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PCPTSV

PCPTSV

Section: LAPACK routine (version 1.5) (l) Updated: 12 May 1997
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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.


 

Index

NAME
SYNOPSIS
PURPOSE

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