debian man page for psdttrsv

PSDTTRSV(l)						   LAPACK routine (version 1.5) 					       PSDTTRSV(l)

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

SYNOPSIS
       SUBROUTINE PSDTTRSV( UPLO, TRANS, N, NRHS, DL, D, DU, JA, DESCA, B, IB, DESCB, AF, LAF, WORK, LWORK, INFO )

	   CHARACTER	    TRANS, UPLO

	   INTEGER	    IB, INFO, JA, LAF, LWORK, N, NRHS

	   INTEGER	    DESCA( * ), DESCB( * )

	   REAL 	    AF( * ), B( * ), D( * ), DL( * ), DU( * ), WORK( * )

PURPOSE
       PSDTTRSV solves a tridiagonal triangular system of linear equations
				      or
			   A(1:N, JA:JA+N-1)^T * 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
       Gaussian elimination code PS@(dom_pre)TTRF
       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)^T is dictated by the user by the parameter TRANS.

       Routine PSDTTRF MUST be called first.

LAPACK version 1.5						    12 May 1997 						       PSDTTRSV(l)