JavaScript atanh

Returns the inverse hyperbolic tangent of the number, i.e. the value whose hyperbolic tangent is number

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function atanh (arg) {
    // Returns the inverse hyperbolic tangent of the number, i.e. the value whose hyperbolic tangent is number  
    // 
    // version: 1008.1718
    // discuss at: http://phpjs.org/functions/atanh    // +   original by: Onno Marsman
    // *     example 1: atanh(0.3);
    // *     returns 1: 0.3095196042031118
    return 0.5 * Math.log((1+arg)/(1-arg));
}

Examples

Running

1

atanh(0.3);

Should return

1

0.3095196042031118

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

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Eventually we want all code to pass or at least take into consideration most fixes suggested by JsLint, following this JsLint configuration we’ve decided on.

Authors

Thanks to the following developers, you get to have atanh goodness in JavaScript.

• Onno Marsman ( original )

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