10-30-2010
Yes, it would appear that the original installation was RHEL 5.4 beta. That does not mean that the current configuration is still using beta code as all the packages may have been updated.
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==============================================================
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#
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LEARN ABOUT REDHAT
zlagtm
ZLAGTM(l) ) ZLAGTM(l)
NAME
ZLAGTM - perform a matrix-vector product of the form B := alpha * A * X + beta * B where A is a tridiagonal matrix of order N, B and X
are N by NRHS matrices, and alpha and beta are real scalars, each of which may be 0., 1., or -1
SYNOPSIS
SUBROUTINE ZLAGTM( TRANS, N, NRHS, ALPHA, DL, D, DU, X, LDX, BETA, B, LDB )
CHARACTER TRANS
INTEGER LDB, LDX, N, NRHS
DOUBLE PRECISION ALPHA, BETA
COMPLEX*16 B( LDB, * ), D( * ), DL( * ), DU( * ), X( LDX, * )
PURPOSE
ZLAGTM performs a matrix-vector product of the form B := alpha * A * X + beta * B where A is a tridiagonal matrix of order N, B and X are N
by NRHS matrices, and alpha and beta are real scalars, each of which may be 0., 1., or -1.
ARGUMENTS
TRANS (input) CHARACTER
Specifies the operation applied to A. = 'N': No transpose, B := alpha * A * X + beta * B
= 'T': Transpose, B := alpha * A**T * X + beta * B
= 'C': Conjugate transpose, B := alpha * A**H * X + beta * B
N (input) INTEGER
The order of the matrix A. N >= 0.
NRHS (input) INTEGER
The number of right hand sides, i.e., the number of columns of the matrices X and B.
ALPHA (input) DOUBLE PRECISION
The scalar alpha. ALPHA must be 0., 1., or -1.; otherwise, it is assumed to be 0.
DL (input) COMPLEX*16 array, dimension (N-1)
The (n-1) sub-diagonal elements of T.
D (input) COMPLEX*16 array, dimension (N)
The diagonal elements of T.
DU (input) COMPLEX*16 array, dimension (N-1)
The (n-1) super-diagonal elements of T.
X (input) COMPLEX*16 array, dimension (LDX,NRHS)
The N by NRHS matrix X. LDX (input) INTEGER The leading dimension of the array X. LDX >= max(N,1).
BETA (input) DOUBLE PRECISION
The scalar beta. BETA must be 0., 1., or -1.; otherwise, it is assumed to be 1.
B (input/output) COMPLEX*16 array, dimension (LDB,NRHS)
On entry, the N by NRHS matrix B. On exit, B is overwritten by the matrix expression B := alpha * A * X + beta * B.
LDB (input) INTEGER
The leading dimension of the array B. LDB >= max(N,1).
LAPACK version 3.0 15 June 2000 ZLAGTM(l)