acosh() [6/11]

template<typename T , require_complex_bt< std::is_arithmetic, T > * = nullptr>

auto stan::math::acosh ( const T  x )

inline

Return the inverse hyperbolic cosine of the specified value.

Returns nan for nan argument.

Parameters

[in]

x

complex<Arithmetic> Argument.

Returns

Inverse hyperbolic cosine of the argument.

Exceptions

std::domain_error

If argument is less than 1.

Definition at line 49 of file acosh.hpp.