# Function libm::acosh [−][src]

pub fn acosh(x: f64) -> f64

Inverse hyperbolic cosine (f64)

Calculates the inverse hyperbolic cosine of `x`

.
Is defined as `log(x + sqrt(x*x-1))`

.
`x`

must be a number greater than or equal to 1.

pub fn acosh(x: f64) -> f64

Inverse hyperbolic cosine (f64)

Calculates the inverse hyperbolic cosine of `x`

.
Is defined as `log(x + sqrt(x*x-1))`

.
`x`

must be a number greater than or equal to 1.