rocsolver_slarf Interface Reference

• hipfort_rocsolver
• rocsolver_slarf

Public Member Functions | List of all members

hipfort_rocsolver::rocsolver_slarf Interface Reference

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Public Member Functions
integer(kind(rocblas_status_success)) function	rocsolver_slarf_full_rank (handle, side, m, n, x, incx, alpha, A, lda)
integer(kind(rocblas_status_success)) function	rocsolver_slarf_orig (handle, side, m, n, x, incx, alpha, A, lda)
integer(kind(rocblas_status_success)) function	rocsolver_slarf_rank_0 (handle, side, m, n, x, incx, alpha, A, lda)
integer(kind(rocblas_status_success)) function	rocsolver_slarf_rank_1 (handle, side, m, n, x, incx, alpha, A, lda)

Detailed Description

!

LARF applies a Householder reflector H to a general matrix A.

The Householder reflector H, of order m (or n), is to be applied to a m-by-n matrix A from the left (or the right). H is given by

H = I - alpha  x  x'

where alpha is a scalar and x a Householder vector. H is never actually computed.

Parameters

[in]	handle	rocblas_handle.
[in]	side	rocblas_side. If side = rocblas_side_left, then compute HA If side = rocblas_side_right, then compute AH
[in]	m	rocblas_int. m >= 0. Number of rows of A.
[in]	n	rocblas_int. n >= 0. Number of columns of A.
[in]	x	pointer to type. Array on the GPU of size at least (1 + (m-1)abs(incx)) if left side, or at least (1 + (n-1)abs(incx)) if right side. The Householder vector x.
[in]	incx	rocblas_int. incx != 0. Increment between to consecutive elements of x. If incx < 0, the elements of x are used in reverse order.
[in]	alpha	pointer to type. A scalar on the GPU. If alpha = 0, then H = I (A will remain the same, x is never used)
[in,out]	A	pointer to type. Array on the GPU of size ldan. On input, the matrix A. On output it is overwritten with HA (or AH).
[in]	lda	rocblas_int. lda >= m. Leading dimension of A.

Member Function/Subroutine Documentation

◆ rocsolver_slarf_full_rank()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_slarf::rocsolver_slarf_full_rank	(	type(c_ptr), value	handle,
		integer(kind(rocblas_side_left)), value	side,
		integer(c_int), value	m,
		integer(c_int), value	n,
		real(c_float), dimension(:), target	x,
		integer(c_int), value	incx,
		real(c_float)	alpha,
		real(c_float), dimension(:,:), target	A,
		integer(c_int), value	lda
	)

◆ rocsolver_slarf_orig()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_slarf::rocsolver_slarf_orig	(	type(c_ptr), value	handle,
		integer(kind(rocblas_side_left)), value	side,
		integer(c_int), value	m,
		integer(c_int), value	n,
		type(c_ptr), value	x,
		integer(c_int), value	incx,
		real(c_float)	alpha,
		type(c_ptr), value	A,
		integer(c_int), value	lda
	)

◆ rocsolver_slarf_rank_0()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_slarf::rocsolver_slarf_rank_0	(	type(c_ptr), value	handle,
		integer(kind(rocblas_side_left)), value	side,
		integer(c_int), value	m,
		integer(c_int), value	n,
		real(c_float), target	x,
		integer(c_int), value	incx,
		real(c_float)	alpha,
		real(c_float), target	A,
		integer(c_int), value	lda
	)

◆ rocsolver_slarf_rank_1()

integer(kind(rocblas_status_success)) function hipfort_rocsolver::rocsolver_slarf::rocsolver_slarf_rank_1	(	type(c_ptr), value	handle,
		integer(kind(rocblas_side_left)), value	side,
		integer(c_int), value	m,
		integer(c_int), value	n,
		real(c_float), dimension(:), target	x,
		integer(c_int), value	incx,
		real(c_float)	alpha,
		real(c_float), dimension(:), target	A,
		integer(c_int), value	lda
	)

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

• hipfort_rocsolver.f