<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>r Statement (Repeat Statement)</title>
<link rel="stylesheet" type="text/css" href="csound.css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.76.1" />
<link rel="home" href="index.html" title="The Canonical Csound Reference Manual" />
<link rel="up" href="ScoregensTop.html" title="Score Statements and GEN Routines" />
<link rel="prev" href="q.html" title="q Statement" />
<link rel="next" href="s.html" title="s Statement" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">r Statement (Repeat Statement)</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="q.html">Prev</a> </td>
<th width="60%" align="center">Score Statements and GEN Routines</th>
<td width="20%" align="right"> <a accesskey="n" href="s.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry" title="r Statement (Repeat Statement)">
<a id="r"></a>
<div class="titlepage"></div>
<a id="IndexRStatement" class="indexterm"></a>
<a id="IndexRepeatStatement" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">r Statement (Repeat Statement)</span>
</h2>
<p>r —
Starts a repeated section.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp76778448"></a>
<h2>Description</h2>
<p>
Starts a repeated section, which lasts until the next <span class="emphasis"><em>s</em></span>, <span class="emphasis"><em>r</em></span> or <span class="emphasis"><em>e statement</em></span>.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp76797968"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>r</strong></span> p1 p2</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp76798976"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>p1</em></span> -- Number of times to repeat the section.
</p>
<p>
<span class="emphasis"><em>p2</em></span> -- Macro(name) to advance with each repetition (optional).
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp76800424"></a>
<h2>Performance</h2>
<p>
In order that the sections may be more flexible than simple editing, the macro named p2 is given the value of 1 for the first time through the section, 2 for the second, and 3 for the third. This can be used to change p-field parameters, or ignored.
</p>
<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Warning: Warning">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Warning]" src="images/warning.png" />
</td>
<th align="left">Warning</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
Because of serious problems of interaction with macro expansion, sections must start and end in the same file, and not in a macro.
</p>
</td>
</tr>
</table>
</div>
</div>
<div class="refsect1" title="Examples">
<a id="idp76819976"></a>
<h2>Examples</h2>
<p>
Here is an example of the r statement. It uses the file <a class="ulink" href="examples/r.csd" target="_top"><em class="citetitle">r.csd</em></a>.
</p>
<div class="example">
<a id="idp76820952"></a>
<p class="title">
<strong>Example 1029. Example of the r statement.</strong>
</p>
<div class="example-contents">
<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 r.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">; The score's p4 parameter has the number of repeats.</span>
kreps <span class="op">=</span> p4
<span class="comment">; The score's p5 parameter has our note's frequency.</span>
kcps <span class="op">=</span> p5
<span class="comment">; Print the number of repeats.</span>
<span class="opc">printks</span> "Repeated <span class="op">%</span><span class="opc">i</span> time(s).\\n", 1, kreps
<span class="comment">; Generate a nice beep.</span>
a1 <span class="opc">oscil</span> 20000, kcps, 1
<span class="opc">out</span> a1
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Table #1, a sine wave.</span>
<span class="stamnt">f</span> 1 0 16384 10 1
<span class="comment">; We'll repeat this section 6 times. Each time it </span>
<span class="comment">; is repeated, its macro REPS_MACRO is incremented. </span>
<span class="stamnt">r</span>6 REPS_MACRO
<span class="comment">; Play Instrument #1.</span>
<span class="comment">; p4 = the r statement's macro, REPS_MACRO.</span>
<span class="comment">; p5 = the frequency in cycles per second.</span>
<span class="stamnt">i</span> 1 00.10 00.10 $REPS_MACRO 1760
<span class="stamnt">i</span> 1 00.30 00.10 $REPS_MACRO 880
<span class="stamnt">i</span> 1 00.50 00.10 $REPS_MACRO 440
<span class="stamnt">i</span> 1 00.70 00.10 $REPS_MACRO 220
<span class="comment">; Marks the end of the section.</span>
<span class="stamnt">s</span>
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp76821936"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: John ffitch</td>
</tr>
<tr>
<td>University of Bath/Codemist Ltd.</td>
</tr>
<tr>
<td>Bath, UK</td>
</tr>
<tr>
<td>April, 1998</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.48</p>
<p>Example written by Kevin Conder</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="q.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="ScoregensTop.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="s.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">q Statement </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> s Statement</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
5
>
x86_64
>
media
>
core-release
>
by-pkgid
>
b707d9a4ee443103660a75ccb6e51334
>
files
>
2492
