1 files changed, 79 insertions, 0 deletions
diff --git a/docsrc/xlisp/xlisp-doc/reference/lognot.htm b/docsrc/xlisp/xlisp-doc/reference/lognot.htm
new file mode 100644
index 0000000..3ca21b4
--- /dev/null
+++ b/docsrc/xlisp/xlisp-doc/reference/lognot.htm
@@ -0,0 +1,79 @@
+<html><head><title>XLISP lognot</title>
+
+<link rel="stylesheet" type="text/css" href="reference.css">
+
+</head>
+
+<body>
+
+<a href="../start.htm">Nyquist / XLISP 2.0</a>&nbsp; -&nbsp;
+<a href="../manual/contents.htm">Contents</a> |
+<a href="../tutorials/tutorials.htm">Tutorials</a> |
+<a href="../examples/examples.htm">Examples</a> |
+<a href="reference-index.htm">Reference</a>
+
+<hr>
+
+<h1>lognot</h1>
+
+<hr>
+
+<p><table cellpadding="0" cellspacing="0" style="margin-left:10px"><tbody>
+<tr valign="top">
+  <td><nobr>Type:</nobr></td>
+  <td><nobr>&nbsp;&nbsp;-&nbsp;&nbsp;</nobr></td>
+  <td width="100%"><nobr>function (subr)</nobr></td>
+</tr>
+<tr valign="top">
+  <td><nobr>Source:</nobr></td>
+  <td><nobr>&nbsp;&nbsp;-&nbsp;&nbsp;</nobr></td>
+  <td width="100%"><nobr>xlmath.c</nobr></td>
+</tr>
+</tbody></table></p>
+
+<h2>Syntax</h2>
+
+<dl>
+<dt>(lognot <i>expr</i>)</dt>
+<dd><i>expr</i> - an integer expression<br>
+returns - the bitwise inversion of number</dd>
+</dl>
+
+<h2>Description</h2>
+
+<p> The 'lognot' function returns the logical bitwise inversion of the
+expression.</p>
+
+<h2>Examples</h2>
+
+<pre class="example">
+(lognot 255)                 <font color="#008844">; returns -256</font>
+(lognot #xffff0000)          <font color="#008844">; returns 65535</font>
+(lognot #x00000000)          <font color="#008844">; returns -1</font>
+(lognot 1)                   <font color="#008844">; returns -2</font>
+
+(logand (lognot 256) 65535)  <font color="#008844">; returns 65279</font>
+(lognot #xFFFFFFFE)          <font color="#008844">; returns 1</font>
+(lognot #xFFFFFFFC)          <font color="#008844">; returns 3</font>
+</pre>
+
+<p><b>Note:</b> XLISP does not check when read-macro expansions like '#x0FF'
+are out of bounds. It gives no error message and will just truncate the
+number to the low-order bits that it can deal with [usually 32 bits or 8 hex
+digits].</p>
+
+<p>See the
+<a href="../manual/xlisp-man-024.htm#lognot">lognot</a>
+function in the <nobr>XLISP 2.0</nobr> manual.</p>
+
+<p><nobr>&nbsp;&nbsp;<a href="#top">Back to Top</nobr></a></p>
+
+<hr>
+
+<a href="../start.htm">Nyquist / XLISP 2.0</a>&nbsp; -&nbsp;
+<a href="../manual/contents.htm">Contents</a> |
+<a href="../tutorials/tutorials.htm">Tutorials</a> |
+<a href="../examples/examples.htm">Examples</a> |
+<a href="reference-index.htm">Reference</a>
+
+</body></html>
+\ No newline at end of file