Generate Sparse Matrices

Requires ArrayFire Pro. More...

Construct CSR-format sparse matrix from pointers
Parameters [in] row_idx Row indices in CSR format [in] col_idx Column indices in CSR format [in] values Array containing nonzero values [in] nrows Number of rows in the matrix [in] ncols Number of columns in the Matrix [in] nonzero Number of non zero elements [in] src Specify if pointers are from Host (default) or device [in] ngfor The gfor tile size (default 0) Returns sparse nrows-by-ncols array in af_csr format
AFAPI array	sparse (const int *row_idx, const int *col_idx, const float *values, int nrows, int ncols, int nonzero, af_source_t src=afHost, unsigned ngfor=0)
AFAPI array	sparse (const int *row_idx, const int *col_idx, const double *values, int nrows, int ncols, int nonzero, af_source_t src=afHost, unsigned ngfor=0)
AFAPI array	sparse (const int *row_idx, const int *col_idx, const cfloat *values, int nrows, int ncols, int nonzero, af_source_t src=afHost, unsigned ngfor=0)
AFAPI array	sparse (const int *row_idx, const int *col_idx, const cdouble *values, int nrows, int ncols, int nonzero, af_source_t src=afHost, unsigned ngfor=0)

Construct sparse matrix from Dense
Parameters [in] dense Matrix stored as dense Returns out A sparse matrix stored in CSR format
AFAPI array	sparse (array dense)

Construct sparse matrix from arrays
Parameters [in] row_idx row indices [in] col_idx column indices [in] values nonzero values [in] nrows Number of rows (default -1 uses max(row_idx) for COO, row_idx.elements()-1 for CSR) [in] ncols Number of columns (default -1 uses max(J)) [in] format sparse format (default: af_coo) Returns sparse nrows-by-ncols array
AFAPI array	sparse (array &row_idx, array &col_idx, array &values, int nrows=-1, int ncols=-1, af_sparse_t format=af_coo)

Detailed Description

Requires ArrayFire Pro.

Function Documentation

AFAPI array af::sparse	(	const int *	row_idx,
		const int *	col_idx,
		const float *	values,
		int	nrows,
		int	ncols,
		int	nonzero,
		af_source_t	src = afHost,
		unsigned	ngfor = 0
	)

AFAPI array af::sparse	(	const int *	row_idx,
		const int *	col_idx,
		const double *	values,
		int	nrows,
		int	ncols,
		int	nonzero,
		af_source_t	src = afHost,
		unsigned	ngfor = 0
	)

AFAPI array af::sparse	(	const int *	row_idx,
		const int *	col_idx,
		const cfloat *	values,
		int	nrows,
		int	ncols,
		int	nonzero,
		af_source_t	src = afHost,
		unsigned	ngfor = 0
	)

AFAPI array af::sparse	(	const int *	row_idx,
		const int *	col_idx,
		const cdouble *	values,
		int	nrows,
		int	ncols,
		int	nonzero,
		af_source_t	src = afHost,
		unsigned	ngfor = 0
	)

AFAPI array af::sparse

(

array

dense

)

AFAPI array af::sparse	(	array &	row_idx,
		array &	col_idx,
		array &	values,
		int	nrows = -1,
		int	ncols = -1,
		af_sparse_t	format = af_coo
	)