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<?xml version='1.0'?>
<html xmlns='http://www.w3.org/1999/xhtml'
      xmlns:math='http://www.w3.org/1998/Math/MathML'
>
<head>
<title>NearEqual Function: Example and Test</title>
<meta http-equiv='Content-Type' content='text/html' charset='utf-8'/>
<meta name="description" id="description" content="NearEqual Function: Example and Test"/>
<meta name="keywords" id="keywords" content=" nearequal function: example and test Nearequal file name "/>
<style type='text/css'>
body { color : black }
body { background-color : white }
A:link { color : blue }
A:visited { color : purple }
A:active { color : purple }
</style>
<script type='text/javascript' language='JavaScript' src='_near_equal.cpp_xml.js'>
</script>
</head>
<body>
<table><tr>
<td>
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</td>
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</tr></table><br/>



<center><b><big><big>NearEqual Function: Example and Test</big></big></b></center>
<br/>
<b><big><a name="File Name" id="File Name">File Name</a></big></b>
<br/>
This file is called <code><font color="blue">near_equal.cpp</font></code> instead of 
<code><font color="blue">NearEqual.cpp</font></code>
to avoid a name conflict with <code><font color="blue">../lib/NearEqual.cpp</font></code>
in the corresponding Microsoft project file.

<code><font color="blue">
<pre style='display:inline'> 

# include &lt;cppad/near_equal.hpp&gt;

# include &lt;complex&gt;

bool Near_Equal(void)
{	bool ok = true;
	typedef std::complex&lt;double&gt; Complex;
	using CppAD::NearEqual;

	// double 
	double x    = 1.00000;
	double y    = 1.00001;
	double a    =  .00003;
	double r    =  .00003;
	double zero = 0.; 
	double inf  = 1. / zero;
	double nan  = 0. / zero;

	ok &amp;= <a href="nearequal.xml" target="_top">NearEqual</a>(x, y, zero, a);
	ok &amp;= <a href="nearequal.xml" target="_top">NearEqual</a>(x, y, r, zero);
	ok &amp;= <a href="nearequal.xml" target="_top">NearEqual</a>(x, y, r, a);

	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(x, y, r / 10., a / 10.);
	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(inf, inf, r, a);
	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(-inf, -inf, r, a);
	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(nan, nan, r, a);

	// complex 
	Complex X(x, x / 2.);
	Complex Y(y, y / 2.);
	Complex Inf(inf, zero);
	Complex Nan(zero, nan);

	ok &amp;= <a href="nearequal.xml" target="_top">NearEqual</a>(X, Y, zero, a);
	ok &amp;= <a href="nearequal.xml" target="_top">NearEqual</a>(X, Y, r, zero);
	ok &amp;= <a href="nearequal.xml" target="_top">NearEqual</a>(X, Y, r, a);

	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(X, Y, r / 10., a / 10.);
	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(Inf, Inf, r, a);
	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(-Inf, -inf, r, a);
	ok &amp;= ! <a href="nearequal.xml" target="_top">NearEqual</a>(Nan, Nan, r, a);

	return ok;
}

</pre>

</font></code>


<hr/>Input File: example/near_equal.cpp

</body>
</html>