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

# ifdef _MSC_VER
// Supress Microsoft compiler warning about possible loss of precision,
// in the constructors (when converting to std::complex&lt;float&gt;)
//	Float one = 1
//	Float two = 2
// 1 and 2 are small enough so no loss of precision when converting to float.
# pragma warning(disable:4244)
# endif

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

namespace {
	typedef CppAD::<a href="ad.xml" target="_top">AD</a>&lt;double&gt; Float;
	//
	// -----------------------------------------------------------------
	bool check_epsilon(void)
	{	bool ok    = true;
		Float eps   = CppAD::numeric_limits&lt;Float&gt;::epsilon();
		Float eps2  = eps / 2.0; 
		Float check = 1.0 + eps;
		ok         &amp;= 1.0 !=  check;
		check       = 1.0 + eps2;
		ok         &amp;= 1.0 == check;
		return ok;
	}
	// -----------------------------------------------------------------
	bool check_min(void)
	{	bool ok     = true;
		Float min   = CppAD::numeric_limits&lt;Float&gt;::min();
		Float eps   = CppAD::numeric_limits&lt;Float&gt;::epsilon();
		//
		Float match = (min / 100. ) * 100.;
		ok         &amp;= abs(match/min - 1.0) &gt; 3.0 * eps;
		//
		match       = (min * 100.) / (100. * (1.0 - eps));
		ok         &amp;= abs(match / min - 1.0) &lt; 3.0 * eps;
		return ok;
	}
	// -----------------------------------------------------------------
	bool check_max(void)
	{	bool ok     = true;
		Float max   = CppAD::numeric_limits&lt;Float&gt;::max();
		Float eps   = CppAD::numeric_limits&lt;Float&gt;::epsilon();
		//
		Float match = (max * 100.) / 100.;
		ok         &amp;= abs(match / max - 1.0) &gt; 3.0 * eps;
		//
		match       = (max / 100. ) * (100. * (1.0 - eps));
		ok         &amp;= abs(match/max - 1.0) &lt; 3.0 * eps;
		return ok;
	}
}

bool limits(void)
{	bool ok = true;

	ok &amp;= check_epsilon();
	ok &amp;= check_max();
	ok &amp;= check_min();

	return ok;
}
</pre>

</font></code>


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

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