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<h2>
<span class="refentrytitle">tablecopy</span>
</h2>
<p>tablecopy —
Simple, fast table copy opcode.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp47266248"></a>
<h2>Description</h2>
<p>
Simple, fast table copy opcode.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp47266888"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>tablecopy</strong></span> kdft, ksft</pre>
</div>
<div class="refsect1" title="Performance">
<a id="idp47277416"></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" title="Examples">
<a id="idp47281936"></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="idp47282928"></a>
<p class="title">
<strong>Example 848. 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>
<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 tablecopy.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="comment">;after an example from Jonathan Murphy </span>
gilen <span class="op">=</span> 7
gilist <span class="ohdr">ftgen</span> 1, 0, gilen <span class="op">+</span> 1, <span class="op">-</span>2, 2, 3, 4, 5, 6, 7 <span class="comment">;only 6 elements, so 1 is doubled</span>
gitmp <span class="ohdr">ftgen</span> 2, 0, gilen <span class="op">+</span> 1, <span class="op">-</span>2, 0 <span class="comment">;empty table</span>
gkmax <span class="opc">init</span> gilen
<span class="ohdr">seed</span> 0 <span class="comment">;each time different </span>
<span class="oblock">instr</span> 1
ktrig <span class="opc">metro</span> 3 <span class="comment">;trigger values</span>
krnd <span class="opc">random</span> 0, gkmax
<span class="octrl">if</span> (ktrig <span class="op">==</span> 1) then
kval <span class="opc">table</span> krnd, gilist
<span class="opc">tablew</span> 0, krnd, gilist
kread <span class="op">=</span> 0
kwrite <span class="op">=</span> 0
<span class="olabel">start</span><span class="op">:</span>
knew <span class="opc">table</span> kread, gilist
<span class="octrl">if</span> (knew <span class="op">!=</span> 0) then
<span class="opc">tablew</span> knew, kwrite, gitmp
kwrite <span class="op">=</span> kwrite <span class="op">+</span> 1
<span class="octrl">endif</span>
kread <span class="op">=</span> kread <span class="op">+</span> 1
<span class="octrl">if</span> (kread <span class="op"><=</span> gilen) <span class="octrl">kgoto</span> <span class="olabel">start</span>
<span class="opc">tablecopy</span> gilist, gitmp <span class="comment">;fill with zeroes</span>
gkmax <span class="op">=</span> gkmax <span class="op">-</span> 1
<span class="octrl">endif</span>
<span class="opc">printk2</span> kval
<span class="octrl">if</span> (gkmax <span class="op"><</span> 0) then
<span class="opc">event</span> "i", 2, 0, 1<span class="op">/</span><span class="ohdr">kr</span> <span class="comment">;when ready, then stop</span>
<span class="octrl">endif</span>
asig <span class="opc">vco2</span> .5, 40<span class="op">*</span>kval <span class="comment">;sound generation</span>
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="oblock">instr</span> 2
<span class="opc">exitnow</span>
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span>1 0 5
<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 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" title="See Also">
<a id="idp47319264"></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" title="Credits">
<a id="idp47322224"></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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Mageia
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media
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