Try the revamped Kotlin docs design →

Try the revamped Kotlin docs design!

Let’s go

← Docs

kotlin-stdlib / kotlin.math / atanh

atanh

Common

JVM

JS

Native

1.2

fun atanh(x: Double): Double
(Common source) (JVM source) (JS source) (Native source)

fun atanh(x: Float): Float
(Common source) (JVM source) (JS source) (Native source)

Computes the inverse hyperbolic tangent of the value x.

The returned value is y such that tanh(y) == x.

Special cases:

tanh(NaN) is NaN
tanh(x) is NaN when x > 1 or x < -1
tanh(1.0) is +Inf
tanh(-1.0) is -Inf