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<html><head><title>XLISP gcd</title>
<link rel="stylesheet" type="text/css" href="reference.css">
</head>
<body>
<a href="../start.htm">Nyquist / XLISP 2.0</a> -
<a href="../manual/contents.htm">Contents</a> |
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<a href="../examples/examples.htm">Examples</a> |
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<hr>
<h1>gcd</h1>
<hr>
<p><table cellpadding="0" cellspacing="0" style="margin-left:10px"><tbody>
<tr valign="top">
<td><nobr>Type:</nobr></td>
<td><nobr> - </nobr></td>
<td width="100%"><nobr>function (subr)</nobr></td>
</tr>
<tr valign="top">
<td><nobr>Source:</nobr></td>
<td><nobr> - </nobr></td>
<td width="100%"><nobr>xlmath.c</nobr></td>
</tr>
</tbody></table></p>
<h2>Syntax</h2>
<dl>
<dt>(gcd [<i>int</i> ... ])</dt>
<dd><i>int</i> - an integer expression<br>
returns - the greatest common divisor</dd>
</dl>
<h2>Description</h2>
<p>The 'gcd' function returns the greatest common divisor of a series of
integers. If no arguments are given, a zero is returned. If only one
argument is given, the absolute value of the argument is returned. The
successful result is always a positive integer.</p>
<h2>Examples</h2>
<pre class="example">
(gcd 51 34) <font color="#008844">; returns 17</font>
(gcd 99 66 22) <font color="#008844">; returns 11</font>
(gcd -99 66 -33) <font color="#008844">; returns 33</font>
(gcd -14) <font color="#008844">; returns 14</font>
(gcd 0) <font color="#008844">; returns 0</font>
(gcd) <font color="#008844">; returns 0</font>
(gcd .2) <font color="#008844">; error: bad argument type - 0.2</font>
</pre>
<p>See the
<a href="../manual/xlisp-man-023.htm#gcd">gcd</a>
function in the <nobr>XLISP 2.0</nobr> manual.</p>
<p><nobr> <a href="#top">Back to Top</nobr></a></p>
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