TESTING/LIN/zlattp.f(3)

NAME
TESTING/LIN/zlattp.f

SYNOPSIS

  Functions/Subroutines
subroutine zlattp (imat, uplo, trans, diag, iseed, n, ap, b, work, rwork, info)
ZLATTP

Function/Subroutine Documentation

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

ZLATTP

Purpose:

     ZLATTP generates a triangular test matrix in packed storage.
     IMAT and UPLO uniquely specify the properties of the test matrix,
     which is returned in the array AP.

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.

    AP

              AP is COMPLEX*16 array, dimension (N*(N+1)/2)
              The upper or lower triangular matrix A, packed columnwise in
              a linear array.  The j-th column of A is stored in the array
              AP as follows:
              if UPLO = 'U', AP((j-1)*j/2 + i) = A(i,j) for 1<=i<=j;
              if UPLO = 'L',
                 AP((j-1)*(n-j) + j*(j+1)/2 + i-j) = A(i,j) for j<=i<=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 129 of file zlattp.f.

Author

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