NAME¶
PCGBSV - solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1,
1:NRHS)
SYNOPSIS¶
- SUBROUTINE PCGBSV(
- N, BWL, BWU, NRHS, A, JA, DESCA, IPIV, B, IB, DESCB, WORK, LWORK, INFO
)
INTEGER BWL, BWU, IB, INFO, JA, LWORK, N, NRHS INTEGER DESCA( * ), DESCB( * ),
IPIV( * ) COMPLEX A( * ), B( * ), WORK( * )
PURPOSE¶
PCGBSV solves a system of linear equations
where A(1:N, JA:JA+N-1) is an N-by-N complex
banded distributed
matrix with bandwidth BWL, BWU.
Gaussian elimination with pivoting
is used to factor a reordering
of the matrix into P L U.
See PCGBTRF and PCGBTRS for details.