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<div class="refentry" title="round">
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<h2>
<span class="refentrytitle">round</span>
</h2>
<p>round —
Returns the integer value nearest to <span class="emphasis"><em>x</em></span>
; if the fractional part of <span class="emphasis"><em>x</em></span> is exactly 0.5, the direction of rounding
is undefined.
</p>
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<div class="refsect1" title="Description">
<a id="idp41107816"></a>
<h2>Description</h2>
<p>
The integer value nearest to
<span class="emphasis"><em>x</em></span>
; if the fractional part of <span class="emphasis"><em>x</em></span> is exactly 0.5, the direction of rounding
is undefined.
</p>
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<div class="refsect1" title="Syntax">
<a id="idp41108928"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>round</strong></span>(x) (init-, control-, or audio-rate arg allowed)</pre>
<p>
where the argument within the parentheses may be an expression.
Value converters perform arithmetic translation from units of
one kind to units of another. The result can then be a term in a
further expression.
</p>
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<div class="refsect1" title="Examples">
<a id="idp41110440"></a>
<h2>Examples</h2>
<p>
Here is an example of the round opcode. It uses the file <a class="ulink" href="examples/round.csd" target="_top"><em class="citetitle">round.csd</em></a>.
</p>
<div class="example">
<a id="idp41111408"></a>
<p class="title">
<strong>Example 732. Example of the round opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">;-o round.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
<span class="oblock">instr</span> 1
idiv <span class="opc">init</span> 1
<span class="olabel">loop</span><span class="op">:</span>
inumber <span class="op">=</span> 9
i1 <span class="op">=</span> inumber <span class="op">/</span> idiv
iro <span class="op">=</span> <span class="opc">round</span>(i1)
<span class="opc">print</span> inumber, idiv, iro <span class="comment">;print number / idiv = result using round</span>
idiv <span class="op">=</span> idiv <span class="op">+</span> 1
<span class="octrl">if</span> (idiv <span class="op"><=</span> 10) <span class="octrl">igoto</span> <span class="olabel">loop</span>
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span> 1 0 0
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
Its output should include a line like these:
</p>
<pre class="screen">
instr 1: inumber = 9.000 idiv = 1.000 ifl = 9.000
instr 1: inumber = 9.000 idiv = 2.000 ifl = 5.000
instr 1: inumber = 9.000 idiv = 3.000 ifl = 3.000
instr 1: inumber = 9.000 idiv = 4.000 ifl = 2.000
instr 1: inumber = 9.000 idiv = 5.000 ifl = 2.000
instr 1: inumber = 9.000 idiv = 6.000 ifl = 2.000
instr 1: inumber = 9.000 idiv = 7.000 ifl = 1.000
instr 1: inumber = 9.000 idiv = 8.000 ifl = 1.000
instr 1: inumber = 9.000 idiv = 9.000 ifl = 1.000
instr 1: inumber = 9.000 idiv = 10.000 ifl = 1.000
</pre>
<p>
</p>
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<div class="refsect1" title="See Also">
<a id="idp41114600"></a>
<h2>See Also</h2>
<p>
<a class="link" href="abs.html" title="abs"><em class="citetitle">abs</em></a>,
<a class="link" href="exp.html" title="exp"><em class="citetitle">exp</em></a>,
<a class="link" href="int.html" title="int"><em class="citetitle">int</em></a>,
<a class="link" href="log.html" title="log"><em class="citetitle">log</em></a>,
<a class="link" href="log10.html" title="log10"><em class="citetitle">log10</em></a>,
<a class="link" href="opi.html" title="i"><em class="citetitle">i</em></a>,
<a class="link" href="sqrt.html" title="sqrt"><em class="citetitle">sqrt</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp41118360"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Istvan Varga</td>
</tr>
<tr>
<td>New in Csound 5</td>
</tr>
<tr>
<td>2005</td>
</tr>
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