The C++ interface for where. More...

One Dimension

Find non-zero values in a vector.

Return linear indices (zero- or one-based).

Parameters

[out]	n_out	Number of non-zeros returned in `d_indices`
[out]	d_indices	Linear indices (if `is_baseone` true then one-based, else zero-based)
[in]	n_in	Number of total elements in `d_X`
[in]	d_X	Input vector
[in]	is_baseone	Is indexed output one-based? If true, one-based indexing; else, zero-based. Default: false.

afError af_where_BS (unsigned *n_out, float **d_indices, unsigned n_in, const bool *d_X, bool is_baseone=false)

Boolean (8-bit) find, single-precision indexing. More...

afError af_where_BD (unsigned *n_out, double **d_indices, unsigned n_in, const bool *d_X, bool is_baseone=false)

Boolean (8-bit) find, double-precision indexing. More...

afError af_where_BU (unsigned *n_out, unsigned **d_indices, unsigned n_in, const bool *d_X, bool is_baseone=false)

Boolean (8-bit) find, integer indexing. More...

afError af_where_SS (unsigned *n_out, float **d_indices, unsigned n_in, const float *d_X, bool is_baseone=false)

Single-precision find, single-precision indexing. More...

afError af_where_SD (unsigned *n_out, double **d_indices, unsigned n_in, const float *d_X, bool is_baseone=false)

Single-precision find, double-precision indexing. More...

afError af_where_DD (unsigned *n_out, double **d_indices, unsigned n_in, const double *d_X, bool is_baseone=false)

Double-precision find. More...

afError af_where_UU (unsigned *n_out, unsigned **d_indices, unsigned n_in, const unsigned *d_X, bool is_baseone=false)

Unsigned integer find. More...

afError af_where_II (unsigned *n_out, int **d_indices, unsigned n_in, const int *d_X, bool is_baseone=false)

Integer find. More...

Two Dimension

Find non-zero values in a matrix.

Return 2D indices (zero or one-based).

Parameters

[out]	n_out	Number of non-zeros returned in `d_I` and `d_J`
[out]	d_I	Row indices (zero or one-based) of non-zero elements
[out]	d_J	Column indices (zero or one-based) of non-zero elements
[in]	n_in	Number of total elements in `d_X`
[in]	rows	Number of rows in `d_X`
[in]	d_X	Input matrix
[in]	is_baseone	Is indexed output one-based? If true, one-based indexing; else, zero-based. Default: false.

afError af_where2_BS (unsigned *n_out, float **d_I, float **d_J, unsigned n_in, unsigned rows, const bool *d_X, bool is_baseone=false)

Boolean (8-bit) find, single-precision indexing. More...

afError af_where2_BD (unsigned *n_out, double **d_I, double **d_J, unsigned n_in, unsigned rows, const bool *d_X, bool is_baseone=false)

Boolean (8-bit) find, double-precision indexing. More...

afError af_where2_SS (unsigned *n_out, float **d_I, float **d_J, unsigned n_in, unsigned rows, const float *d_X, bool is_baseone=false)

Single-precision find, single-precision indexing. More...

afError af_where2_SD (unsigned *n_out, double **d_I, double **d_J, unsigned n_in, unsigned rows, const float *d_X, bool is_baseone=false)

Single-precision find, double-precision indexing. More...

afError af_where2_DD (unsigned *n_out, double **d_I, double **d_J, unsigned n_in, unsigned rows, const double *d_X, bool is_baseone=false)

Double-precision find. More...

afError af_where2_UU (unsigned *n_out, unsigned **d_I, unsigned **d_J, unsigned n_in, unsigned rows, const unsigned *d_X, bool is_baseone=false)

Unsigned integer find. More...

afError af_where2_II (unsigned *n_out, int **d_I, int **d_J, unsigned n_in, unsigned rows, const int *d_X, bool is_baseone=false)

Integer find. More...

Detailed Description

The C++ interface for where.

Returns the indicies of the non-zero values in an set of elements.

These functions can also be used with conditions as parameters. In such a case, the input array to the function is a boolean array.

Function Documentation

afError af_where_BS	(	unsigned *	n_out,
		float **	d_indices,
		unsigned	n_in,
		const bool *	d_X,
		bool	is_baseone = `false`
	)

Boolean (8-bit) find, single-precision indexing.

afError af_where_BD	(	unsigned *	n_out,
		double **	d_indices,
		unsigned	n_in,
		const bool *	d_X,
		bool	is_baseone = `false`
	)

Boolean (8-bit) find, double-precision indexing.

afError af_where_BU	(	unsigned *	n_out,
		unsigned **	d_indices,
		unsigned	n_in,
		const bool *	d_X,
		bool	is_baseone = `false`
	)

Boolean (8-bit) find, integer indexing.

afError af_where_SS	(	unsigned *	n_out,
		float **	d_indices,
		unsigned	n_in,
		const float *	d_X,
		bool	is_baseone = `false`
	)

Single-precision find, single-precision indexing.

afError af_where_SD	(	unsigned *	n_out,
		double **	d_indices,
		unsigned	n_in,
		const float *	d_X,
		bool	is_baseone = `false`
	)

Single-precision find, double-precision indexing.

afError af_where_DD	(	unsigned *	n_out,
		double **	d_indices,
		unsigned	n_in,
		const double *	d_X,
		bool	is_baseone = `false`
	)

Double-precision find.

afError af_where_UU	(	unsigned *	n_out,
		unsigned **	d_indices,
		unsigned	n_in,
		const unsigned *	d_X,
		bool	is_baseone = `false`
	)

Unsigned integer find.

afError af_where_II	(	unsigned *	n_out,
		int **	d_indices,
		unsigned	n_in,
		const int *	d_X,
		bool	is_baseone = `false`
	)

Integer find.

afError af_where2_BS	(	unsigned *	n_out,
		float **	d_I,
		float **	d_J,
		unsigned	n_in,
		unsigned	rows,
		const bool *	d_X,
		bool	is_baseone = `false`
	)