rocsolver_cungl2 Interface Reference#
hipfort_rocsolver::rocsolver_cungl2 Interface Reference
UNGL2 generates an m-by-n complex Matrix Q with orthonormal rows. More...
Public Member Functions | |
integer(kind(rocblas_status_success)) function | rocsolver_cungl2_ (handle, m, n, k, A, lda, ipiv) |
integer(kind(rocblas_status_success)) function | rocsolver_cungl2_full_rank (handle, m, n, k, A, lda, ipiv) |
integer(kind(rocblas_status_success)) function | rocsolver_cungl2_rank_0 (handle, m, n, k, A, lda, ipiv) |
integer(kind(rocblas_status_success)) function | rocsolver_cungl2_rank_1 (handle, m, n, k, A, lda, ipiv) |
Detailed Description
UNGL2 generates an m-by-n complex Matrix Q with orthonormal rows.
(This is the unblocked version of the algorithm).
The matrix Q is defined as the first m rows of the product of k Householder reflectors of order n
\[ Q = H_k^HH_{k-1}^H\cdots H_1^H \]
The 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 GELQF.
- Parameters
-
[in] handle rocblas_handle. [in] m rocblas_int. 0 <= m <= n.
The number of rows of the matrix Q.[in] n rocblas_int. n >= 0.
The number of columns of the matrix Q.[in] k rocblas_int. 0 <= k <= m.
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 GELQF, with the Householder vectors in the first k rows. 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 GELQF.
Member Function/Subroutine Documentation
◆ rocsolver_cungl2_()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungl2::rocsolver_cungl2_ | ( | 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_cungl2_full_rank()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungl2::rocsolver_cungl2_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_cungl2_rank_0()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungl2::rocsolver_cungl2_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_cungl2_rank_1()
integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cungl2::rocsolver_cungl2_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: