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hxgxtu

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[求助] FORTRAN 库函数带状矩阵求解线性方程

有哪位虫友对fortran中调用库函数求解带状线性方程的友友们发表下看法：复带状矩阵调用函数命令：CALL LSACB (N, A, LDA, NLCA, NUCA, B, IPATH, X)
里面的NLCA和NUCA分别表示什么意思？还有A—Complex NLCA + NUCA + 1 by N array containing the N by N banded coefficient matrix in band storage mode 啥意思呢？
库函数说明是这样的：
Arguments
N — Number of equations. (Input)
A — Complex NLCA + NUCA + 1 by N array containing the N by N banded
coefficient matrix in band storage mode. (Input)
LDA — Leading dimension of A exactly as specified in the dimension statement
of the calling program. (Input)
NLCA — Number of lower codiagonals of A. (Input)
NUCA — Number of upper codiagonals of A. (Input)
B — Complex vector of length N containing the right-hand side of the linear
system. (Input)
IPATH — Path indicator. (Input)
IPATH = 1 means the system AX = B is solved.
IPATH = 2 means the system A+X = B is solved.
X — Complex vector of length N containing the solution to the linear system.
俺英语不好，看不懂哎
经过自己的努力，搞定，呵呵，不送分了

[ Last edited by hxgxtu on 2011-12-20 at 13:14 ]

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