acosh() [5/11]

template<typename T , require_arithmetic_t< T > * = nullptr>

double stan::math::acosh ( const T  x )

inline

Return the inverse hyperbolic cosine of the specified value.

Returns nan for nan argument.

Parameters

[in]

x

Arithmetic Argument.

Returns

Inverse hyperbolic cosine of the argument.

Exceptions

std::domain_error

If argument is less than 1.

Definition at line 27 of file acosh.hpp.