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    <p>There is no standard solution, but it is fairly easy to write yourself.</p> <p>Off the top of my head, an outline could look like this:</p> <pre><code>// Macro to be able to switch easily between encodings. Just for convenience #define WriteBuffer WriteBufferBE // Generic template as interface specification. Not implemented itself // Takes buffer (of sufficient size) and value, returns number of bytes written template &lt;typename T&gt; size_t WriteBufferBE(char* buffer, const T&amp; value); template &lt;typename T&gt; size_t WriteBufferLE(char* buffer, const T&amp; value); // Specializations for specific types template &lt;&gt; size_t WriteBufferBE(char* buffer, const UINT32&amp; value) { buffer[0] = (value &gt;&gt; 24) &amp; 0xFF; buffer[1] = (value &gt;&gt; 16) &amp; 0xFF; buffer[2] = (value &gt;&gt; 8) &amp; 0xFF; buffer[3] = (value) &amp; 0xFF; return 4; } template &lt;&gt; size_t WriteBufferBE(char* buffer, const UINT16&amp; value) { buffer[0] = (value &gt;&gt; 8) &amp; 0xFF; buffer[1] = (value) &amp; 0xFF; return 2; } template &lt;&gt; size_t WriteBufferLE(char* buffer, const UINT32&amp; value) { buffer[0] = (value) &amp; 0xFF; buffer[1] = (value &gt;&gt; 8) &amp; 0xFF; buffer[2] = (value &gt;&gt; 16) &amp; 0xFF; buffer[3] = (value &gt;&gt; 24) &amp; 0xFF; return 4; } template &lt;&gt; size_t WriteBufferLE(char* buffer, const UINT16&amp; value) { buffer[0] = (value) &amp; 0xFF; buffer[1] = (value &gt;&gt; 8) &amp; 0xFF; return 2; } // Other types left as an exercise. Can use the existing functions! // Usage: loc += writeBuffer(&amp;buffer[loc], dwordData); </code></pre>
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    1. POmemcpy for specific byteorder c/c++
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    1. COI like this one because it saved a function call with big Endian write, also I have a similar function for reading from the buffer :-)
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    2. COdo you know if calling this made function cost as much as calling a memcpy by any chance.
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    3. CO@abdul: They should perform equivalent to memcpy. They can easily be inlined by the compiler and their implementation pattern is used often enough that most optimisers recognize it and produce the most efficient code possible (sometimes even merging a sequence of byte-moves to a (d)word move).
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