!>
!> DLAGTM performs a matrix-matrix 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.
!> 

TRANS

!>          TRANS is CHARACTER*1
!>          Specifies the operation applied to A.
!>          = 'N':  No transpose, B := alpha * A * X + beta * B
!>          = 'T':  Transpose,    B := alpha * A'* X + beta * B
!>          = 'C':  Conjugate transpose = Transpose
!> 

N

!>          N is INTEGER
!>          The order of the matrix A.  N >= 0.
!> 

NRHS

!>          NRHS is INTEGER
!>          The number of right hand sides, i.e., the number of columns
!>          of the matrices X and B.
!> 

ALPHA

!>          ALPHA is DOUBLE PRECISION
!>          The scalar alpha.  ALPHA must be 0., 1., or -1.; otherwise,
!>          it is assumed to be 0.
!> 

DL

!>          DL is DOUBLE PRECISION array, dimension (N-1)
!>          The (n-1) sub-diagonal elements of T.
!> 

D

!>          D is DOUBLE PRECISION array, dimension (N)
!>          The diagonal elements of T.
!> 

DU

!>          DU is DOUBLE PRECISION array, dimension (N-1)
!>          The (n-1) super-diagonal elements of T.
!> 

X

!>          X is DOUBLE PRECISION array, dimension (LDX,NRHS)
!>          The N by NRHS matrix X.
!> 

LDX

!>          LDX is INTEGER
!>          The leading dimension of the array X.  LDX >= max(N,1).
!> 

BETA

!>          BETA is DOUBLE PRECISION
!>          The scalar beta.  BETA must be 0., 1., or -1.; otherwise,
!>          it is assumed to be 1.
!> 

B

!>          B is DOUBLE PRECISION 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

!>          LDB is INTEGER
!>          The leading dimension of the array B.  LDB >= max(N,1).
!> 

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