WCelli1 WCelli2 WCelli3 WElli1 WElli2 WElli3 WHlambda WJzeta WRc WRd WRf WRg WRj

WHlambda() Function WHlambda ( Phi As  Double, K As  Double  ) Heuman lambda function Λ0(φ, k) Purpose This function computes the Heuman lambda function Λ0(φ, k). Λ0(φ, k) = F(φ, √(1 - k^2))/K(√(1 - k^2)) + (2/π) K(k) Z(φ, √(1 - k^2)) where F is the incomplete elliptic integral of the first kind, K is the complete elliptic integral of the first kind, and Z is the Jacobi zeta function. Returns Heuman lambda function Λ0(φ, k). Parameters [in] Phi Argument φ. [in] K Argument k. (-1 < K < 1) Reference boost/math/special_functions