TESTING/MATGEN/dlakf2.f(3)

NAME
TESTING/MATGEN/dlakf2.f

SYNOPSIS

  Functions/Subroutines
subroutine dlakf2 (m, n, a, lda, b, d, e, z, ldz)
DLAKF2

Function/Subroutine Documentation

  subroutine dlakf2 (integer m, integer n, double precision, dimension( lda, * ) a, integer lda, double precision, dimension( lda, * ) b, double precision, dimension( lda, * ) d, double precision, dimension( lda, * ) e, double precision, dimension( ldz, * ) z, integer ldz)

DLAKF2

Purpose:

    !>
    !> Form the 2*M*N by 2*M*N matrix
    !>
    !>        Z = [ kron(In, A)  -kron(B', Im) ]
    !>            [ kron(In, D)  -kron(E', Im) ],
    !>
    !> where In is the identity matrix of size n and X' is the transpose
    !> of X. kron(X, Y) is the Kronecker product between the matrices X
    !> and Y.
    !>

Parameters
    M

    !>          M is INTEGER
    !>          Size of matrix, must be >= 1.
    !>

    N

    !>          N is INTEGER
    !>          Size of matrix, must be >= 1.
    !>

    A

    !>          A is DOUBLE PRECISION, dimension ( LDA, M )
    !>          The matrix A in the output matrix Z.
    !>

    LDA

    !>          LDA is INTEGER
    !>          The leading dimension of A, B, D, and E. ( LDA >= M+N )
    !>

    B

    !>          B is DOUBLE PRECISION, dimension ( LDA, N )
    !>

    D

    !>          D is DOUBLE PRECISION, dimension ( LDA, M )
    !>

    E

    !>          E is DOUBLE PRECISION, dimension ( LDA, N )
    !>
    !>          The matrices used in forming the output matrix Z.
    !>

    Z

    !>          Z is DOUBLE PRECISION, dimension ( LDZ, 2*M*N )
    !>          The resultant Kronecker M*N*2 by M*N*2 matrix (see above.)
    !>

    LDZ

    !>          LDZ is INTEGER
    !>          The leading dimension of Z. ( LDZ >= 2*M*N )
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 104 of file dlakf2.f.

Author

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