.TH PZPTTRS l "12 May 1997" "LAPACK version 1.5" "LAPACK routine (version 1.5)"
.SH NAME
PZPTTRS \- 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 PZPTTRS(
UPLO, N, NRHS, D, E, JA, DESCA, B, IB, DESCB,
AF, LAF, WORK, LWORK, INFO )
.TP 20
.ti +4
CHARACTER
UPLO
.TP 20
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INTEGER
IB, INFO, JA, LAF, LWORK, N, NRHS
.TP 20
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INTEGER
DESCA( * ), DESCB( * )
.TP 20
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COMPLEX*16
AF( * ), B( * ), E( * ), WORK( * )
.TP 20
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DOUBLE
PRECISION D( * )
.SH PURPOSE
PZPTTRS 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 PZPTTRF.
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A(1:N, JA:JA+N-1) is an N-by-N complex
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tridiagonal symmetric positive definite distributed
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matrix.
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Depending on the value of UPLO, A stores either U or L in the equn
A(1:N, JA:JA+N-1) = U'D *U or L*D L' as computed by PZPTTRF.

Routine PZPTTRF MUST be called first.
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