dbm_multiply.h File Reference

#include <stdbool.h>
#include <stdint.h>
#include "dbm_matrix.h"

Go to the source code of this file.

Functions
void	dbm_multiply (const bool transa, const bool transb, const double alpha, const dbm_matrix_t *matrix_a, const dbm_matrix_t *matrix_b, const double beta, dbm_matrix_t *matrix_c, const bool retain_sparsity, const double filter_eps, int64_t *flop)
	Performs a multiplication of two dbm_matrix_t matrices, as C := alpha * op( A ) * op( B ) + beta * C.

Function Documentation

dbm_multiply()

void dbm_multiply	(	const bool	transa,
		const bool	transb,
		const double	alpha,
		const dbm_matrix_t *	matrix_a,
		const dbm_matrix_t *	matrix_b,
		const double	beta,
		dbm_matrix_t *	matrix_c,
		const bool	retain_sparsity,
		const double	filter_eps,
		int64_t *	flop
	)

Performs a multiplication of two dbm_matrix_t matrices, as C := alpha * op( A ) * op( B ) + beta * C.

The filter_eps parameter is used to filter the resulting matrix. The filtering criterion is whether the block-frobenius norm is less than the specified epsilon. One-the-fly filtering is done such that individual multiplications are skipped if the product of the frobenius norms of the left- and right-matrix blocks are less than the specified epsilon divided by the maximum number of possible multiplies in each row. In addition a final filtering is done as well with the same epsilon value.

Author

Ole Schuett

Performs a multiplication of two dbm_matrix_t matrices, as C := alpha * op( A ) * op( B ) + beta * C.

Author

Ole Schuett

Definition at line 354 of file dbm_multiply.c.

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