Banfac Banslv Bint4 Bintk Bspldr Bsplev Bsplpp Bsplvd Bsplvn Bvalue Interv Ppvalu

Banslv() Sub Banslv ( N As  Long, Kl As  Long, Ku As  Long, Ab() As  Double, B() As  Double, Info As  Long  ) Solution of LU factorized system of linear equations (support routine for Bint4 and Bintk) Purpose This routine computes the solution x of the linear system Ax = b in place of b, given the LU factorization of A from Banfac. Banslv is used to compute the B-spline coefficients by solving the system of linear equations. Banfac and Banslv are the support routines for Bint4 and Bintk. Parameters [in] N Number of linear equations, i.e., order of the matrix A. (N >= 1) [in] Kl Number of sub-diagonals within the band of A. (Kl >= 0) [in] Ku Number of super-diagonals within the band of A. (Ku >= 0) [in] Ab() Array Ab(LAb1 - 1, LAb2 - 1) (LAb1 >= Kl + Ku + 1, LAb2 >= N) (2D array) or Ab(LAb - 1) (LAb >= (Kl + Ku + 1)*N) (1D array) The LU factorized banded coefficient matrix of the linear system by Banfac. [in,out] B() Array B(LB - 1) (LB >= N) [in] Right side of the system to be solved. [out] Solution vector. [out] Info = 0: Successful exit. = -1: The argument N had an illegal value. (N < 1) = -2: The argument Kl had an illegal value. (Kl < 0) = -3: The argument Ku had an illegal value. (Ku < 0) = -4: The argument Ab() is incalid. = -5: The argument B() is incalid. Reference SLATEC