1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
<html><head><title>XLISP /=</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> |
<a href="../tutorials/tutorials.htm">Tutorials</a> |
<a href="../examples/examples.htm">Examples</a> |
<a href="reference-index.htm">Reference</a>
<hr>
<h1>/=</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>
<p><div class="box">
<dl>
<dt><nobr>(/= <i>expr1</i> <i>expr2</i> ...)</nobr></dt>
<dd><i>exprN </i> - a numeric expression<br>
returns - <a href="t.htm"> T </a> if the results of
comparing the expressions are all true,
<a href="nil.htm">NIL</a> otherwise</dd>
</dl>
</div></p>
<h2>Description</h2>
<p>The <nobr>'/=' [not-equal]</nobr> function takes an arbitrary number of
numeric arguments. It checks to see if all the numeric arguments are
different. <a href="t.htm"> T </a> is returned if
the arguments are numerically not equivalent,
<a href="nil.htm">NIL</a> is returned otherwise.</p>
<h2>Examples</h2>
<pre class="example">
(/= 1 1) => NIL
(/= 1 2) => T
(/= 1 1.0) => NIL
(/= 1 2 3) => T
(/= 1 2 2) => NIL
(/= "a" "b") => <font color="#AA0000">error: bad argument type</font>
(setq a 1 b 12.4) => 12.4 <font color="#008844">; set up A and B with values</font>
(/= a b) => NIL
</pre>
<p>See <a href="setq.htm">setq</a>.</p>
<p><div class="box">
<p><b>XLISP Bug</b></p>
<pre class="example">
(/= 1 2 3) => T <font color="#008844">; OK</font>
(/= 1 2 3 2 1) => T <font color="#AA0000">; wrong</font>
</pre>
<p>This is only a problem for the '/=' function. <nobr>The bug</nobr> can be
reproduced with <nobr>Nyquist 3.03</nobr> <nobr>in November 2010</nobr>.</p>
</div></p>
<p>See also:</p>
<ul>
<li><nobr>Contents → <a href="../manual/contents.htm#arithmetic-functions">Arithmetic Functions</a></nobr></li>
</ul>
<p><nobr> <a href="#top">Back to Top</nobr></a></p>
<hr>
<a href="../start.htm">Nyquist / XLISP 2.0</a> -
<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>
|
