kotlin-stdlib / kotlin.math / acosh

acosh

Common
JVM
JS
Native
1.2
fun acosh(x: Double): Double
fun acosh(x: Float): Float

Computes the inverse hyperbolic cosine of the value x.

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

Special cases:

  • acosh(NaN) is NaN
  • acosh(x) is NaN when x < 1
  • acosh(+Inf) is +Inf