PSDBSV(3)     ScaLAPACK routine of NEC Numeric Library Collection    PSDBSV(3)



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

SYNOPSIS
       SUBROUTINE PSDBSV( N, BWL, BWU, NRHS, A, JA, DESCA, B, IB, DESCB, WORK,
                          LWORK, INFO )

           INTEGER        BWL, BWU, IB, INFO, JA, LWORK, N, NRHS

           INTEGER        DESCA( * ), DESCB( * )

           REAL           A( * ), B( * ), WORK( * )

PURPOSE
       PSDBSV  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 an N-by-N real
       banded diagonally dominant-like distributed
       matrix with bandwidth BWL, BWU.

       Gaussian elimination without pivoting
       is used to factor a reordering
       of the matrix into L U.

       See PSDBTRF and PSDBTRS for details.




ScaLAPACK routine               31 October 2017                      PSDBSV(3)