<?xml version="1.0" encoding="utf-8" ?> <!-- for emacs: -*- coding: utf-8 -*- -->
<!-- Apache may like this line in the file .htaccess: AddCharset utf-8 .html -->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat.dtd" >
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head><title>round -- round a number</title>
<link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/>
</head>
<body>
<table class="buttons">
<tr>
<td><div><a href="_row_spand_spcolumn_spoperations.html">next</a> | <a href="_rotate_lp__Z__Z_cm__Visible__List_rp.html">previous</a> | <a href="_row_spand_spcolumn_spoperations.html">forward</a> | <a href="_rotate_lp__Z__Z_cm__Visible__List_rp.html">backward</a> | up | <a href="index.html">top</a> | <a href="master.html">index</a> | <a href="toc.html">toc</a> | <a href="http://www.math.uiuc.edu/Macaulay2/">Macaulay2 web site</a></div>
</td>
</tr>
</table>
<hr/>
<div><h1>round -- round a number</h1>
<div class="single"><h2>Description</h2>
<div><div><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>round x</tt></div>
</dd></dl>
</div>
</li>
<li>Inputs:<ul><li><span><tt>x</tt>, a number</span></li>
</ul>
</li>
<li>Outputs:<ul><li><span>the integer nearest to <tt>x</tt></span></li>
</ul>
</li>
</ul>
<table class="examples"><tr><td><pre>i1 : round(-2.3)
o1 = -2</pre>
</td></tr>
<tr><td><pre>i2 : round(-2.3+5*ii)
o2 = -2</pre>
</td></tr>
<tr><td><pre>i3 : round(2/3)
o3 = 1</pre>
</td></tr>
</table>
</div>
<div><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>round(n,x)</tt></div>
</dd></dl>
</div>
</li>
<li>Inputs:<ul><li><span><tt>n</tt>, <span>an <a href="___Z__Z.html">integer</a></span></span></li>
<li><span><tt>x</tt>, <span>a <a href="___R__R.html">real number</a></span></span></li>
</ul>
</li>
<li>Outputs:<ul><li><span>the real number with just n decimal digits to the right of the decimal point nearest to <tt>x</tt></span></li>
</ul>
</li>
</ul>
<table class="examples"><tr><td><pre>i4 : round(2,1234.5678)
o4 = 1234.57
o4 : RR (of precision 53)</pre>
</td></tr>
<tr><td><pre>i5 : round(-2,1234.5678)
o5 = 1200
o5 : RR (of precision 53)</pre>
</td></tr>
</table>
</div>
</div>
</div>
<div class="single"><h2>See also</h2>
<ul><li><span><a href="_floor.html" title="floor function">floor</a> -- floor function</span></li>
<li><span><a href="_ceiling.html" title="ceiling function">ceiling</a> -- ceiling function</span></li>
</ul>
</div>
<div class="waystouse"><h2>Ways to use <tt>round</tt> :</h2>
<ul><li>round(CC)</li>
<li>round(QQ)</li>
<li>round(RR)</li>
<li>round(ZZ)</li>
<li>round(ZZ,RR)</li>
</ul>
</div>
</div>
</body>
</html>
