1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
<html>
<head><title>ASH.html -- ACL2 Version 3.1</title></head>
<body text=#000000 bgcolor="#FFFFFF">
<h2>ASH</h2>arithmetic shift operation
<pre>Major Section: <a href="PROGRAMMING.html">PROGRAMMING</a>
</pre><p>
<code>(ash i c)</code> is the result of taking the two's complement
representation of the integer <code>i</code> and shifting it by <code>c</code> bits: shifting
left and padding with <code>c</code> <code>0</code> bits if <code>c</code> is positive, shifting right and
dropping <code>(abs c)</code> bits if <code>c</code> is negative, and simply returning <code>i</code> if <code>c</code>
is <code>0</code>.
<p>
The <a href="GUARD.html">guard</a> for <code>ash</code> requires that its arguments are integers.<p>
<code>Ash</code> is a Common Lisp function. See any Common Lisp documentation
for more information.
<br><br><br><a href="acl2-doc.html"><img src="llogo.gif"></a> <a href="acl2-doc-index.html"><img src="index.gif"></a>
</body>
</html>
|
