.TH PSDTSV l "12 May 1997" "LAPACK version 1.5" "LAPACK routine (version 1.5)" .SH NAME PSDTSV \- solve a system of linear equations A(1:N, JA:JA+N-1) * X = B(IB:IB+N-1, 1:NRHS) .SH SYNOPSIS .TP 19 SUBROUTINE PSDTSV( N, NRHS, DL, D, DU, JA, DESCA, B, IB, DESCB, WORK, LWORK, INFO ) .TP 19 .ti +4 INTEGER IB, INFO, JA, LWORK, N, NRHS .TP 19 .ti +4 INTEGER DESCA( * ), DESCB( * ) .TP 19 .ti +4 REAL B( * ), D( * ), DL( * ), DU( * ), WORK( * ) .SH PURPOSE PSDTSV solves a system of linear equations where A(1:N, JA:JA+N-1) is an N-by-N real .br tridiagonal diagonally dominant-like distributed .br matrix. .br Gaussian elimination without pivoting .br is used to factor a reordering .br of the matrix into L U. .br See PSDTTRF and PSDTTRS for details. .br