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<h2>
<span class="refentrytitle">tablecopy</span>
</h2>
<p>tablecopy —
Simple, fast table copy opcode.
</p>
</div>
<div class="refsect1">
<a id="idm281472881878664"></a>
<h2>Description</h2>
<p>
Simple, fast table copy opcode.
</p>
</div>
<div class="refsect1">
<a id="idm281472881875032"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>tablecopy</strong></span> kdft, ksft</pre>
</div>
<div class="refsect1">
<a id="idm281472881872984"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kdft</em></span> -- Destination function table.
</p>
<p>
<span class="emphasis"><em>ksft</em></span> -- Number of source function table.
</p>
<p>
<span class="emphasis"><em>tablecopy</em></span> -- Simple, fast table copy opcode. Takes the table length from the destination table, and reads from the start of the source table. For speed reasons, does not check the source length - just copies regardless - in <span class="quote">“<span class="quote">wrap</span>”</span> mode. This may read through the source table several times. A source table with length 1 will cause all values in the destination table to be written to its value.
</p>
<p>
<span class="emphasis"><em>tablecopy</em></span> cannot read or write the guardpoint. To read it use <a class="link" href="table.html" title="table"><em class="citetitle">table</em></a>, with <span class="emphasis"><em>ndx</em></span> = the table length. Likewise use table write to write it.
</p>
<p>
To write the guardpoint to the value in location 0, use <a class="link" href="tablegpw.html" title="tablegpw"><em class="citetitle">tablegpw</em></a>.
</p>
<p>
This is primarily to change function tables quickly in a real-time situation.
</p>
</div>
<div class="refsect1">
<a id="idm281472881794888"></a>
<h2>Examples</h2>
<p>
Here is an example of the tablecopy opcode. It uses the file <a class="ulink" href="examples/tablecopy.csd" target="_top"><em class="citetitle">tablecopy.csd</em></a>.
</p>
<div class="example">
<a id="idm281472881793032"></a>
<p class="title">
<strong>Example 975. Example of the tablecopy 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>
<div class="refsect1">
<a id="idm281472703140408"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o tablecopy.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">;after an example from Jonathan Murphy </span>
gi<span class="n">len</span> <span class="o">=</span> <span class="mi">7</span>
gi<span class="n">list</span> <span class="nb">ftgen</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> gi<span class="n">len</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="o">-</span><span class="mi">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">6</span><span class="p">,</span> <span class="mi">7</span> <span class="c1">;only 6 elements, so 1 is doubled</span>
gi<span class="n">tmp</span> <span class="nb">ftgen</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> gi<span class="n">len</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="o">-</span><span class="mi">2</span><span class="p">,</span> <span class="mi">0</span> <span class="c1">;empty table</span>
gk<span class="n">max</span> <span class="nb">init</span> gi<span class="n">len</span>
<span class="nb">seed</span> <span class="mi">0</span> <span class="c1">;each time different </span>
<span class="kd">instr</span> <span class="nf">1</span>
k<span class="n">trig</span> <span class="nb">metro</span> <span class="mi">3</span> <span class="c1">;trigger values</span>
k<span class="n">rnd</span> <span class="nb">random</span> <span class="mi">0</span><span class="p">,</span> gk<span class="n">max</span>
<span class="k">if</span> <span class="p">(</span>k<span class="n">trig</span> <span class="o">==</span> <span class="mi">1</span><span class="p">)</span> <span class="k">then</span>
k<span class="n">val</span> <span class="nb">table</span> k<span class="n">rnd</span><span class="p">,</span> gi<span class="n">list</span>
<span class="nb">tablew</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">rnd</span><span class="p">,</span> gi<span class="n">list</span>
k<span class="n">read</span> <span class="o">=</span> <span class="mi">0</span>
k<span class="n">write</span> <span class="o">=</span> <span class="mi">0</span>
<span class="nl">start</span><span class="p">:</span>
k<span class="n">new</span> <span class="nb">table</span> k<span class="n">read</span><span class="p">,</span> gi<span class="n">list</span>
<span class="k">if</span> <span class="p">(</span>k<span class="n">new</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">tablew</span> k<span class="n">new</span><span class="p">,</span> k<span class="n">write</span><span class="p">,</span> gi<span class="n">tmp</span>
k<span class="n">write</span> <span class="o">=</span> k<span class="n">write</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">endif</span>
k<span class="n">read</span> <span class="o">=</span> k<span class="n">read</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">if</span> <span class="p">(</span>k<span class="n">read</span> <span class="o"><=</span> gi<span class="n">len</span><span class="p">)</span> <span class="k">kgoto</span> <span class="nl">start</span>
<span class="nb">tablecopy</span> gi<span class="n">list</span><span class="p">,</span> gi<span class="n">tmp</span> <span class="c1">;fill with zeroes</span>
gk<span class="n">max</span> <span class="o">=</span> gk<span class="n">max</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">endif</span>
<span class="nb">printk2</span> k<span class="n">val</span>
<span class="k">if</span> <span class="p">(</span>gk<span class="n">max</span> <span class="o"><</span> <span class="mi">0</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">event</span> <span class="s">"i"</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="o">/</span><span class="vg">kr</span> <span class="c1">;when ready, then stop</span>
<span class="k">endif</span>
a<span class="n">sig</span> <span class="nb">vco2</span> <span class="mf">.5</span><span class="p">,</span> <span class="mi">40</span><span class="o">*</span>k<span class="n">val</span> <span class="c1">;sound generation</span>
<span class="nb">outs</span> a<span class="n">sig</span><span class="p">,</span> a<span class="n">sig</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">2</span>
<span class="nb">exitnow</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">5</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
Its output should include a lines like these:
</p>
<pre class="screen">
i1 5.00000
i1 3.00000
i1 2.00000
i1 4.00000
i1 7.00000
i1 6.00000
i1 7.00000</pre>
<p>
</p>
</div>
<div class="refsect1">
<a id="idm281472881788024"></a>
<h2>See Also</h2>
<p>
<a class="link" href="tablegpw.html" title="tablegpw"><em class="citetitle">tablegpw</em></a>,
<a class="link" href="tablemix.html" title="tablemix"><em class="citetitle">tablemix</em></a>,
<a class="link" href="tableicopy.html" title="tableicopy"><em class="citetitle">tableicopy</em></a>,
<a class="link" href="tableigpw.html" title="tableigpw"><em class="citetitle">tableigpw</em></a>,
<a class="link" href="tableimix.html" title="tableimix"><em class="citetitle">tableimix</em></a>
</p>
</div>
<div class="refsect1">
<a id="idm281472881782104"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Robin Whittle</td>
</tr>
<tr>
<td>Australia</td>
</tr>
<tr>
<td>May 1997</td>
</tr>
</table>
<p>
</p>
<p>New in version 3.47</p>
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