!>
!> DLATTP 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.
!> 

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 (= 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
!>          DLATMS).  Modified on exit.
!> 

N

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

A

!>          A is DOUBLE PRECISION 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 DOUBLE PRECISION array, dimension (N)
!>          The right hand side vector, if IMAT > 10.
!> 

WORK

!>          WORK is DOUBLE PRECISION array, dimension (3*N)
!> 

INFO

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

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