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

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

# include &lt;sstream&gt;  // std::ostringstream
# include &lt;string&gt;   // std::string
# include &lt;iomanip&gt;  // std::setprecision, setw, setfill, right

namespace {
	template &lt;class S&gt;
	void set_ostream(S &amp;os)
	{	os 
		&lt;&lt; std::setprecision(4) // 4 digits of precision
		&lt;&lt; std::setw(6)         // 6 characters per field
		&lt;&lt; std::setfill(' ')    // fill with spaces
		&lt;&lt; std::right;          // adjust value to the right
	}
}

bool ad_output(void)
{	bool ok = true;

	// This output stream is an ostringstream for testing purposes.
	// You can use &lt;&lt; with other types of streams; i.e., std::cout.
	std::ostringstream stream;

	// ouput an <a href="ad.xml" target="_top">AD</a>&lt;double&gt; object
	CppAD::<a href="ad.xml" target="_top">AD</a>&lt;double&gt;  pi = 4. * atan(1.); // 3.1415926536
	set_ostream(stream);
	stream &lt;&lt; pi;

	// ouput a VecAD&lt;double&gt;::reference object
	CppAD::VecAD&lt;double&gt; v(1);
	CppAD::<a href="ad.xml" target="_top">AD</a>&lt;double&gt; zero(0);
	v[zero]   = exp(1.);                  // 2.7182818285
	set_ostream(stream); 
	stream &lt;&lt; v[zero];

	// convert output from stream to string
	std::string str = stream.str();

	// check the output
	ok      &amp;= (str == &quot; 3.142 2.718&quot;);

	return ok;
}
</pre>

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

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