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<p class='location'><a href='../index.html'>ryu</a>::<wbr><a href='index.html'>raw</a></p><script>window.sidebarCurrent = {name: 'd2s_buffered_n', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Function <a href='../index.html'>ryu</a>::<wbr><a href='index.html'>raw</a>::<wbr><a class="fn" href=''>d2s_buffered_n</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../src/ryu/d2s.rs.html#535-553' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub unsafe fn d2s_buffered_n(f: f64, result: *mut u8) -> usize</pre><div class='docblock'><p>Print f64 to the given buffer and return number of bytes written.</p>
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<p>At most 24 bytes will be written.</p>
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<h2 id="special-cases" class="section-header"><a href="#special-cases">Special cases</a></h2>
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<p>This function represents any NaN as <code>NaN</code>, positive infinity as <code>Infinity</code>,
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and negative infinity as <code>-Infinity</code>.</p>
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<h2 id="safety" class="section-header"><a href="#safety">Safety</a></h2>
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<p>The <code>result</code> pointer argument must point to sufficiently many writable bytes
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to hold Ryū's representation of <code>f</code>.</p>
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<h2 id="example" class="section-header"><a href="#example">Example</a></h2>
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<pre class="rust rust-example-rendered">
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<span class="kw">let</span> <span class="ident">f</span> <span class="op">=</span> <span class="number">1.234f64</span>;
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<span class="kw">unsafe</span> {
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buffer</span>: [<span class="ident">u8</span>; <span class="number">24</span>] <span class="op">=</span> <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">uninitialized</span>();
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<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">ryu</span>::<span class="ident">raw</span>::<span class="ident">d2s_buffered_n</span>(<span class="ident">f</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buffer</span>[<span class="number">0</span>]);
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<span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">std</span>::<span class="ident">str</span>::<span class="ident">from_utf8_unchecked</span>(<span class="kw-2">&</span><span class="ident">buffer</span>[..<span class="ident">n</span>]);
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">s</span>, <span class="string">"1.234E0"</span>);
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}</pre>
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