atanh() [5/10]

double stan::math::atanh ( double  x )

inline

Return the inverse hyperbolic tangent of the specified value.

An argument of -1 returns negative infinity and an argument of 1 returns infinity. Returns nan for nan argument.

Parameters

[in]

x

Argument.

Returns

Inverse hyperbolic tangent of the argument.

Exceptions

std::domain_error

If argument is not in [-1, 1].

Definition at line 27 of file atanh.hpp.