hpp</code>
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forwards to <code>boost/endian/arithmetic.hpp</code>. It requires <code>
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BOOST_ENDIAN_DEPRECATED_NAMES</code> be defined. It should only be used while
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transitioning to the official Boost release of the library as it will be removed
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in some future release.</p>
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<h2><a name="Acknowledgements">Acknowledgements</a></h2>
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<p>Comments and suggestions were received from Adder, Benaka Moorthi,
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Christopher Kohlhoff, Cliff Green, Daniel James, Gennaro Proto, Giovanni Piero
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@ -484,7 +503,7 @@ Blechmann, Tim Moore, tymofey, Tomas Puverle, Vincente Botet, Yuval Ronen and
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Vitaly Budovsk. Apologies if anyone has been missed.</p>
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<hr>
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<p>Last revised:
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->15 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38895" --></p>
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->19 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38903" --></p>
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<p>© Copyright Beman Dawes, 2011, 2013</p>
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<p>Distributed under the Boost Software License, Version 1.0. See
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<a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/ LICENSE_1_0.txt</a></p>
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@ -13,7 +13,7 @@
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<tr>
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<td width="339">
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<a href="../../../index.html">
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<img src="http://www.boost.org/boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<img src="../../../boost.png" alt="Boost logo" align="middle" border="0" width="277" height="86"></a></td>
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<td align="middle" width="1253">
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<b>
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<font size="6">Endian </font></b><font size="6"><b>Mini-Review</b></font></td>
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@ -113,8 +113,8 @@ might used inadvertently or inappropriately. The impact of adding an endian_buff
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<p><b>11. Stream insertion and extraction of the endian integer/float types should
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be documented and included in the test coverage.</b></p>
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<blockquote>
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<p>Done. See <a href="types.html#Stream-inserter">Stream inserter</a> and
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<a href="types.html#Stream-extractor">Stream extractor</a>.</p>
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<p>Done. See <a href="buffers.html#Stream-inserter">Stream inserter</a> and
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<a href="buffers.html#Stream-extractor">Stream extractor</a>.</p>
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</blockquote>
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<p><b>12. Binary I/O support that was investigated during development of the Endian
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library should be put up for mini-review for inclusion in the Boost I/O
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@ -140,7 +140,7 @@ might used inadvertently or inappropriately. The impact of adding an endian_buff
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</blockquote>
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<hr>
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<p>Last revised:
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->04 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38892" --></p>
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->19 January, 2015<!--webbot bot="Timestamp" endspan i-checksum="38903" --></p>
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<p>© Copyright Beman Dawes, 2014</p>
|
||||
<p>Distributed under the Boost Software License, Version 1.0. See
|
||||
<a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/ LICENSE_1_0.txt</a></p>
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Reference in New Issue
Block a user