Java Utililty Methods atanh

List of utility methods to do atanh

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Description

The list of methods to do atanh are organized into topic(s).

Method

doubleatanh(double a)
Calculates inverse hyperbolic tangent of a double value. 
final double mult;
if (Double.doubleToRawLongBits(a) < 0) {
    a = Math.abs(a);
    mult = -0.5d;
} else {
    mult = 0.5d;
return mult * Math.log((1.0d + a) / (1.0d - a));
...
doubleatanh(double x)
Returns the inverse (arc) hyperbolic tangent of a double. 
double y = Math.abs(x);
double ans;
if (Double.isNaN(x)) {
    ans = Double.NaN;
} else if (y < 1.82501e-08) {
    ans = x;
} else if (y <= 0.5) {
    ans = x * (1.0 + csevl(8.0 * x * x - 1.0, ATANH_COEF));
...
doubleatanh(double z)
atanh 
return (StrictMath.log((1.0 + z) * StrictMath.sqrt(1.0 / (1.0 - z * z))));