TESTING/LIN/zlattr.f(3)

NAME
TESTING/LIN/zlattr.f

SYNOPSIS

  Functions/Subroutines
subroutine zlattr (imat, uplo, trans, diag, iseed, n, a, lda, b, work, rwork, info)
ZLATTR

Function/Subroutine Documentation

  subroutine zlattr (integer imat, character uplo, character trans, character diag, integer, dimension( 4 ) iseed, integer n, complex*16, dimension( lda, * ) a, integer lda, complex*16, dimension( * ) b, complex*16, dimension( * ) work, double precision, dimension( * ) rwork, integer info)

ZLATTR

Purpose:

    !>
    !> ZLATTR generates a triangular test matrix in 2-dimensional storage.
    !> IMAT and UPLO uniquely specify the properties of the test matrix,
    !> which is returned in the array A.
    !>

Parameters
    IMAT

    !>          IMAT is INTEGER
    !>          An integer key describing which matrix to generate for this
    !>          path.
    !>

    UPLO

    !>          UPLO is CHARACTER*1
    !>          Specifies whether the matrix A will be upper or lower
    !>          triangular.
    !>          = 'U':  Upper triangular
    !>          = 'L':  Lower triangular
    !>

    TRANS

    !>          TRANS is CHARACTER*1
    !>          Specifies whether the matrix or its transpose will be used.
    !>          = 'N':  No transpose
    !>          = 'T':  Transpose
    !>          = 'C':  Conjugate transpose
    !>

    DIAG

    !>          DIAG is CHARACTER*1
    !>          Specifies whether or not the matrix A is unit triangular.
    !>          = 'N':  Non-unit triangular
    !>          = 'U':  Unit triangular
    !>

    ISEED

    !>          ISEED is INTEGER array, dimension (4)
    !>          The seed vector for the random number generator (used in
    !>          ZLATMS).  Modified on exit.
    !>

    N

    !>          N is INTEGER
    !>          The order of the matrix to be generated.
    !>

    A

    !>          A is COMPLEX*16 array, dimension (LDA,N)
    !>          The triangular matrix A.  If UPLO = 'U', the leading N x N
    !>          upper triangular part of the array A contains the upper
    !>          triangular matrix, and the strictly lower triangular part of
    !>          A is not referenced.  If UPLO = 'L', the leading N x N lower
    !>          triangular part of the array A contains the lower triangular
    !>          matrix and the strictly upper triangular part of A is not
    !>          referenced.
    !>

    LDA

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

    B

    !>          B is COMPLEX*16 array, dimension (N)
    !>          The right hand side vector, if IMAT > 10.
    !>

    WORK

    !>          WORK is COMPLEX*16 array, dimension (2*N)
    !>

    RWORK

    !>          RWORK is DOUBLE PRECISION array, dimension (N)
    !>

    INFO

    !>          INFO is INTEGER
    !>          = 0:  successful exit
    !>          < 0:  if INFO = -i, the i-th argument had an illegal value
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 136 of file zlattr.f.

Author

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