mlqmn.f90

来自「数值计算和数值分析在Fortran下的特殊函数库,是数值计算的必备」· F90 代码 · 共 23 行

MODULE lqmn_func
 
! From the book "Computation of Special Functions"
!      by Shanjie Zhang and Jianming Jin
!   Copyright 1996 by John Wiley & Sons, Inc.
! The authors state:
!   "However, we give permission to the reader who purchases this book
!    to incorporate any of these programs into his or her programs
!    provided that the copyright is acknowledged."
 
IMPLICIT NONE
INTEGER, PARAMETER  :: dp = SELECTED_REAL_KIND(12, 60)
 
CONTAINS
 

SUBROUTINE lqmn(mm, m, n, x, qm, qd)

!    ==========================================================
!    Purpose: Compute the associated Legendre functions of the
!             second kind, Qmn(x) and Qmn'(x)
!    Input :  x  --- Argument of Qmn(x)
!             m  --- Order of Qmn(x)  ( m = 0,1,2,