PDDBTRS
PDDBTRS
Section: LAPACK routine (version 1.5) (l) Updated: 12 May 1997 Local index
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NAME
PDDBTRS - solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)
SYNOPSIS
SUBROUTINE PDDBTRS(
TRANS, N, BWL, BWU, NRHS, A, JA, DESCA, B, IB,
DESCB, AF, LAF, WORK, LWORK, INFO )
CHARACTER
TRANS
INTEGER
BWL, BWU, IB, INFO, JA, LAF, LWORK, N, NRHS
INTEGER
DESCA( * ), DESCB( * )
DOUBLE
PRECISION A( * ), AF( * ), B( * ), WORK( * )
PURPOSE
PDDBTRS 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 PDDBTRF.
A(1:N, JA:JA+N-1) is an N-by-N real
banded diagonally dominant-like distributed
matrix with bandwidth BWL, BWU.

Routine PDDBTRF MUST be called first.

Index
NAME
SYNOPSIS
PURPOSE
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