<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.5, http://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 5.1.0))</title> <meta name="description" content="Single Precision Data Types (GNU Octave (version 5.1.0))"> <meta name="keywords" content="Single Precision Data Types (GNU Octave (version 5.1.0))"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <link href="index.html#Top" rel="start" title="Top"> <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="Numeric-Data-Types.html#Numeric-Data-Types" rel="up" title="Numeric Data Types"> <link href="Integer-Data-Types.html#Integer-Data-Types" rel="next" title="Integer Data Types"> <link href="Ranges.html#Ranges" rel="prev" title="Ranges"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> <link rel="stylesheet" type="text/css" href="octave.css"> </head> <body lang="en"> <a name="Single-Precision-Data-Types"></a> <div class="header"> <p> Next: <a href="Integer-Data-Types.html#Integer-Data-Types" accesskey="n" rel="next">Integer Data Types</a>, Previous: <a href="Ranges.html#Ranges" accesskey="p" rel="prev">Ranges</a>, Up: <a href="Numeric-Data-Types.html#Numeric-Data-Types" 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#Concept-Index" title="Index" rel="index">Index</a>]</p> </div> <hr> <a name="Single-Precision-Data-Types-1"></a> <h3 class="section">4.3 Single Precision Data Types</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>single</code> function. </p> <a name="XREFsingle"></a><dl> <dt><a name="index-single"></a><em></em> <strong>single</strong> <em>(<var>x</var>)</em></dt> <dd><p>Convert <var>x</var> to single precision type. </p> <p><strong>See also:</strong> <a href="Numeric-Data-Types.html#XREFdouble">double</a>. </p></dd></dl> <p>for example: </p> <div class="example"> <pre class="example">sngl = single (rand (2, 2)) ⇒ sngl = 0.37569 0.92982 0.11962 0.50876 class (sngl) ⇒ single </pre></div> <p>Many functions can also return single precision values directly. For example </p> <div class="example"> <pre class="example">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> <p>will all return single precision matrices. </p> </body> </html>