.TH PSDTTRS l "12 May 1997" "LAPACK version 1.5" "LAPACK routine (version 1.5)"
.SH NAME
PSDTTRS \- solve a system of linear equations   A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)
.SH SYNOPSIS
.TP 20
SUBROUTINE PSDTTRS(
TRANS, N, NRHS, DL, D, DU, JA, DESCA, B, IB,
DESCB, AF, LAF, WORK, LWORK, INFO )
.TP 20
.ti +4
CHARACTER
TRANS
.TP 20
.ti +4
INTEGER
IB, INFO, JA, LAF, LWORK, N, NRHS
.TP 20
.ti +4
INTEGER
DESCA( * ), DESCB( * )
.TP 20
.ti +4
REAL
AF( * ), B( * ), D( * ), DL( * ), DU( * ),
WORK( * )
.SH PURPOSE
PSDTTRS solves a system of linear equations
                                  or
.br
          A(1:N, JA:JA+N-1)' * X = B(IB:IB+N-1, 1:NRHS)
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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 PSDTTRF.
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A(1:N, JA:JA+N-1) is an N-by-N real
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tridiagonal diagonally dominant-like distributed
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matrix.
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Routine PSDTTRF MUST be called first.
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