<?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>defaultPrecision -- default precision of numbers</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="___Degree.html">next</a> | <a href="_default.html">previous</a> | <a href="___Degree.html">forward</a> | <a href="_default.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>defaultPrecision -- default precision of numbers</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>defaultPrecision = n</tt></div> </dd></dl> </div> </li> <li><div class="single">Inputs:<ul><li><span><tt>n</tt>, <span>an <a href="___Z__Z.html">integer</a></span></span></li> </ul> </div> </li> <li><div class="single">Consequences:<ul><li>henceforth, when a real or complex number is to be created, and no precision is otherwise specified, the precision will be <tt>n</tt></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div><table class="examples"><tr><td><pre>i1 : defaultPrecision o1 = 53</pre> </td></tr> <tr><td><pre>i2 : 1/3. o2 = .333333333333333 o2 : RR (of precision 53)</pre> </td></tr> <tr><td><pre>i3 : defaultPrecision=100 o3 = 100</pre> </td></tr> <tr><td><pre>i4 : 1/3. o4 = .333333333333333333333333333333 o4 : RR (of precision 100)</pre> </td></tr> <tr><td><pre>i5 : RR[x] o5 = RR [x] 100 o5 : PolynomialRing</pre> </td></tr> <tr><td><pre>i6 : numeric pi o6 = 3.14159265358979323846264338328 o6 : RR (of precision 100)</pre> </td></tr> </table> </div> </div> <div class="waystouse"><h2>For the programmer</h2> <p>The object <a href="_default__Precision.html" title="default precision of numbers">defaultPrecision</a> is <span>an <a href="___Z__Z.html">integer</a></span>.</p> </div> </div> </body> </html>