scanByKey

Scan an array (generalized) over a given dimension, according to an array of keys. More...

Functions
AFAPI array	scanByKey (const array &key, const array &in, const int dim=0, binaryOp op=AF_BINARY_ADD, bool inclusive_scan=true)
	C++ Interface to scan an array (generalized) over a given dimension, according to an array of keys. More...
AFAPI af_err	af_scan_by_key (af_array *out, const af_array key, const af_array in, const int dim, af_binary_op op, bool inclusive_scan)
	C Interface to scan an array (generalized) over a given dimension, according to an array of keys. More...

Detailed Description

Scan an array (generalized) over a given dimension, according to an array of keys.

Perform inclusive or exclusive scan using a given binary operation along a given dimension using a key.

Binary operations can be add, mul, min, max as defined by af_binary_op.

Function Documentation

af_scan_by_key()

AFAPI af_err af_scan_by_key	(	af_array *	out,
		const af_array	key,
		const af_array	in,
		const int	dim,
		af_binary_op	op,
		bool	inclusive_scan
	)

C Interface to scan an array (generalized) over a given dimension, according to an array of keys.

Parameters

[out]	out	scan
[in]	key	keys array
[in]	in	input array
[in]	dim	dimension along which the scan occurs
[in]	op	type of binary operation used
[in]	inclusive_scan	flag specifying whether the scan is inclusive

Returns

AF_SUCCESS, if function returns successfully, else an af_err code is given

scanByKey()

AFAPI array scanByKey	(	const array &	key,
		const array &	in,
		const int	dim = 0,
		binaryOp	op = AF_BINARY_ADD,
		bool	inclusive_scan = true
	)

C++ Interface to scan an array (generalized) over a given dimension, according to an array of keys.

Parameters

[in]	key	keys array
[in]	in	input array
[in]	dim	dimension along which the scan occurs, 0 denotes the first non-singleton dimension
[in]	op	type of binary operation used
[in]	inclusive_scan	flag specifying whether the scan is inclusive

Returns

scan