Section: LAPACK routine (version 1.5) (l)Updated: 12 May 1997Local indexUp
PCPTTRS - solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS)
UPLO, N, NRHS, D, E, JA, DESCA, B, IB, DESCB,
AF, LAF, WORK, LWORK, INFO )
IB, INFO, JA, LAF, LWORK, N, NRHS
DESCA( * ), DESCB( * )
AF( * ), B( * ), E( * ), WORK( * )
D( * )
PCPTTRS solves a system of linear equations
where A(1:N, JA:JA+N-1) is the matrix used to produce the factors
stored in A(1:N,JA:JA+N-1) and AF by PCPTTRF.
A(1:N, JA:JA+N-1) is an N-by-N complex
tridiagonal symmetric positive definite distributed
Depending on the value of UPLO, A stores either U or L in the equn
A(1:N, JA:JA+N-1) = U'D *U or L*D L' as computed by PCPTTRF.