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<h1 class="title">std/varints</h1>
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<summary><a class="reference reference-toplevel" href="#10" id="60">Consts</a></summary>
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<li><a class="reference" href="#maxVarIntLen" title="maxVarIntLen = 9">maxVarIntLen</a></li>
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<summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
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<ul class="simple nested-toc-section">decodeZigzag
<li><a class="reference" href="#decodeZigzag%2Cuint64" title="decodeZigzag(x: uint64): int64">decodeZigzag(x: uint64): int64</a></li>
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<ul class="simple nested-toc-section">encodeZigzag
<li><a class="reference" href="#encodeZigzag%2Cint64" title="encodeZigzag(x: int64): uint64">encodeZigzag(x: int64): uint64</a></li>
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<ul class="simple nested-toc-section">readVu64
<li><a class="reference" href="#readVu64%2CopenArray%5Bbyte%5D%2Cuint64" title="readVu64(z: openArray[byte]; pResult: var uint64): int">readVu64(z: openArray[byte]; pResult: var uint64): int</a></li>
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<li><a class="reference" href="#writeVu64%2CopenArray%5Bbyte%5D%2Cuint64" title="writeVu64(z: var openArray[byte]; x: uint64): int">writeVu64(z: var openArray[byte]; x: uint64): int</a></li>
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<a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/varints.nim#L1" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/varints.nim#L1" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
<div id="tocRoot"></div>
<p class="module-desc"><p>A variable length integer encoding implementation inspired by SQLite.</p>
<p>Unstable API.</p>
</p>
<div class="section" id="10">
<h1><a class="toc-backref" href="#10">Consts</a></h1>
<dl class="item">
<div id="maxVarIntLen">
<dt><pre><a href="varints.html#maxVarIntLen"><span class="Identifier">maxVarIntLen</span></a> <span class="Other">=</span> <span class="DecNumber">9</span></pre></dt>
<dd>
the maximal number of bytes a varint can take
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/varints.nim#L16" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/varints.nim#L16" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
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<div class="section" id="12">
<h1><a class="toc-backref" href="#12">Procs</a></h1>
<dl class="item">
<div id="decodeZigzag-procs-all">
<div id="decodeZigzag,uint64">
<dt><pre><span class="Keyword">proc</span> <a href="#decodeZigzag%2Cuint64"><span class="Identifier">decodeZigzag</span></a><span class="Other">(</span><span class="Identifier">x</span><span class="Other">:</span> <a href="system.html#uint64"><span class="Identifier">uint64</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int64"><span class="Identifier">int64</span></a> {.<span class="Identifier">inline</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/varints.nim#L114" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/varints.nim#L114" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
</dd>
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<div id="encodeZigzag-procs-all">
<div id="encodeZigzag,int64">
<dt><pre><span class="Keyword">proc</span> <a href="#encodeZigzag%2Cint64"><span class="Identifier">encodeZigzag</span></a><span class="Other">(</span><span class="Identifier">x</span><span class="Other">:</span> <a href="system.html#int64"><span class="Identifier">int64</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#uint64"><span class="Identifier">uint64</span></a> {.<span class="Identifier">inline</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/varints.nim#L110" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/varints.nim#L110" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
</dd>
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<div id="readVu64-procs-all">
<div id="readVu64,openArray[byte],uint64">
<dt><pre><span class="Keyword">proc</span> <a href="#readVu64%2CopenArray%5Bbyte%5D%2Cuint64"><span class="Identifier">readVu64</span></a><span class="Other">(</span><span class="Identifier">z</span><span class="Other">:</span> <a href="system.html#openArray"><span class="Identifier">openArray</span></a><span class="Other">[</span><a href="system.html#byte"><span class="Identifier">byte</span></a><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">pResult</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="system.html#uint64"><span class="Identifier">uint64</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
<span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/varints.nim#L18" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/varints.nim#L18" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
</dd>
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<div id="writeVu64-procs-all">
<div id="writeVu64,openArray[byte],uint64">
<dt><pre><span class="Keyword">proc</span> <a href="#writeVu64%2CopenArray%5Bbyte%5D%2Cuint64"><span class="Identifier">writeVu64</span></a><span class="Other">(</span><span class="Identifier">z</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="system.html#openArray"><span class="Identifier">openArray</span></a><span class="Other">[</span><a href="system.html#byte"><span class="Identifier">byte</span></a><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">x</span><span class="Other">:</span> <a href="system.html#uint64"><span class="Identifier">uint64</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
<span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
<dd>
Write a varint into z. The buffer z must be at least 9 characters long to accommodate the largest possible varint. Returns the number of bytes used.
<a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/varints.nim#L57" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/varints.nim#L57" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
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