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<td >Qt 5.12</td><td ><a href="qtcore-index.html">Qt Core</a></td><td ><QtEndian> - Endian Conversion Functions</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtcore-index.html">Qt 5.12.6 Reference Documentation</a></td>
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<h1 class="title"><QtEndian> - Endian Conversion Functions</h1>
<span class="subtitle"></span>
<!-- $$$<QtEndian>-brief -->
<p>The <QtEndian> header provides functions to convert between little and big endian representations of numbers. <a href="#details">More...</a></p>
<!-- @@@<QtEndian> -->
<ul>
</ul>
<a name="Types"></a>
<h2 id="Types">Types</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qint16_be-typedef">qint16_be</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qint16_le-typedef">qint16_le</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qint32_be-typedef">qint32_be</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qint32_le-typedef">qint32_le</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qint64_be-typedef">qint64_be</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qint64_le-typedef">qint64_le</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#quint16_be-typedef">quint16_be</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#quint16_le-typedef">quint16_le</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#quint32_be-typedef">quint32_be</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#quint32_le-typedef">quint32_le</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#quint64_be-typedef">quint64_be</a></b></td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#quint64_le-typedef">quint64_le</a></b></td></tr>
</table></div>
<a name="Functions"></a>
<h2 id="Functions">Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> T </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qFromBigEndian">qFromBigEndian</a></b>(T <i>src</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> T </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qFromBigEndian">qFromBigEndian</a></b>(const void *<i>src</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qFromBigEndian-2">qFromBigEndian</a></b>(const void *<i>src</i>, qsizetype <i>count</i>, void *<i>dest</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> T </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a></b>(T <i>src</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> T </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a></b>(const void *<i>src</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qFromLittleEndian-2">qFromLittleEndian</a></b>(const void *<i>src</i>, qsizetype <i>count</i>, void *<i>dest</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> T </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qToBigEndian">qToBigEndian</a></b>(T <i>src</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qToBigEndian">qToBigEndian</a></b>(T <i>src</i>, void *<i>dest</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qToBigEndian-2">qToBigEndian</a></b>(const void *<i>src</i>, qsizetype <i>count</i>, void *<i>dest</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> T </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qToLittleEndian">qToLittleEndian</a></b>(T <i>src</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qToLittleEndian">qToLittleEndian</a></b>(T <i>src</i>, void *<i>dest</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtendian.html#qToLittleEndian-2">qToLittleEndian</a></b>(const void *<i>src</i>, qsizetype <i>count</i>, void *<i>dest</i>)</td></tr>
</table></div>
<!-- $$$<QtEndian>-description -->
<div class="descr"> <a name="details"></a>
</div>
<!-- @@@<QtEndian> -->
<h2>Type Documentation</h2>
<!-- $$$qint16_be -->
<h3 class="fn" id="qint16_be-typedef"><a name="qint16_be-typedef"></a>typedef <span class="name">qint16_be</span></h3>
<p>Typedef for <a href="qbeinteger.html">QBEInteger</a><qint16>. This type is guaranteed to be stored in memory as a 16-bit big-endian signed integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#qint16-typedef">qint16</a>.</p>
<!-- @@@qint16_be -->
<!-- $$$qint16_le -->
<h3 class="fn" id="qint16_le-typedef"><a name="qint16_le-typedef"></a>typedef <span class="name">qint16_le</span></h3>
<p>Typedef for <a href="qleinteger.html">QLEInteger</a><qint16>. This type is guaranteed to be stored in memory as a 16-bit little-endian signed integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#qint16-typedef">qint16</a>.</p>
<!-- @@@qint16_le -->
<!-- $$$qint32_be -->
<h3 class="fn" id="qint32_be-typedef"><a name="qint32_be-typedef"></a>typedef <span class="name">qint32_be</span></h3>
<p>Typedef for <a href="qbeinteger.html">QBEInteger</a><qint32>. This type is guaranteed to be stored in memory as a 32-bit big-endian signed integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#qint32-typedef">qint32</a>.</p>
<!-- @@@qint32_be -->
<!-- $$$qint32_le -->
<h3 class="fn" id="qint32_le-typedef"><a name="qint32_le-typedef"></a>typedef <span class="name">qint32_le</span></h3>
<p>Typedef for <a href="qleinteger.html">QLEInteger</a><qint32>. This type is guaranteed to be stored in memory as a 32-bit little-endian signed integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#qint32-typedef">qint32</a>.</p>
<!-- @@@qint32_le -->
<!-- $$$qint64_be -->
<h3 class="fn" id="qint64_be-typedef"><a name="qint64_be-typedef"></a>typedef <span class="name">qint64_be</span></h3>
<p>Typedef for <a href="qbeinteger.html">QBEInteger</a><qint64>. This type is guaranteed to be stored in memory as a 64-bit big-endian signed integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#qint64-typedef">qint64</a>.</p>
<!-- @@@qint64_be -->
<!-- $$$qint64_le -->
<h3 class="fn" id="qint64_le-typedef"><a name="qint64_le-typedef"></a>typedef <span class="name">qint64_le</span></h3>
<p>Typedef for <a href="qleinteger.html">QLEInteger</a><qint64>. This type is guaranteed to be stored in memory as a 64-bit little-endian signed integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#qint64-typedef">qint64</a>.</p>
<!-- @@@qint64_le -->
<!-- $$$quint16_be -->
<h3 class="fn" id="quint16_be-typedef"><a name="quint16_be-typedef"></a>typedef <span class="name">quint16_be</span></h3>
<p>Typedef for <a href="qbeinteger.html">QBEInteger</a><quint16>. This type is guaranteed to be stored in memory as a 16-bit big-endian unsigned integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#quint16-typedef">quint16</a>.</p>
<!-- @@@quint16_be -->
<!-- $$$quint16_le -->
<h3 class="fn" id="quint16_le-typedef"><a name="quint16_le-typedef"></a>typedef <span class="name">quint16_le</span></h3>
<p>Typedef for <a href="qleinteger.html">QLEInteger</a><quint16>. This type is guaranteed to be stored in memory as a 16-bit little-endian unsigned integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#quint16-typedef">quint16</a>.</p>
<!-- @@@quint16_le -->
<!-- $$$quint32_be -->
<h3 class="fn" id="quint32_be-typedef"><a name="quint32_be-typedef"></a>typedef <span class="name">quint32_be</span></h3>
<p>Typedef for <a href="qbeinteger.html">QBEInteger</a><quint32>. This type is guaranteed to be stored in memory as a 32-bit big-endian unsigned integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#quint32-typedef">quint32</a>.</p>
<!-- @@@quint32_be -->
<!-- $$$quint32_le -->
<h3 class="fn" id="quint32_le-typedef"><a name="quint32_le-typedef"></a>typedef <span class="name">quint32_le</span></h3>
<p>Typedef for <a href="qleinteger.html">QLEInteger</a><quint32>. This type is guaranteed to be stored in memory as a 32-bit little-endian unsigned integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#quint32-typedef">quint32</a>.</p>
<!-- @@@quint32_le -->
<!-- $$$quint64_be -->
<h3 class="fn" id="quint64_be-typedef"><a name="quint64_be-typedef"></a>typedef <span class="name">quint64_be</span></h3>
<p>Typedef for <a href="qbeinteger.html">QBEInteger</a><quint64>. This type is guaranteed to be stored in memory as a 64-bit big-endian unsigned integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#quint64-typedef">quint64</a>.</p>
<!-- @@@quint64_be -->
<!-- $$$quint64_le -->
<h3 class="fn" id="quint64_le-typedef"><a name="quint64_le-typedef"></a>typedef <span class="name">quint64_le</span></h3>
<p>Typedef for <a href="qleinteger.html">QLEInteger</a><quint64>. This type is guaranteed to be stored in memory as a 64-bit little-endian unsigned integer on all platforms supported by Qt.</p>
<p>This typedef was introduced in Qt 5.10.</p>
<p><b>See also </b><a href="qtglobal.html#quint64-typedef">quint64</a>.</p>
<!-- @@@quint64_le -->
<h2>Function Documentation</h2>
<!-- $$$qFromBigEndian[overload1]$$$qFromBigEndianT -->
<h3 class="fn" id="qFromBigEndian"><a name="qFromBigEndian"></a><span class="type">T</span> <span class="name">qFromBigEndian</span>(<span class="type">T</span> <i>src</i>)</h3>
<p>This is an overloaded function.</p>
<p>Converts <i>src</i> 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 <i>src</i> with the byte order swapped; otherwise it will return <i>src</i> unmodified.</p>
<p>This function was introduced in Qt 4.3.</p>
<!-- @@@qFromBigEndian -->
<!-- $$$qFromBigEndian[overload1]$$$qFromBigEndianconstvoid* -->
<h3 class="fn" id="qFromBigEndian"><a name="qFromBigEndian"></a><span class="type">T</span> <span class="name">qFromBigEndian</span>(const <span class="type">void</span> *<i>src</i>)</h3>
<p>Reads a big-endian number from memory location <i>src</i> 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 <i>src</i>.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p><b>Note: </b>Since Qt 5.7, the type of the <i>src</i> parameter is a void pointer.</p><p>There are no data alignment constraints for <i>src</i>.</p>
<p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a>(), <a href="qtendian.html#qToBigEndian">qToBigEndian</a>(), and <a href="qtendian.html#qToLittleEndian">qToLittleEndian</a>().</p>
<!-- @@@qFromBigEndian -->
<!-- $$$qFromBigEndian$$$qFromBigEndianconstvoid*qsizetypevoid* -->
<h3 class="fn" id="qFromBigEndian-2"><a name="qFromBigEndian-2"></a><span class="type">void</span> <span class="name">qFromBigEndian</span>(const <span class="type">void</span> *<i>src</i>, <span class="type">qsizetype</span> <i>count</i>, <span class="type">void</span> *<i>dest</i>)</h3>
<p>Reads <i>count</i> big-endian numbers from memory location <i>src</i> and stores them in the host byte order representation at <i>dest</i>. On CPU architectures where the host byte order is little-endian (such as x86) this will swap the byte order; otherwise it will just perform a <code>memcpy</code> from <i>src</i> to <i>dest</i>.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p>There are no data alignment constraints for <i>src</i>. However, <i>dest</i> is expected to be naturally aligned for type <code>T</code>.</p>
<p>If <i>src</i> and <i>dest</i> can be the same pointer, this function will perform an in-place swap (if necessary). If they are not the same, the memory regions must not overlap.</p>
<p>This function was introduced in Qt 5.12.</p>
<p><b>See also </b><a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a>(), <a href="qtendian.html#qToBigEndian">qToBigEndian</a>(), and <a href="qtendian.html#qToLittleEndian">qToLittleEndian</a>().</p>
<!-- @@@qFromBigEndian -->
<!-- $$$qFromLittleEndian[overload1]$$$qFromLittleEndianT -->
<h3 class="fn" id="qFromLittleEndian"><a name="qFromLittleEndian"></a><span class="type">T</span> <span class="name">qFromLittleEndian</span>(<span class="type">T</span> <i>src</i>)</h3>
<p>This is an overloaded function.</p>
<p>Converts <i>src</i> 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 <i>src</i> with the byte order swapped; otherwise it will return <i>src</i> unmodified.</p>
<p>This function was introduced in Qt 4.3.</p>
<!-- @@@qFromLittleEndian -->
<!-- $$$qFromLittleEndian[overload1]$$$qFromLittleEndianconstvoid* -->
<h3 class="fn" id="qFromLittleEndian"><a name="qFromLittleEndian"></a><span class="type">T</span> <span class="name">qFromLittleEndian</span>(const <span class="type">void</span> *<i>src</i>)</h3>
<p>Reads a little-endian number from memory location <i>src</i> 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 <i>src</i>.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p><b>Note: </b>Since Qt 5.7, the type of the <i>src</i> parameter is a void pointer.</p><p>There are no data alignment constraints for <i>src</i>.</p>
<p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qtendian.html#qFromBigEndian">qFromBigEndian</a>(), <a href="qtendian.html#qToBigEndian">qToBigEndian</a>(), and <a href="qtendian.html#qToLittleEndian">qToLittleEndian</a>().</p>
<!-- @@@qFromLittleEndian -->
<!-- $$$qFromLittleEndian$$$qFromLittleEndianconstvoid*qsizetypevoid* -->
<h3 class="fn" id="qFromLittleEndian-2"><a name="qFromLittleEndian-2"></a><span class="type">void</span> <span class="name">qFromLittleEndian</span>(const <span class="type">void</span> *<i>src</i>, <span class="type">qsizetype</span> <i>count</i>, <span class="type">void</span> *<i>dest</i>)</h3>
<p>Reads <i>count</i> little-endian numbers from memory location <i>src</i> and stores them in the host byte order representation at <i>dest</i>. On CPU architectures where the host byte order is big-endian (such as PowerPC) this will swap the byte order; otherwise it will just perform a <code>memcpy</code> from <i>src</i> to <i>dest</i>.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p>There are no data alignment constraints for <i>src</i>. However, <i>dest</i> is expected to be naturally aligned for type <code>T</code>.</p>
<p>If <i>src</i> and <i>dest</i> can be the same pointer, this function will perform an in-place swap (if necessary). If they are not the same, the memory regions must not overlap.</p>
<p>This function was introduced in Qt 5.12.</p>
<p><b>See also </b><a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a>(), <a href="qtendian.html#qToBigEndian">qToBigEndian</a>(), and <a href="qtendian.html#qToLittleEndian">qToLittleEndian</a>().</p>
<!-- @@@qFromLittleEndian -->
<!-- $$$qToBigEndian[overload1]$$$qToBigEndianT -->
<h3 class="fn" id="qToBigEndian"><a name="qToBigEndian"></a><span class="type">T</span> <span class="name">qToBigEndian</span>(<span class="type">T</span> <i>src</i>)</h3>
<p>This is an overloaded function.</p>
<p>Converts <i>src</i> 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 <i>src</i> with the byte order swapped; otherwise it will return <i>src</i> unmodified.</p>
<p>This function was introduced in Qt 4.3.</p>
<!-- @@@qToBigEndian -->
<!-- $$$qToBigEndian[overload1]$$$qToBigEndianTvoid* -->
<h3 class="fn" id="qToBigEndian"><a name="qToBigEndian"></a><span class="type">void</span> <span class="name">qToBigEndian</span>(<span class="type">T</span> <i>src</i>, <span class="type">void</span> *<i>dest</i>)</h3>
<p>Writes the number <i>src</i> with template type <code>T</code> to the memory location at <i>dest</i> in big-endian byte order.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p>There are no data alignment constraints for <i>dest</i>.</p>
<p><b>Note: </b>Since Qt 5.7, the type of the <i>dest</i> parameter is a void pointer.</p><p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qtendian.html#qFromBigEndian">qFromBigEndian</a>(), <a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a>(), and <a href="qtendian.html#qToLittleEndian">qToLittleEndian</a>().</p>
<!-- @@@qToBigEndian -->
<!-- $$$qToBigEndian$$$qToBigEndianconstvoid*qsizetypevoid* -->
<h3 class="fn" id="qToBigEndian-2"><a name="qToBigEndian-2"></a><span class="type">void</span> <span class="name">qToBigEndian</span>(const <span class="type">void</span> *<i>src</i>, <span class="type">qsizetype</span> <i>count</i>, <span class="type">void</span> *<i>dest</i>)</h3>
<p>Reads <i>count</i> numbers from memory location <i>src</i> in the host byte order and stores them in big-endian representation at <i>dest</i>. On CPU architectures where the host byte order is little-endian (such as x86) this will swap the byte order; otherwise it will just perform a <code>memcpy</code> from <i>src</i> to <i>dest</i>.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p>There are no data alignment constraints for <i>dest</i>. However, <i>src</i> is expected to be naturally aligned for type <code>T</code>.</p>
<p>If <i>src</i> and <i>dest</i> can be the same pointer, this function will perform an in-place swap (if necessary). If they are not the same, the memory regions must not overlap.</p>
<p>This function was introduced in Qt 5.12.</p>
<p><b>See also </b><a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a>(), <a href="qtendian.html#qToBigEndian">qToBigEndian</a>(), and <a href="qtendian.html#qToLittleEndian">qToLittleEndian</a>().</p>
<!-- @@@qToBigEndian -->
<!-- $$$qToLittleEndian[overload1]$$$qToLittleEndianT -->
<h3 class="fn" id="qToLittleEndian"><a name="qToLittleEndian"></a><span class="type">T</span> <span class="name">qToLittleEndian</span>(<span class="type">T</span> <i>src</i>)</h3>
<p>This is an overloaded function.</p>
<p>Converts <i>src</i> 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 <i>src</i> with the byte order swapped; otherwise it will return <i>src</i> unmodified.</p>
<p>This function was introduced in Qt 4.3.</p>
<!-- @@@qToLittleEndian -->
<!-- $$$qToLittleEndian[overload1]$$$qToLittleEndianTvoid* -->
<h3 class="fn" id="qToLittleEndian"><a name="qToLittleEndian"></a><span class="type">void</span> <span class="name">qToLittleEndian</span>(<span class="type">T</span> <i>src</i>, <span class="type">void</span> *<i>dest</i>)</h3>
<p>Writes the number <i>src</i> with template type <code>T</code> to the memory location at <i>dest</i> in little-endian byte order.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p>There are no data alignment constraints for <i>dest</i>.</p>
<p><b>Note: </b>Since Qt 5.7, the type of the <i>dest</i> parameter is a void pointer.</p><p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qtendian.html#qFromBigEndian">qFromBigEndian</a>(), <a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a>(), and <a href="qtendian.html#qToBigEndian">qToBigEndian</a>().</p>
<!-- @@@qToLittleEndian -->
<!-- $$$qToLittleEndian$$$qToLittleEndianconstvoid*qsizetypevoid* -->
<h3 class="fn" id="qToLittleEndian-2"><a name="qToLittleEndian-2"></a><span class="type">void</span> <span class="name">qToLittleEndian</span>(const <span class="type">void</span> *<i>src</i>, <span class="type">qsizetype</span> <i>count</i>, <span class="type">void</span> *<i>dest</i>)</h3>
<p>Reads <i>count</i> numbers from memory location <i>src</i> in the host byte order and stores them in little-endian representation at <i>dest</i>. On CPU architectures where the host byte order is big-endian (such as PowerPC) this will swap the byte order; otherwise it will just perform a <code>memcpy</code> from <i>src</i> to <i>dest</i>.</p>
<p><b>Note: </b>Template type <code>T</code> can either be a quint16, qint16, quint32, qint32, quint64, or qint64. Other types of integers, e.g., qlong, are not applicable.</p><p>There are no data alignment constraints for <i>dest</i>. However, <i>src</i> is expected to be naturally aligned for type <code>T</code>.</p>
<p>If <i>src</i> and <i>dest</i> can be the same pointer, this function will perform an in-place swap (if necessary). If they are not the same, the memory regions must not overlap.</p>
<p>This function was introduced in Qt 5.12.</p>
<p><b>See also </b><a href="qtendian.html#qFromLittleEndian">qFromLittleEndian</a>(), <a href="qtendian.html#qToBigEndian">qToBigEndian</a>(), and <a href="qtendian.html#qToLittleEndian">qToLittleEndian</a>().</p>
<!-- @@@qToLittleEndian -->
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distrib
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Mageia
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7
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armv7hl
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media
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core-updates
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by-pkgid
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d5e62c01ae8d1e579463c6a871dd44bf
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files
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890
