/// <summary>Trigonometric Hyperbolic Tangent (tanh, Tangens hyperbolicus) of this <c>Complex</c>.</summary>
public Complex HyperbolicTangent()
{
if (IsReal)
{
return(new Complex(Trig.HyperbolicTangent(real), 0d));
}
double cosi = Trig.Cosine(imag);
double sinhr = Trig.HyperbolicSine(real);
double denom = cosi * cosi + sinhr * sinhr;
return(new Complex(Trig.HyperbolicCosine(real) * sinhr / denom, cosi * Trig.Sine(imag) / denom));
}
