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LAPACK
3.7.0
LAPACK: Linear Algebra PACKage
|
| subroutine clattp | ( | integer | IMAT, |
| character | UPLO, | ||
| character | TRANS, | ||
| character | DIAG, | ||
| integer, dimension( 4 ) | ISEED, | ||
| integer | N, | ||
| complex, dimension( * ) | AP, | ||
| complex, dimension( * ) | B, | ||
| complex, dimension( * ) | WORK, | ||
| real, dimension( * ) | RWORK, | ||
| integer | INFO | ||
| ) |
CLATTP
CLATTP 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.
| [in] | IMAT | IMAT is INTEGER
An integer key describing which matrix to generate for this
path. |
| [in] | UPLO | UPLO is CHARACTER*1
Specifies whether the matrix A will be upper or lower
triangular.
= 'U': Upper triangular
= 'L': Lower triangular |
| [in] | TRANS | TRANS is CHARACTER*1
Specifies whether the matrix or its transpose will be used.
= 'N': No transpose
= 'T': Transpose
= 'C': Conjugate transpose |
| [out] | DIAG | DIAG is CHARACTER*1
Specifies whether or not the matrix A is unit triangular.
= 'N': Non-unit triangular
= 'U': Unit triangular |
| [in,out] | ISEED | ISEED is INTEGER array, dimension (4)
The seed vector for the random number generator (used in
CLATMS). Modified on exit. |
| [in] | N | N is INTEGER
The order of the matrix to be generated. |
| [out] | AP | AP is COMPLEX 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. |
| [out] | B | B is COMPLEX array, dimension (N)
The right hand side vector, if IMAT > 10. |
| [out] | WORK | WORK is COMPLEX array, dimension (2*N) |
| [out] | RWORK | RWORK is REAL array, dimension (N) |
| [out] | INFO | INFO is INTEGER
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value |