Alaguerre Alaguerre_sub Alegendre Alegendre_sub Chebs Chebt Chebt_sub Chebtd Chebtd_sub Chebu Chebu_sub Gegenbauer Gegenbauer_sub Gegenbauerd Gegenbauerd1 Gegenbauerd1_sub Gegenbauerd_sub Hermite Hermite_sub Jacobi Jacobi_sub Jacobid Jacobid1 Jacobid1_sub Jacobid2 Jacobid2_sub Jacobid_sub Laguerre Laguerre_sub Legendre Legendre_sub Legendred Legendred_sub Sharmonic Sharmonici Sharmonici_sub Sharmonicr Sharmonicr_sub

Legendre_sub() Sub Legendre_sub ( Ret As  Double, N As  Long, X As  Double, Optional Info As  Long  ) Legendre polynomial Pn(x) (Subroutine version) Purpose Computes the Legendre polynomial. Pn(x) = 1/(2^n n!) dn/dxn(x^2 - 1)^n Parameters [out] Ret Legendre polynomial Pn(x). [in] N Argument n. (0 <= N < 128) [in] X Argument x (|X| <= 1). [out] Info (Optional) = 0: Successful exit. = -1: The argument N had an illegal value. (N < 0, N >= 128) = -2: The argument X had an illegal value. (|X| > 1) = 1: Floating point range error. Reference boost/math/special_functions