DragonFly On-Line Manual Pages

PSDBTRS(l)                             )                            PSDBTRS(l)

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

SYNOPSIS
       SUBROUTINE PSDBTRS( 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( * )
           REAL A( * ), AF( * ), B( * ), WORK( * )

PURPOSE
       PSDBTRS solves a system of linear equations A(1:N, JA:JA+N-1) * X =
       B(IB:IB+N-1, 1:NRHS)                                   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 PSDBTRF.
       A(1:N, JA:JA+N-1) is an N-by-N real
       banded diagonally dominant-like distributed
       matrix with bandwidth BWL, BWU.

       Routine PSDBTRF MUST be called first.

ScaLAPACK version 1.7           13 August 2001                      PSDBTRS(l)