NearEqual Function: Example and Test
Keywords: nearequal function: example test file name

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NearEqual Function: Example and Test
File Name
This file is called `near_equal.cpp` instead of `NearEqual.cpp` to avoid a name conflict with `../lib/NearEqual.cpp` in the corresponding Microsoft project file. `

    # include <cppad/utility/near_equal.hpp>

    # include <complex>

    bool Near_Equal(void)
    {	bool ok = true;
    	typedef std::complex<double> 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 &= NearEqual(x, y, zero, a);
    	ok &= NearEqual(x, y, r, zero);
    	ok &= NearEqual(x, y, r, a);

    	ok &= ! NearEqual(x, y, r / 10., a / 10.);
    	ok &= ! NearEqual(inf, inf, r, a);
    	ok &= ! NearEqual(-inf, -inf, r, a);
    	ok &= ! NearEqual(nan, nan, r, a);

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

    	ok &= NearEqual(X, Y, zero, a);
    	ok &= NearEqual(X, Y, r, zero);
    	ok &= NearEqual(X, Y, r, a);

    	ok &= ! NearEqual(X, Y, r / 10., a / 10.);
    	ok &= ! NearEqual(Inf, Inf, r, a);
    	ok &= ! NearEqual(-Inf, -inf, r, a);
    	ok &= ! NearEqual(Nan, Nan, r, a);

    	return ok;
    }

`

Input File: example/near_equal.cpp