TESTING/LIN/dlaptm.f(3)    Library Functions Manual    TESTING/LIN/dlaptm.f(3)

NAME
       TESTING/LIN/dlaptm.f

SYNOPSIS
   Functions/Subroutines
       subroutine dlaptm (n, nrhs, alpha, d, e, x, ldx, beta, b, ldb)
           DLAPTM

Function/Subroutine Documentation
   subroutine dlaptm (integer n, integer nrhs, double precision alpha, double
       precision, dimension( * ) d, double precision, dimension( * ) e, double
       precision, dimension( ldx, * ) x, integer ldx, double precision beta,
       double precision, dimension( ldb, * ) b, integer ldb)
       DLAPTM

       Purpose:


            DLAPTM multiplies an N by NRHS matrix X by a symmetric tridiagonal
            matrix A and stores the result in a matrix B.  The operation has the
            form

               B := alpha * A * X + beta * B

            where alpha may be either 1. or -1. and beta may be 0., 1., or -1.

       Parameters
           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 1. or -1.; otherwise,
                     it is assumed to be 0.

           D

                     D is DOUBLE PRECISION array, dimension (N)
                     The n diagonal elements of the tridiagonal matrix A.

           E

                     E is DOUBLE PRECISION array, dimension (N-1)
                     The (n-1) subdiagonal or superdiagonal elements of A.

           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).

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 115 of file dlaptm.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0         TESTING/LIN/dlaptm.f(3)