LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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dlakf2.f File Reference

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Functions/Subroutines

subroutine dlakf2 (M, N, A, LDA, B, D, E, Z, LDZ)
 DLAKF2 More...
 

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
[in]M
          M is INTEGER
          Size of matrix, must be >= 1.
[in]N
          N is INTEGER
          Size of matrix, must be >= 1.
[in]A
          A is DOUBLE PRECISION, dimension ( LDA, M )
          The matrix A in the output matrix Z.
[in]LDA
          LDA is INTEGER
          The leading dimension of A, B, D, and E. ( LDA >= M+N )
[in]B
          B is DOUBLE PRECISION, dimension ( LDA, N )
[in]D
          D is DOUBLE PRECISION, dimension ( LDA, M )
[in]E
          E is DOUBLE PRECISION, dimension ( LDA, N )

          The matrices used in forming the output matrix Z.
[out]Z
          Z is DOUBLE PRECISION, dimension ( LDZ, 2*M*N )
          The resultant Kronecker M*N*2 by M*N*2 matrix (see above.)
[in]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.
Date
November 2011

Definition at line 106 of file dlakf2.f.

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