DragonFly On-Line Manual Pages

PDDTTRS(l)                             )                            PDDTTRS(l)

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

SYNOPSIS
       SUBROUTINE PDDTTRS( TRANS, N, NRHS, DL, D, DU, JA, DESCA, B, IB, DESCB,
                           AF, LAF, WORK, LWORK, INFO )
           CHARACTER TRANS
           INTEGER IB, INFO, JA, LAF, LWORK, N, NRHS
           INTEGER DESCA( * ), DESCB( * )
           DOUBLE PRECISION AF( * ), B( * ), D( * ), DL( * ), DU( * ), WORK( *
       )

PURPOSE
       PDDTTRS 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 PDDTTRF.
       A(1:N, JA:JA+N-1) is an N-by-N real
       tridiagonal diagonally dominant-like distributed
       matrix.

       Routine PDDTTRF MUST be called first.

ScaLAPACK version 1.7           13 August 2001                      PDDTTRS(l)