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<h2>
<span class="refentrytitle">random</span>
</h2>
<p>random —
Generates a controlled pseudo-random number series between min and max values.
</p>
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<div class="refsect1" title="Description">
<a id="id3151542"></a>
<h2>Description</h2>
<p>
Generates is a controlled pseudo-random number series between min and max values.
</p>
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<div class="refsect1" title="Syntax">
<a id="id3151555"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>random</strong></span> kmin, kmax</pre>
<pre class="synopsis">ires <span class="command"><strong>random</strong></span> imin, imax</pre>
<pre class="synopsis">kres <span class="command"><strong>random</strong></span> kmin, kmax</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="id3151796"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>imin</em></span> -- minimum range limit
</p>
<p>
<span class="emphasis"><em>imax</em></span> -- maximum range limit
</p>
</div>
<div class="refsect1" title="Performance">
<a id="id3151818"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kmin</em></span> -- minimum range limit
</p>
<p>
<span class="emphasis"><em>kmax</em></span> -- maximum range limit
</p>
<p>
The <span class="emphasis"><em>random</em></span> opcode is similar to <a class="link" href="linrand.html" title="linrand"><em class="citetitle">linrand</em></a> and <a class="link" href="trirand.html" title="trirand"><em class="citetitle">trirand</em></a> but sometimes I [Gabriel Maldonado] find it more convenient because allows the user to set arbitrary minimum and maximum values.
</p>
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<div class="refsect1" title="Examples">
<a id="id3152448"></a>
<h2>Examples</h2>
<p>
Here is an example of the random opcode. It uses the file <a class="ulink" href="examples/random.csd" target="_top"><em class="citetitle">random.csd</em></a>.
</p>
<div class="example">
<a id="id3152464"></a>
<p class="title">
<b>Example 514. Example of the random opcode.</b>
</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>
<span class="comment">; Audio out Audio in</span>
-odac -iadc <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o random.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; Initialize the global variables.</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="comment">; Instrument #1.</span>
<span class="oblock">instr</span> 1
<span class="comment">; Generate a random number between 220 and 440.</span>
kmin <span class="opc">init</span> 220
kmax <span class="opc">init</span> 440
k1 <span class="opc">random</span> kmin, kmax
<span class="opc">printks</span> "k1 <span class="op">=</span> <span class="op">%</span>f\\n", 0.1, k1
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Play Instrument #1 for one second.</span>
<span class="stamnt">i</span> 1 0 1
<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 lines like:
</p>
<pre class="screen">
k1 = 414.232056
k1 = 419.393402
k1 = 275.376373
</pre>
<p>
</p>
</div>
<div class="refsect1" title="See Also">
<a id="id3152510"></a>
<h2>See Also</h2>
<p>
<a class="link" href="linrand.html" title="linrand"><em class="citetitle">linrand</em></a>,
<a class="link" href="randomh.html" title="randomh"><em class="citetitle">randomh</em></a>,
<a class="link" href="randomi.html" title="randomi"><em class="citetitle">randomi</em></a>,
<a class="link" href="trirand.html" title="trirand"><em class="citetitle">trirand</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="id3152552"></a>
<h2>Credits</h2>
<p>Author: Gabriel Maldonado</p>
<p>Example written by Kevin Conder.</p>
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