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

NAME
       TESTING/LIN/claptm.f

SYNOPSIS
   Functions/Subroutines
       subroutine claptm (uplo, n, nrhs, alpha, d, e, x, ldx, beta, b, ldb)
           CLAPTM

Function/Subroutine Documentation
   subroutine claptm (character uplo, integer n, integer nrhs, real alpha,
       real, dimension( * ) d, complex, dimension( * ) e, complex, dimension(
       ldx, * ) x, integer ldx, real beta, complex, dimension( ldb, * ) b,
       integer ldb)
       CLAPTM

       Purpose:


            CLAPTM multiplies an N by NRHS matrix X by a Hermitian 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
           UPLO

                     UPLO is CHARACTER
                     Specifies whether the superdiagonal or the subdiagonal of the
                     tridiagonal matrix A is stored.
                     = 'U':  Upper, E is the superdiagonal of A.
                     = 'L':  Lower, E is the subdiagonal of A.

           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 REAL
                     The scalar alpha.  ALPHA must be 1. or -1.; otherwise,
                     it is assumed to be 0.

           D

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

           E

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

           X

                     X is COMPLEX 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 REAL
                     The scalar beta.  BETA must be 0., 1., or -1.; otherwise,
                     it is assumed to be 1.

           B

                     B is COMPLEX 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 127 of file claptm.f.

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

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