Section: LAPACK routine (version 1.5) (l) Updated: 12 May 1997 Local index
PDGBTRS - solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)
- SUBROUTINE PDGBTRS(
TRANS, N, BWL, BWU, NRHS, A, JA, DESCA, IPIV,
B, IB, DESCB, AF, LAF, WORK, LWORK, INFO )
BWU, BWL, IB, INFO, JA, LAF, LWORK, N, NRHS
DESCA( * ), DESCB( * ), IPIV(*)
PRECISION A( * ), AF( * ), B( * ), WORK( * )
PDGBTRS solves a system of linear equations
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 PDGBTRF.
A(1:N, JA:JA+N-1) is an N-by-N real
matrix with bandwidth BWL, BWU.
Routine PDGBTRF MUST be called first.
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Time: 21:52:12 GMT, April 16, 2011