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

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

       PZPBTRS 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
       PZPBTRF.
       A(1:N, JA:JA+N-1) is an N-by-N complex
       banded symmetric positive definite distributed
       matrix with bandwidth BW.
       Depending on the value of UPLO, A stores either U or L in the equn A(1:N, JA:JA+N-1) = U'*U  or  L*L'  as
       computed by PZPBTRF.

       Routine PZPBTRF MUST be called first.

LAPACK version 1.5                                 12 May 1997                                        PZPBTRS(l)

       SUBROUTINE PZPBTRS( UPLO, N, BW, NRHS, A, JA, DESCA, B, IB, DESCB, AF, LAF, WORK, LWORK, INFO )

           CHARACTER       UPLO

           INTEGER         BW, IB, INFO, JA, LAF, LWORK, N, NRHS

           INTEGER         DESCA( * ), DESCB( * )

           COMPLEX*16      A( * ), AF( * ), B( * ), WORK( * )