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<h1>Directive #undef</h1>
<hr />
<dl class='group--doc'>
<dt class='head--type'><span class='homogen--type'>Directive</span>
<span class='homogen--name'><b>#undef</b></span>
</dt>
<dd><p><code class='directive'>#undef</code></p></dd>
<dt class='head--doc'>Description</dt>
<dd class='body--doc'>
<p>This removes the effect of a #define, all subsequent occurances of
the undefined identifier will not be replaced by anything. Note that
when undefining a macro, you just give the identifer, not the
arguments.</p>
</dd>
<dt class='head--doc'>Example</dt>
<dd class='example'><pre>
<tt><p>#define foo bar<br />
#undef foo<br />
#define foo(bar) gazonk bar<br />
#undef foo<br />
<br />
</p>
</tt></pre></dd></dl>
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