rocsolver_cunmqr Interface Reference

• hipfort_rocsolver
• rocsolver_cunmqr

Public Member Functions | List of all members

hipfort_rocsolver::rocsolver_cunmqr Interface Reference

UNMQR multiplies a complex matrix Q with orthonormal columns by a general m-by-n matrix C. More...

Public Member Functions
integer(kind(rocblas_status_success)) function	rocsolver_cunmqr_ (handle, side, trans, m, n, k, A, lda, ipiv, C, ldc)
integer(kind(rocblas_status_success)) function	rocsolver_cunmqr_full_rank (handle, side, trans, m, n, k, A, lda, ipiv, C, ldc)
integer(kind(rocblas_status_success)) function	rocsolver_cunmqr_rank_0 (handle, side, trans, m, n, k, A, lda, ipiv, C, ldc)
integer(kind(rocblas_status_success)) function	rocsolver_cunmqr_rank_1 (handle, side, trans, m, n, k, A, lda, ipiv, C, ldc)

Detailed Description

UNMQR multiplies a complex matrix Q with orthonormal columns by a general m-by-n matrix C.

(This is the blocked version of the algorithm).

The matrix Q is applied in one of the following forms, depending on the values of side and trans:

\[ \begin{array}{cl} QC & \: \text{No transpose from the left,}\newline Q^HC & \: \text{Conjugate transpose from the left,}\newline CQ & \: \text{No transpose from the right, and}\newline CQ^H & \: \text{Conjugate transpose from the right.} \end{array} \]

Q is defined as the product of k Householder reflectors

\[ Q = H_1H_2\cdots H_k \]

of order m if applying from the left, or n if applying from the right. Q is never stored, it is calculated from the Householder vectors and scalars returned by the QR factorization GEQRF.

Parameters

[in]	handle	rocblas_handle.
[in]	side	rocblas_side. Specifies from which side to apply Q.
[in]	trans	rocblas_operation. Specifies whether the matrix Q or its conjugate transpose is to be applied.
[in]	m	rocblas_int. m >= 0. Number of rows of matrix C.
[in]	n	rocblas_int. n >= 0. Number of columns of matrix C.
[in]	k	rocblas_int. k >= 0; k <= m if side is left, k <= n if side is right. The number of Householder reflectors that form Q.
[in]	A	pointer to type. Array on the GPU of size lda*k. The Householder vectors as returned by GEQRF in the first k columns of its argument A.
[in]	lda	rocblas_int. lda >= m if side is left, or lda >= n if side is right. 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.
[in,out]	C	pointer to type. Array on the GPU of size ldc*n. On entry, the matrix C. On exit, it is overwritten with Q*C, C*Q, Q'*C, or C*Q'.
[in]	ldc	rocblas_int. ldc >= m. Leading dimension of C.

Member Function/Subroutine Documentation

◆ rocsolver_cunmqr_()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cunmqr::rocsolver_cunmqr_	(	type(c_ptr), value	handle,
		integer(kind(rocblas_side_left)), value	side,
		integer(kind(rocblas_operation_none)), value	trans,
		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,
		type(c_ptr), value	C,
		integer(c_int), value	ldc
	)

◆ rocsolver_cunmqr_full_rank()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cunmqr::rocsolver_cunmqr_full_rank	(	type(c_ptr)	handle,
		integer(kind(rocblas_side_left))	side,
		integer(kind(rocblas_operation_none))	trans,
		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,
		complex(c_float_complex), dimension(:,:), target	C,
		integer(c_int)	ldc
	)

◆ rocsolver_cunmqr_rank_0()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cunmqr::rocsolver_cunmqr_rank_0	(	type(c_ptr)	handle,
		integer(kind(rocblas_side_left))	side,
		integer(kind(rocblas_operation_none))	trans,
		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,
		complex(c_float_complex), target	C,
		integer(c_int)	ldc
	)

◆ rocsolver_cunmqr_rank_1()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_cunmqr::rocsolver_cunmqr_rank_1	(	type(c_ptr)	handle,
		integer(kind(rocblas_side_left))	side,
		integer(kind(rocblas_operation_none))	trans,
		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,
		complex(c_float_complex), dimension(:), target	C,
		integer(c_int)	ldc
	)

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The documentation for this interface was generated from the following file:

• hipfort_rocsolver.f