math.acosh() function

Warning! This page documents an earlier version of Flux, which is no longer actively developed. Flux v0.36 is the most recent stable version of Flux.

The math.acosh() function returns the inverse hyperbolic cosine of x.

Output data type: Float

import "math"

math.acosh(x: 1.22)

// Returns 0.6517292837263385

Parameters

x

x should be greater than 1. If less than 1, the operation will return NaN.

Data type: Float

Special cases

math.acosh(x: +Inf) // Returns +Inf
math.acosh(x: <1)   // Returns NaN
math.acosh(x: NaN)  // Returns NaN