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<article class="content wrap" id="_content" data-uid="X10D.Numerics.Int64Extensions">
<h1 id="X10D_Numerics_Int64Extensions" data-uid="X10D.Numerics.Int64Extensions" class="text-break">Class Int64Extensions
</h1>
<div class="markdown level0 summary"><p>Numeric-related extension methods for <see cref="!:System.Int64"></see>.</p>
</div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><span class="xref">System.Object</span></div>
<div class="level1"><span class="xref">Int64Extensions</span></div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="X10D.Numerics.html">X10D.Numerics</a></h6>
<h6><strong>Assembly</strong>: X10D.dll</h6>
<h5 id="X10D_Numerics_Int64Extensions_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static class Int64Extensions : object</code></pre>
</div>
<h3 id="methods">Methods
</h3>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/oliverbooth/X10D/new/main/apiSpec/new?filename=X10D_Numerics_Int64Extensions_PopCount_System_Int64_.md&amp;value=---%0Auid%3A%20X10D.Numerics.Int64Extensions.PopCount(System.Int64)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
</span>
<span class="small pull-right mobile-hide">
<a href="https://github.com/oliverbooth/X10D/blob/main/X10D/src/Numerics/Int64Extensions.cs/#L21">View Source</a>
</span>
<a id="X10D_Numerics_Int64Extensions_PopCount_" data-uid="X10D.Numerics.Int64Extensions.PopCount*"></a>
<h4 id="X10D_Numerics_Int64Extensions_PopCount_System_Int64_" data-uid="X10D.Numerics.Int64Extensions.PopCount(System.Int64)">PopCount(Int64)</h4>
<div class="markdown level1 summary"><p>Returns the population count (number of bits set) of a mask.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static int PopCount(this long value)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><span class="parametername">value</span></td>
<td><p>The mask.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><p>The population count of <code data-dev-comment-type="paramref" class="paramref">value</code>.</p>
</td>
</tr>
</tbody>
</table>
<h5 id="X10D_Numerics_Int64Extensions_PopCount_System_Int64__remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>This method is similar in behavior to the x86 instruction
<a href="https://docs.microsoft.com/en-us/dotnet/api/system.runtime.intrinsics.x86.popcnt?view=net-6.0">POPCNT</a></p>
</div>
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<span class="divider">|</span>
<a href="https://github.com/oliverbooth/X10D/new/main/apiSpec/new?filename=X10D_Numerics_Int64Extensions_RotateLeft_System_Int64_System_Int32_.md&amp;value=---%0Auid%3A%20X10D.Numerics.Int64Extensions.RotateLeft(System.Int64%2CSystem.Int32)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a href="https://github.com/oliverbooth/X10D/blob/main/X10D/src/Numerics/Int64Extensions.cs/#L36">View Source</a>
</span>
<a id="X10D_Numerics_Int64Extensions_RotateLeft_" data-uid="X10D.Numerics.Int64Extensions.RotateLeft*"></a>
<h4 id="X10D_Numerics_Int64Extensions_RotateLeft_System_Int64_System_Int32_" data-uid="X10D.Numerics.Int64Extensions.RotateLeft(System.Int64,System.Int32)">RotateLeft(Int64, Int32)</h4>
<div class="markdown level1 summary"><p>Rotates the current value left by the specified number of bits.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static long RotateLeft(this long value, int count)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><span class="parametername">value</span></td>
<td><p>The value to rotate.</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">count</span></td>
<td><p>The number of bits by which to rotate. Any value outside the range [0..63] is treated as congruent mod 64.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><p>The rotated value.</p>
</td>
</tr>
</tbody>
</table>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/oliverbooth/X10D/new/main/apiSpec/new?filename=X10D_Numerics_Int64Extensions_RotateRight_System_Int64_System_Int32_.md&amp;value=---%0Auid%3A%20X10D.Numerics.Int64Extensions.RotateRight(System.Int64%2CSystem.Int32)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a id="X10D_Numerics_Int64Extensions_RotateRight_" data-uid="X10D.Numerics.Int64Extensions.RotateRight*"></a>
<h4 id="X10D_Numerics_Int64Extensions_RotateRight_System_Int64_System_Int32_" data-uid="X10D.Numerics.Int64Extensions.RotateRight(System.Int64,System.Int32)">RotateRight(Int64, Int32)</h4>
<div class="markdown level1 summary"><p>Rotates the current value right by the specified number of bits.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static long RotateRight(this long value, int count)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><span class="parametername">value</span></td>
<td><p>The value to rotate.</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">count</span></td>
<td><p>The number of bits by which to rotate. Any value outside the range [0..63] is treated as congruent mod 64.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><p>The rotated value.</p>
</td>
</tr>
</tbody>
</table>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/oliverbooth/X10D/new/main/apiSpec/new?filename=X10D_Numerics_Int64Extensions_RoundUpToPowerOf2_System_Int64_.md&amp;value=---%0Auid%3A%20X10D.Numerics.Int64Extensions.RoundUpToPowerOf2(System.Int64)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a id="X10D_Numerics_Int64Extensions_RoundUpToPowerOf2_" data-uid="X10D.Numerics.Int64Extensions.RoundUpToPowerOf2*"></a>
<h4 id="X10D_Numerics_Int64Extensions_RoundUpToPowerOf2_System_Int64_" data-uid="X10D.Numerics.Int64Extensions.RoundUpToPowerOf2(System.Int64)">RoundUpToPowerOf2(Int64)</h4>
<div class="markdown level1 summary"><p>Rounds the current value up to a power of two.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public static long RoundUpToPowerOf2(this long value)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><span class="parametername">value</span></td>
<td><p>The value to round.</p>
</td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int64</span></td>
<td><p>The smallest power of two that's greater than or equal to <code data-dev-comment-type="paramref" class="paramref">value</code>, or 0 if <code data-dev-comment-type="paramref" class="paramref">value</code>
is 0 or the result overflows.</p>
</td>
</tr>
</tbody>
</table>
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