The Math.asinh()
function returns the hyperbolic arcsine of a number, that is
The Math.asinh()
function returns the hyperbolic arcsine of a number, that is
Math.asinh(x)
x
A number.
The hyperbolic arcsine of the given number.
Because asinh()
is a static method of Math
, you always use it as Math.asinh()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Math.asinh(1); // 0.881373587019543 Math.asinh(0); // 0
Math.asinh
can be emulated with the following function:
if (!Math.asinh) Math.asinh = function(x) { var absX = Math.abs(x), w if (absX < 3.725290298461914e-9) // |x| < 2^-28 return x if (absX > 268435456) // |x| > 2^28 w = Math.log(absX) + Math.LN2 else if (absX > 2) // 2^28 >= |x| > 2 w = Math.log(2 * absX + 1 / (Math.sqrt(x * x + 1) + absX)) else var t = x * x, w = Math.log1p(absX + t / (1 + Math.sqrt(1 + t))) return x > 0 ? w : -w }
Math.log1p
may also have to be polyfilled; see Math.log1p for details.
Specification |
---|
ECMAScript Language Specification # sec-math.asinh |
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 | |
asinh |
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/asinh