<?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>precision</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="_prefix__Path.html">next</a> | <a href="_powers.html">previous</a> | <a href="_prefix__Path.html">forward</a> | <a href="_powers.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>precision</h1> <div class="single"><h2>Synopsis</h2> <ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>precision x</tt></div> </dd></dl> </div> </li> <li><div class="single">Inputs:<ul><li><span><tt>x</tt>, <span>a <a href="___Ring.html">ring</a></span>, <span>a <a href="___Matrix.html">matrix</a></span>, <span>a <a href="___Ring__Element.html">ring element</a></span>, or <span>a <a href="___Number.html">number</a></span></span></li> </ul> </div> </li> <li><div class="single">Outputs:<ul><li><span><span>an <a href="___Z__Z.html">integer</a></span>, the precision to which <tt>x</tt> or its instances are stored</span></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div><table class="examples"><tr><td><pre>i1 : precision 3p111 o1 = 111</pre> </td></tr> <tr><td><pre>i2 : precision (RR[x]) o2 = 53</pre> </td></tr> <tr><td><pre>i3 : precision 3 o3 = infinity o3 : InfiniteNumber</pre> </td></tr> </table> </div> </div> <div class="waystouse"><h2>Ways to use <tt>precision</tt> :</h2> <ul><li>precision(InexactField)</li> <li>precision(InexactNumber)</li> <li>precision(Matrix)</li> <li>precision(MutableMatrix)</li> <li>precision(Number)</li> <li>precision(PolynomialRing)</li> <li>precision(QuotientRing)</li> <li>precision(Ring)</li> <li>precision(RingElement)</li> <li><span><tt>precision(FractionField)</tt> (missing documentation<!-- tag: (precision,FractionField) -->)</span></li> <li><span><tt>precision(GaloisField)</tt> (missing documentation<!-- tag: (precision,GaloisField) -->)</span></li> </ul> </div> </div> </body> </html>