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<h2>
<span class="refentrytitle">printks2</span>
</h2>
<p>printks2 —
Prints a new value every time a control variable changes using a
printf() style syntax.
</p>
</div>
<div class="refsect1">
<a id="idm281472901781912"></a>
<h2>Description</h2>
<p>
Prints a new value every time a control variable changes using a
printf() style syntax.
</p>
</div>
<div class="refsect1">
<a id="idm281472901738072"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>printks2</strong></span> "string", kval</pre>
</div>
<div class="refsect1">
<a id="idm281472901735992"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>"string"</em></span> -- the text string to be
used as a format.
</p>
</div>
<div class="refsect1">
<a id="idm281472901734248"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kval</em></span> -- signal to be printed. The style of
printing is specified in
<span class="emphasis"><em><span class="quote">“<span class="quote">string</span>”</span></em></span> with the standard C
value specifier (%f, %d, etc.).
</p>
</div>
<div class="refsect1">
<a id="idm281472901731752"></a>
<h2>Print Output Formatting</h2>
<p>
All standard C language printf() control characters may be used. For example, if <span class="emphasis"><em>kval1</em></span> = 153.26789 then some common formatting options are:
</p>
<div class="orderedlist">
<ol class="orderedlist" type="1">
<li class="listitem">
<p>%f prints with full precision: 153.26789</p>
</li>
<li class="listitem">
<p>%5.2f prints: 153.26</p>
</li>
<li class="listitem">
<p>%d prints integers-only: 153</p>
</li>
<li class="listitem">
<p>%c treats <span class="emphasis"><em>kval1</em></span> as an ascii character code. </p>
</li>
</ol>
</div>
<p>
</p>
<p>
In addition to all the printf() codes, printks2 supports these useful character codes:
</p>
<div class="informaltable">
<table class="informaltable" border="1">
<colgroup>
<col />
<col />
</colgroup>
<thead>
<tr>
<th>printks2 Code</th>
<th>Character Code</th>
</tr>
</thead>
<tbody>
<tr>
<td>\\r, \\R, %r, or %R</td>
<td>return character (\r)</td>
</tr>
<tr>
<td>\\n, \\N, %n, %N</td>
<td>newline character (\n)</td>
</tr>
<tr>
<td>\\t, \\T, %t, or %T</td>
<td>tab character (\t)</td>
</tr>
<tr>
<td>%!</td>
<td>semicolon character (;) This was needed because a <span class="quote">“<span class="quote">;</span>”</span> is interpreted as an comment.</td>
</tr>
<tr>
<td>^</td>
<td>escape character (0x1B)</td>
</tr>
<tr>
<td>^ ^</td>
<td>caret character (^)</td>
</tr>
<tr>
<td>˜</td>
<td>ESC[ (escape+[ is the escape sequence for ANSI
consoles)</td>
</tr>
<tr>
<td>˜˜</td>
<td>tilde (˜)</td>
</tr>
</tbody>
</table>
</div>
<p>
</p>
<p>
For more information about printf() formatting, consult any C
language documentation.
</p>
</div>
<div class="refsect1">
<a id="idm281472901710712"></a>
<h2>Examples</h2>
<p>
Here is an example of the printks2 opcode. It uses the file <a class="ulink" href="examples/printks2.csd" target="_top"><em class="citetitle">printks2.csd</em></a>.
</p>
<div class="example">
<a id="idm281472901708936"></a>
<p class="title">
<strong>Example 721. Example of the printks2 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="idm281472722569608"></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>
<span class="c1">; Audio out Audio in</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o printk.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="c1">; Initialize the global variables.</span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">kr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">1</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">; Instrument #1.</span>
<span class="kd">instr</span> <span class="nf">1</span>
<span class="c1">; Change a value linearly from 0 to 100,</span>
<span class="c1">; over the period defined by p3.</span>
k<span class="n">val</span> <span class="nb">line</span> <span class="mi">0</span><span class="p">,</span> <span class="nb">p3</span><span class="p">,</span> <span class="mi">100</span>
<span class="c1">; Print the value of kval when it changes.</span>
<span class="nb">printks2</span> <span class="s">"value now %f</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="nb">int</span><span class="p">(</span>k<span class="n">val</span><span class="p">)</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="c1">; Play Instrument #1 for 5 seconds.</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" />
</p>
</div>
<div class="refsect1">
<a id="idm281472901704712"></a>
<h2>See Also</h2>
<p>
<a class="link" href="printk2.html" title="printk2"><em class="citetitle">printk2</em></a> and
<a class="link" href="printks.html" title="printks"><em class="citetitle">printk2</em></a> and
<a class="link" href="printk.html" title="printk"><em class="citetitle">printk</em></a>
</p>
</div>
<div class="refsect1">
<a id="idm281472901700648"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: John ffitch</td>
</tr>
<tr>
<td>Bath, UK</td>
</tr>
<tr>
<td>Mar 2014</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 6.03</p>
</div>
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