NAME

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

SYNOPSIS

       SUBROUTINE PDPTTRS( N, NRHS, D, E, JA, DESCA, B, IB, DESCB, AF, LAF, WORK, LWORK, INFO )

           INTEGER         IB, INFO, JA, LAF, LWORK, N, NRHS

           INTEGER         DESCA( * ), DESCB( * )

           DOUBLE          PRECISION AF( * ), B( * ), D( * ), E( * ), WORK( * )

PURPOSE

       PDPTTRS solves a system of linear equations

       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 PDPTTRF.
       A(1:N, JA:JA+N-1) is an N-by-N real
       tridiagonal symmetric positive definite distributed
       matrix.

       Routine PDPTTRF MUST be called first.