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
|
<!DOCTYPE html>
<html>
<!-- Created by GNU Texinfo 7.1.1, https://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Single Precision Data Types (GNU Octave (version 10.3.0))</title>
<meta name="description" content="Single Precision Data Types (GNU Octave (version 10.3.0))">
<meta name="keywords" content="Single Precision Data Types (GNU Octave (version 10.3.0))">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link href="index.html" rel="start" title="Top">
<link href="Concept-Index.html" rel="index" title="Concept Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Numeric-Data-Types.html" rel="up" title="Numeric Data Types">
<link href="Integer-Data-Types.html" rel="next" title="Integer Data Types">
<link href="Ranges.html" rel="prev" title="Ranges">
<style type="text/css">
<!--
a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em}
div.example {margin-left: 3.2em}
span:hover a.copiable-link {visibility: visible}
strong.def-name {font-family: monospace; font-weight: bold; font-size: larger}
-->
</style>
<link rel="stylesheet" type="text/css" href="octave.css">
</head>
<body lang="en">
<div class="section-level-extent" id="Single-Precision-Data-Types">
<div class="nav-panel">
<p>
Next: <a href="Integer-Data-Types.html" accesskey="n" rel="next">Integer Data Types</a>, Previous: <a href="Ranges.html" accesskey="p" rel="prev">Ranges</a>, Up: <a href="Numeric-Data-Types.html" accesskey="u" rel="up">Numeric Data Types</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<h3 class="section" id="Single-Precision-Data-Types-1"><span>4.3 Single Precision Data Types<a class="copiable-link" href="#Single-Precision-Data-Types-1"> ¶</a></span></h3>
<p>Octave includes support for single precision data types, and most of the
functions in Octave accept single precision values and return single
precision answers. A single precision variable is created with the
<code class="code">single</code> function.
</p>
<a class="anchor" id="XREFsingle"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-single"><span><code class="def-type"><var class="var">y</var> =</code> <strong class="def-name">single</strong> <code class="def-code-arguments">(<var class="var">x</var>)</code><a class="copiable-link" href="#index-single"> ¶</a></span></dt>
<dd><p>Convert <var class="var">x</var> to single precision type.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="Numeric-Data-Types.html#XREFdouble">double</a>.
</p></dd></dl>
<p>for example:
</p>
<div class="example">
<div class="group"><pre class="example-preformatted">sngl = single (rand (2, 2))
⇒ sngl =
0.37569 0.92982
0.11962 0.50876
class (sngl)
⇒ single
</pre></div></div>
<p>Many functions can also return single precision values directly. For
example
</p>
<div class="example">
<div class="group"><pre class="example-preformatted">ones (2, 2, "single")
zeros (2, 2, "single")
eye (2, 2, "single")
rand (2, 2, "single")
NaN (2, 2, "single")
NA (2, 2, "single")
Inf (2, 2, "single")
</pre></div></div>
<p>will all return single precision matrices.
</p>
</div>
</body>
</html>
|
