void test_complex()
{
	complex a = 1+2i;
	complex b = 2+3i;
	
	complex c = a*b;
	
	out_complex("c=", c);
	
	vector<complex> aa(2), bb(2), cc(2);
	
	aa = a;
	bb = b;
	
	cc = aa*bb;
	
	complex d;
	d = aa[1] * bb[1];
	out_complex("d=", d);
	return;
}

quote:

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How to use complex numbers in the nlsf e.g.

a=exp(-i*b*x);
y=abs(a+b);

?

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