_jcd _jcn _jcs _jdc _jdn _jds _jelli _jnc _jnd _jns _jsc _jsd _jsn

_jcd() double _jcd ( double  u, double  k  ) Jacobi elliptic functions cd(u, k) Purpose jcd computes the Jacobi elliptic functions cd(u, k). The function is defined as follows: cd(u, k) = cn(u, k) / dn(u, k) Returns cd(u, k). Parameters [in] u Argument u. [in] k Argument k. Error handling Range error (ERANGE) may occur. Reference boost/math/special_functions