rocsolver_cungqr Interface Reference#
hipfort_rocsolver::rocsolver_cungqr Interface Reference
UNGQR generates an m-by-n complex Matrix Q with orthonormal columns. More...
Public Member Functions | |
| integer(kind(rocblas_status_success)) function | rocsolver_cungqr_ (handle, m, n, k, A, lda, ipiv) |
| integer(kind(rocblas_status_success)) function | rocsolver_cungqr_full_rank (handle, m, n, k, A, lda, ipiv) |
| integer(kind(rocblas_status_success)) function | rocsolver_cungqr_rank_0 (handle, m, n, k, A, lda, ipiv) |
| integer(kind(rocblas_status_success)) function | rocsolver_cungqr_rank_1 (handle, m, n, k, A, lda, ipiv) |
Detailed Description
UNGQR generates an m-by-n complex Matrix Q with orthonormal columns.
(This is the blocked version of the algorithm).
The matrix Q is defined as the first n columns of the product of k Householder reflectors of order m
\[ Q = H_1H_2\cdots H_k \]
Householder matrices \(H_i\) are never stored, they are computed from its corresponding Householder vectors \(v_i\) and scalars \(\text{ipiv}[i]\), as returned by GEQRF.
- Parameters
-
[in] handle rocblas_handle. [in] m rocblas_int. m >= 0.
The number of rows of the matrix Q.[in] n rocblas_int. 0 <= n <= m.
The number of columns of the matrix Q.[in] k rocblas_int. 0 <= k <= n.
The number of Householder reflectors.[in,out] A pointer to type. Array on the GPU of dimension lda*n.
On entry, the matrix A as returned by GEQRF, with the Householder vectors in the first k columns. On exit, the computed matrix Q.[in] lda rocblas_int. lda >= m.
Specifies the leading dimension of A.[in] ipiv pointer to type. Array on the GPU of dimension at least k.
The Householder scalars as returned by GEQRF.
Member Function/Subroutine Documentation
◆ rocsolver_cungqr_()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungqr::rocsolver_cungqr_ | ( | type(c_ptr), value | handle, |
| integer(c_int), value | m, | ||
| integer(c_int), value | n, | ||
| integer(c_int), value | k, | ||
| type(c_ptr), value | A, | ||
| integer(c_int), value | lda, | ||
| type(c_ptr), value | ipiv | ||
| ) |
◆ rocsolver_cungqr_full_rank()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungqr::rocsolver_cungqr_full_rank | ( | type(c_ptr) | handle, |
| integer(c_int) | m, | ||
| integer(c_int) | n, | ||
| integer(c_int) | k, | ||
| complex(c_float_complex), dimension(:,:), target | A, | ||
| integer(c_int) | lda, | ||
| complex(c_float_complex), dimension(:), target | ipiv | ||
| ) |
◆ rocsolver_cungqr_rank_0()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungqr::rocsolver_cungqr_rank_0 | ( | type(c_ptr) | handle, |
| integer(c_int) | m, | ||
| integer(c_int) | n, | ||
| integer(c_int) | k, | ||
| complex(c_float_complex), target | A, | ||
| integer(c_int) | lda, | ||
| complex(c_float_complex), target | ipiv | ||
| ) |
◆ rocsolver_cungqr_rank_1()
| integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungqr::rocsolver_cungqr_rank_1 | ( | type(c_ptr) | handle, |
| integer(c_int) | m, | ||
| integer(c_int) | n, | ||
| integer(c_int) | k, | ||
| complex(c_float_complex), dimension(:), target | A, | ||
| integer(c_int) | lda, | ||
| complex(c_float_complex), dimension(:), target | ipiv | ||
| ) |
The documentation for this interface was generated from the following file: