Platform and version requirements: JVM (1.2), JS (1.2), 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

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Licensed under the Apache License, Version 2.0.