The Math.atanh()
function returns the hyperbolic arctangent of a number, that is
The Math.atanh()
function returns the hyperbolic arctangent of a number, that is
Math.atanh(x)
x
A number.
The hyperbolic arctangent of the given number.
Because atanh()
is a static method of Math
, you always use it as Math.atanh()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Math.atanh(-2); // NaN Math.atanh(-1); // -Infinity Math.atanh(0); // 0 Math.atanh(0.5); // 0.5493061443340548 Math.atanh(1); // Infinity Math.atanh(2); // NaN
For values greater than 1 or less than -1, NaN
is returned.
For , we have so this can be emulated by the following function:
Math.atanh = Math.atanh || function(x) { return Math.log((1+x)/(1-x)) / 2; };
Specification |
---|
ECMAScript Language Specification # sec-math.atanh |
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
atanh |
38
|
12
|
25
|
No
|
25
|
8
|
38
|
38
|
25
|
25
|
8
|
3.0
|
1.0
|
0.12.0
|
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/atanh