Quick Navigator

 Search Site Miscellaneous Server Agreement Year 2038 Credits

Manual Reference Pages  -  PCPTTRSV (l)

NAME

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

Synopsis
Purpose

SYNOPSIS

 SUBROUTINE PCPTTRSV( UPLO, TRANS, N, NRHS, D, E, JA, DESCA, B, IB, DESCB, AF, LAF, WORK, LWORK, INFO ) CHARACTER TRANS, UPLO INTEGER IB, INFO, JA, LAF, LWORK, N, NRHS INTEGER DESCA( * ), DESCB( * ) COMPLEX AF( * ), B( * ), E( * ), WORK( * ) REAL D( * )

PURPOSE

PCPTTRSV solves a tridiagonal triangular system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS) or
A(1:N, JA:JA+N-1)^H * X = B(IB:IB+N-1, 1:NRHS)

where A(1:N, JA:JA+N-1) is a tridiagonal
triangular matrix factor produced by the
Cholesky factorization code PCPTTRF
and is stored in A(1:N,JA:JA+N-1) and AF.
The matrix stored in A(1:N, JA:JA+N-1) is either
upper or lower triangular according to UPLO,
and the choice of solving A(1:N, JA:JA+N-1) or A(1:N, JA:JA+N-1)^H is dictated by the user by the parameter TRANS.

Routine PCPTTRF MUST be called first.

Search for    or go to Top of page |  Section l |  Main Index

 ScaLAPACK version 1.7 PCPTTRSV (l) 13 August 2001

Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.