Synopsis

#include <boost/math/special_functions/jacobi_elliptic.hpp>

namespace boost { namespace math {

 template <class T, class U>
 calculated-result-type jacobi_cs(T k, U u);

 template <class T, class U, class Policy>
 calculated-result-type jacobi_cs(T k, U u, const Policy& pol);

}} // namespaces

Description

This function returns the Jacobi elliptic function cs.

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.

This function is a trivial wrapper around jacobi_elliptic, with:

cs(u, k) = cn(u, k) / sn(u, k)