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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>exp_eps: Verify Zero Order Forward Sweep</title>
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<center><b><big><big>exp_eps: Verify Zero Order Forward Sweep</big></big></b></center>
<code><font color='blue'><pre style='display:inline'> # include &lt;cmath&gt;                // for fabs function
bool exp_eps_for0(double *v0)    // double v0[8]
{	bool  ok = true;
	double x = .5;

	v0[1] = x;                                  // abs_x = x;
	ok  &amp;= std::fabs( v0[1] - 0.5) &lt; 1e-10;

	v0[2] = 1. * v0[1];                         // temp = term * abs_x;
	ok  &amp;= std::fabs( v0[2] - 0.5) &lt; 1e-10;

	v0[3] = v0[2] / 1.;                         // term = temp / Type(k);
	ok  &amp;= std::fabs( v0[3] - 0.5) &lt; 1e-10;

	v0[4] = 1. + v0[3];                         // sum = sum + term;
	ok  &amp;= std::fabs( v0[4] - 1.5) &lt; 1e-10;

	v0[5] = v0[3] * v0[1];                      // temp = term * abs_x;
	ok  &amp;= std::fabs( v0[5] - 0.25) &lt; 1e-10;

	v0[6] = v0[5] / 2.;                         // term = temp / Type(k);
	ok  &amp;= std::fabs( v0[6] - 0.125) &lt; 1e-10;

	v0[7] = v0[4] + v0[6];                      // sum = sum + term;
	ok  &amp;= std::fabs( v0[7] - 1.625) &lt; 1e-10;

	return ok;
}
bool exp_eps_for0(void)
{	double v0[8];
	return exp_eps_for0(v0);
}
</pre></font></code>


<hr/>Input File: introduction/exp_apx/exp_eps_for0.cpp

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