jcd jcn jcs jdc jdn jds jelli jnc jnd jns jsc jsd jsn jtheta1 jtheta1t jtheta2 jtheta2t jtheta3 jtheta3m1 jtheta3m1t jtheta3t jtheta4 jtheta4m1 jtheta4m1t jtheta4t

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