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<p>pop_f —
Pops an f-sig frame from the global stack.
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
Pops an f-sig frame from the global stack.
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis">fsig <span class="command"><strong>pop_f</strong></span></pre>
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<div class="refsect1" title="Performance">
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<h2>Performance</h2>
<p>
<span class="emphasis"><em>fsig </em></span> - f-signal to be popped from the stack.
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<p>
The values are popped the stack. The global stack must be initialized before used, and its size must be set. The global stack works in LIFO order: after multiple <a class="link" href="push_f.html" title="push_f"><em class="citetitle">push_f</em></a> calls, <span class="emphasis"><em>pop_f</em></span> should be used in reverse order.
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<p>
push/pop for a, k, i, and S types copy data by value. By contrast, <a class="link" href="push_f.html" title="push_f"><em class="citetitle">push_f</em></a> only pushes a "reference" to the f-signal, and then the corresponding <span class="emphasis"><em>pop_f</em></span> will copy directly from the original variable to its output signal. For this reason, changing the source f-signal of <a class="link" href="push_f.html" title="push_f"><em class="citetitle">push_f</em></a> before <span class="emphasis"><em>pop_f</em></span> is called is not recommended, and if the instrument instance owning the variable that was passed by <a class="link" href="push_f.html" title="push_f"><em class="citetitle">push_f</em></a> is deactivated before <span class="emphasis"><em>pop_f</em></span> is called, undefined behavior may occur.
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<p>
<a class="link" href="push_f.html" title="push_f"><em class="citetitle">push_f</em></a> and <span class="emphasis"><em>pop_f</em></span> can only take a single argument, and the data is passed both at init and performance time.
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<p>
Any stack errors (trying to push when there is no more space, or pop from an empty stack, inconsistent number or type of arguments, etc.) are fatal and terminate performance.
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<div class="refsect1" title="See also">
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<h2>See also</h2>
<p>
<a class="link" href="stack.html" title="stack"><em class="citetitle">stack</em></a>,
<a class="link" href="push.html" title="push"><em class="citetitle">push</em></a>,
<a class="link" href="pop.html" title="pop"><em class="citetitle">pop</em></a> and
<a class="link" href="push_f.html" title="push_f"><em class="citetitle">push_f</em></a>.
</p>
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<div class="refsect1" title="Credits">
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<h2>Credits</h2>
<p>By: Istvan Varga.</p>
<p>2006</p>
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