Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
#include <boost/math/special_functions/acosh.hpp>
template<class T> calculated-result-type acosh(const T x); template<class T, class Policy> calculated-result-type acosh(const T x, const Policy&);
Computes the reciprocal of (the restriction to the range of [0;+∞[)
the hyperbolic
cosine function, at x. Values returned are positive. Generalised
Taylor series are used near 1 and Laurent series are used near the infinity
to ensure accuracy.
If x is in the range ]-∞;+1[ then returns the result
of domain_error.
The return type of this function is computed using the result
type calculation rules: the return type is double when T is an integer type, and T
otherwise.
The final Policy argument is optional and can be used to control the behaviour of the function: how it handles errors, what level of precision to use etc. Refer to the policy documentation for more details.