Provided by: scalapack-doc_1.5-10_all
PSGBSV - solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)
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( * )
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.