Inverse hyperbolic

Detailed Description

These functions allows performing unverse hyperbolic computations

Variables
constexpr auto	eve::acosh = functor<acosh_t>
	elementwise_callable object computing $\log(x+\sqrt{x^2-1})$.
constexpr auto	eve::acoth = functor<acoth_t>
	elementwise_callable object computing the inverse hyperbolic cotangent.
constexpr auto	eve::acsch = functor<acsch_t>
	elementwise_callable object computing the inverse hyperbolic cosecant, $\log(1/x+\sqrt{1/x^2+1})$.
constexpr auto	eve::agd = functor<agd_t>
	elementwise_callable object computing the inverse gudermannian, i.e. $2\tanh(\tan(x/2))$.
constexpr auto	eve::asech = functor<asech_t>
	elementwise_callable object computing the inverse hyperbolic secant: $\log(1/x+\sqrt{1/x^2-1})$.
constexpr auto	eve::asinh = functor<asinh_t>
	elementwise_callable object computing the inverse hyperbolic sine : $\log(x+\sqrt{x^2+1})$.
constexpr auto	eve::atanh = functor<atanh_t>
	elementwise_callable object computing the inverse hyperbolic tangent.