NAME¶

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

SYNOPSIS¶

SUBROUTINE PCPTSV(

UPLO, N, NRHS, D, E, JA, DESCA, B, IB, DESCB, WORK, LWORK, INFO )

CHARACTER

UPLO

INTEGER

IB, INFO, JA, LWORK, N, NRHS

INTEGER

DESCA( * ), DESCB( * )

COMPLEX

B( * ), E( * ), WORK( * )

REAL

D( * )

PURPOSE¶

PCPTSV solves a system of linear equations where A(1:N, JA:JA+N-1) is an N-by-N complex tridiagonal symmetric positive definite distributed matrix. Cholesky factorization is used to factor a reordering of the matrix into L L'. See PCPTTRF and PCPTTRS for details.