LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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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
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.
[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 ZLATMS). Modified on exit. |
[in] | N | N is INTEGER The order of the matrix to be generated. |
[out] | 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. |
[out] | B | B is COMPLEX*16 array, dimension (N) The right hand side vector, if IMAT > 10. |
[out] | WORK | WORK is COMPLEX*16 array, dimension (2*N) |
[out] | RWORK | RWORK is DOUBLE PRECISION array, dimension (N) |
[out] | INFO | INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value |