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<!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=ANSI_X3.4-1968" /><title>snd_pcm_hw_constraint_integer</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="The ALSA Driver API" /><link rel="up" href="ch02.html#idm140249671025216" title="PCM Core" /><link rel="prev" href="API-snd-pcm-hw-rule-add.html" title="snd_pcm_hw_rule_add" /><link rel="next" href="API-snd-pcm-hw-constraint-minmax.html" title="snd_pcm_hw_constraint_minmax" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">snd_pcm_hw_constraint_integer</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-snd-pcm-hw-rule-add.html">Prev</a>&#160;</td><th width="60%" align="center">PCM Core</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-snd-pcm-hw-constraint-minmax.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="API-snd-pcm-hw-constraint-integer"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>snd_pcm_hw_constraint_integer &#8212; 
     apply an integer constraint to an interval
 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <strong class="fsfunc">snd_pcm_hw_constraint_integer </strong>(</code></td><td>struct snd_pcm_runtime * <var class="pdparam">runtime</var>, </td></tr><tr><td>&#160;</td><td>snd_pcm_hw_param_t <var class="pdparam">var</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a id="idm140249670812672"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>runtime</code></em></span></dt><dd><p>
     PCM runtime instance
    </p></dd><dt><span class="term"><em class="parameter"><code>var</code></em></span></dt><dd><p>
     hw_params variable to apply the integer constraint
    </p></dd></dl></div></div><div class="refsect1"><a id="idm140249670807632"></a><h2>Description</h2><p>
   Apply the constraint of integer to an interval parameter.
</p></div><div class="refsect1"><a id="idm140249670806400"></a><h2>Return</h2><p>
   Positive if the value is changed, zero if it's not changed, or a
   negative error code.
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