DragonFly On-Line Manual Pages

PSPTTRS(l)                             )                            PSPTTRS(l)

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

SYNOPSIS
       SUBROUTINE PSPTTRS( 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( * )
           REAL AF( * ), B( * ), D( * ), E( * ), WORK( * )

PURPOSE
       PSPTTRS 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 the matrix used to
       produce the factors stored in A(1:N,JA:JA+N-1) and AF by PSPTTRF.
       A(1:N, JA:JA+N-1) is an N-by-N real
       tridiagonal symmetric positive definite distributed
       matrix.

       Routine PSPTTRF MUST be called first.

ScaLAPACK version 1.7           13 August 2001                      PSPTTRS(l)