psgbsv(3)
NAME
PSGBSV - solve a system of linear equations A(1:N, JA:JA+N-1) * X =
B(IB:IB+N-1, 1:NRHS)
SYNOPSIS
SUBROUTINE PSGBSV( N, BWL, BWU, NRHS, A, JA, DESCA, IPIV, B, IB, DESCB,
WORK, LWORK, INFO )
INTEGER BWL, BWU, IB, INFO, JA, LWORK, N, NRHS
INTEGER DESCA( * ), DESCB( * ), IPIV( * )
REAL A( * ), B( * ), WORK( * )
PURPOSE
PSGBSV solves a system of linear equations
where A(1:N, JA:JA+N-1) is an N-by-N real
banded distributed
matrix with bandwidth BWL, BWU.
Gaussian elimination with pivoting
is used to factor a reordering
of the matrix into P L U.
- See PSGBTRF and PSGBTRS for details.