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Man Pages


Manual Reference Pages  -  PDPTTRS (l)

NAME

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

CONTENTS

Synopsis
Purpose

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 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 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.

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ScaLAPACK version 1.7 PDPTTRS (l) 13 August 2001

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