Provided by: scalapack-doc_1.5-10_all

**NAME**

PSGBTRS - solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)

**SYNOPSIS**

SUBROUTINE PSGBTRS( TRANS, N, BWL, BWU, NRHS, A, JA, DESCA, IPIV, B, IB, DESCB, AF, LAF, WORK, LWORK, INFO ) CHARACTER TRANS INTEGER BWU, BWL, IB, INFO, JA, LAF, LWORK, N, NRHS INTEGER DESCA( * ), DESCB( * ), IPIV(*) REAL A( * ), AF( * ), B( * ), WORK( * )

**PURPOSE**

PSGBTRS solves a system of linear equations or A(1:N, JA:JA+N-1)' * X = B(IB:IB+N-1, 1:NRHS) where A(1:N, JA:JA+N-1) is the matrix used to produce the factors stored in A(1:N,JA:JA+N-1) and AF by PSGBTRF. A(1:N, JA:JA+N-1) is an N-by-N real banded distributed matrix with bandwidth BWL, BWU. Routine PSGBTRF MUST be called first.