Jcd Jcn Jcs Jdc Jdn Jds Jelli Jnc Jnd Jns Jsc Jsd Jsn

Jsn() Function Jsn ( U As  Double, K As  Double, Optional Info As  Long  ) Jacobi elliptic functions sn(u, k) Purpose This routine computes the Jacobi elliptic functions sn(u, k). The function is defined as follows, given: u = ∫ 1/√(1 - k^2(sin(t))^2) dt [0, φ] The angle φ is called the amplitude and: sn(u, k) = sinφ Returns Double sn(u, k). Parameters [in] U Argument u. [in] K Argument k. [out] Info (Optional) = 0: Successful exit. = 1: Floating point range error. Reference boost/math/special_functions