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

NAME

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

SYNOPSIS

SUBROUTINE PDPTSV(
N, NRHS, D, E, JA, DESCA, B, IB, DESCB, WORK, LWORK, INFO )
INTEGER IB, INFO, JA, LWORK, N, NRHS
INTEGER DESCA( * ), DESCB( * )
DOUBLE PRECISION B( * ), D( * ), E( * ), WORK( * )

PURPOSE

PDPTSV solves a system of linear equations

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

tridiagonal symmetric positive definite distributed

matrix.

Cholesky factorization is used to factor a reordering of

the matrix into L L'.

See PDPTTRF and PDPTTRS for details.