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

NAME

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

SYNOPSIS

SUBROUTINE PCPBSV(
UPLO, N, BW, NRHS, A, JA, DESCA, B, IB, DESCB, WORK, LWORK, INFO )
CHARACTER UPLO
INTEGER BW, IB, INFO, JA, LWORK, N, NRHS
INTEGER DESCA( * ), DESCB( * )
COMPLEX A( * ), B( * ), WORK( * )

PURPOSE

PCPBSV solves a system of linear equations

where A(1:N, JA:JA+N-1) is an N-by-N complex

banded symmetric positive definite distributed

matrix with bandwidth BW.

Cholesky factorization is used to factor a reordering of

the matrix into L L'.

See PCPBTRF and PCPBTRS for details.