NAME¶

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

SYNOPSIS¶

SUBROUTINE PCDBSV(

N, BWL, BWU, NRHS, A, JA, DESCA, B, IB, DESCB, WORK, LWORK, INFO )

INTEGER BWL, BWU, IB, INFO, JA, LWORK, N, NRHS INTEGER DESCA( * ), DESCB( * ) COMPLEX A( * ), B( * ), WORK( * )

PURPOSE¶

PCDBSV solves a system of linear equations

where A(1:N, JA:JA+N-1) is an N-by-N complex
banded diagonally dominant-like distributed
matrix with bandwidth BWL, BWU.

Gaussian elimination without pivoting
is used to factor a reordering
of the matrix into L U.

See PCDBTRF and PCDBTRS for details.