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<h1>22. Virtuoso Functions Guide - bit_shift</h1>
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<div id="text">
<h2>bit_shift</h2>
<div class="refpurpose">Returns the result of bitwise shift operation over two 32-bit integers.</div>
<div class="funcsynopsis">
<span class="funcdef">
<span class="function">bit_shift</span>
</span>
(<span class="paramdef">in <span class="parameter">value</span> integer</span>,
<span class="paramdef">in <span class="parameter">distance</span> integer</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>The function returns bitwise shift of two given integers.
Depending on the arguments, the shift may be left or right.
For right-shift, leftmost bits of the result are filled by the value
of the 31-st bit.
</p>
<p>On 64-bit platforms, both arguments are intentionally truncated to 32 bits
and the shift is restricted to 32 bits to maintain compatibility.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">value – </span>
The value to be shifted.
</div>
<div class="refsect2">
<span class="refsect2title">distance – </span>
The sign of the parameter specifies the direction of the shift:
positive values indicate shift to the left, negative values indicate
shift to the right. The absolute value of the parameter specifies
the number of bits to shift. The value of zero means that the
result is equal to the value of the first argument.
</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>Integer.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Examples</div>
<a name="ex_bit_shift" />
<div class="example">
<div class="exampletitle">Bitwise-shifting</div>
<p />
<div>
<pre class="screen">
select bit_shift (18, 6);
1152
select bit_shift (-18, 6);
-1152
select bit_shift (1152, -6);
18
select bit_shift (-1152, -6);
-18
</pre>
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<div class="refsect1">
<div class="refsect1title">See Also</div>
<p>
<a href="fn_bit_and.html">bit_and</a>
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<a href="fn_bit_or.html">bit_or</a>
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<a href="fn_bit_not.html">bit_not</a>
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<a href="fn_bit_xor.html">bit_xor</a>
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