B given as Bᵀ: row-major, n × k, its rows ldb apart (C = A·Bᵀᵀ, no copy of the transpose). More...

#include <gemm.hpp>

Static Public Member Functions
template<std::size_t Nr, typename T >
static void	pack (const T bt, std::size_t ldbt, std::size_t p0, std::size_t j0, std::size_t kc, std::size_t cols, T out)
	The `kc × cols` block of B from row `p0` and column `j0` (Bᵀ's rows from `j0`, its columns from `p0`) into slivers of `Nr` columns.

template<typename Kernel >
static constexpr bool	in_place (std::size_t) noexcept
	Never in place: a sliver's columns lie apart.

template<typename T >
static const T *	rows_of (const T *x, std::size_t ld, std::size_t rows, std::size_t cols, buffer< T > &scratch, std::size_t &ld_out)
	The `rows × cols` operand row-major for the plain loop, copied from its transpose `x` (`ld` apart) into `scratch`.

template<typename T >
static const T &	at (const T *bt, std::size_t ldbt, std::size_t p, std::size_t j) noexcept
	B's element in row `p` and column `j:` `Bᵀ`'s in row `j` and column `p`.

Detailed Description

B given as Bᵀ: row-major, n × k, its rows ldb apart (C = A·Bᵀᵀ, no copy of the transpose).

Definition at line 828 of file gemm.hpp.

Member Function Documentation

template<typename T >

static const T & numerical::detail::b_transposed::at	(	const T *	bt,
		std::size_t	ldbt,
		std::size_t	p,
		std::size_t	j
	)

inlinestaticnoexcept

B's element in row p and column j: Bᵀ's in row j and column p.

Definition at line 867 of file gemm.hpp.

static constexpr bool numerical::detail::b_transposed::in_place ( std::size_t )

inlinestaticconstexprnoexcept

Never in place: a sliver's columns lie apart.

Definition at line 847 of file gemm.hpp.

template<std::size_t Nr, typename T >

static void numerical::detail::b_transposed::pack	(	const T *	bt,
		std::size_t	ldbt,
		std::size_t	p0,
		std::size_t	j0,
		std::size_t	kc,
		std::size_t	cols,
		T *	out
	)

inlinestatic

The kc × cols block of B from row p0 and column j0 (Bᵀ's rows from j0, its columns from p0) into slivers of Nr columns.

Definition at line 834 of file gemm.hpp.

template<typename T >

static const T * numerical::detail::b_transposed::rows_of	(	const T *	x,
		std::size_t	ld,
		std::size_t	rows,
		std::size_t	cols,
		buffer< T > &	scratch,
		std::size_t &	ld_out
	)

inlinestatic

The rows × cols operand row-major for the plain loop, copied from its transpose x (ld apart) into scratch.

Definition at line 855 of file gemm.hpp.

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