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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>AD Constructors: Example and Test</title>
<meta http-equiv='Content-Type' content='text/html' charset='utf-8'/>
<meta name="description" id="description" content="AD Constructors: Example and Test"/>
<meta name="keywords" id="keywords" content=" ad constructors: example and test constructor Ad object "/>
<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='_ad_ctor.cpp_xml.js'>
</script>
</head>
<body>
<table><tr>
<td>
<a href="http://www.coin-or.org/CppAD/" target="_top"><img border="0" src="_image.gif"/></a>
</td>
<td><a href="ad_ctor.xml" target="_top">Prev</a>
</td><td><a href="ad_assign.xml" target="_top">Next</a>
</td><td>
<select onchange='choose_across0(this)'>
<option>Index-&gt;</option>
<option>contents</option>
<option>reference</option>
<option>index</option>
<option>search</option>
<option>external</option>
</select>
</td>
<td>
<select onchange='choose_up0(this)'>
<option>Up-&gt;</option>
<option>CppAD</option>
<option>AD</option>
<option>ad_ctor</option>
<option>ad_ctor.cpp</option>
</select>
</td>
<td>
<select onchange='choose_down3(this)'>
<option>CppAD-&gt;</option>
<option>Install</option>
<option>Introduction</option>
<option>AD</option>
<option>ADFun</option>
<option>preprocessor</option>
<option>multi_thread</option>
<option>library</option>
<option>ipopt_solve</option>
<option>Example</option>
<option>speed</option>
<option>Appendix</option>
</select>
</td>
<td>
<select onchange='choose_down2(this)'>
<option>AD-&gt;</option>
<option>ad_ctor</option>
<option>ad_assign</option>
<option>Convert</option>
<option>ADValued</option>
<option>BoolValued</option>
<option>VecAD</option>
<option>base_require</option>
</select>
</td>
<td>
<select onchange='choose_down1(this)'>
<option>ad_ctor-&gt;</option>
<option>ad_ctor.cpp</option>
</select>
</td>
<td>ad_ctor.cpp</td>
<td>Headings</td>
</tr></table><br/>



<center><b><big><big>AD Constructors: Example and Test</big></big></b></center>
<code><font color="blue"><pre style='display:inline'> 

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

bool ad_ctor(void)
{	bool ok = true;   // initialize test result flag
	using CppAD::AD;  // so can use AD in place of CppAD::AD

	// default constructor
	<a href="ad.xml" target="_top">AD</a>&lt;double&gt; a;
	a = 0.;
	ok &amp;= a == 0.;

	// constructor from base type
	<a href="ad.xml" target="_top">AD</a>&lt;double&gt; b(1.);   
	ok &amp;= b == 1.;

	// constructor from another type that converts to the base type
	<a href="ad.xml" target="_top">AD</a>&lt;double&gt; c(2);
	ok &amp;= c == 2.;

	// constructor from <a href="ad.xml" target="_top">AD</a>&lt;Base&gt;
	<a href="ad.xml" target="_top">AD</a>&lt;double&gt; d(c);    
	ok &amp;= d == 2.;

	// constructor from a VecAD&lt;Base&gt; element
	CppAD::VecAD&lt;double&gt; v(1);
	v[0] = 3.;
	<a href="ad.xml" target="_top">AD</a>&lt;double&gt; e( v[0] );
	ok &amp;= e == 3.;

	return ok;
}

</pre>

</font></code>

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

</body>
</html>