pdgbtrs3
Solve a system of linear equations a(1:n, ja:ja+n-1) * x = b(ib:ib+n-1, 1:nrhs)
Purpose
PDGBTRS solves a system of linear equations
or
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 PDGBTRF.
A(1:N, JA:JA+N-1) is an N-by-N real
banded distributed
matrix with bandwidth BWL, BWU.
Routine PDGBTRF MUST be called first.