count

Count non-zero values in an array along a given dimension. More...

Functions
AFAPI array	count (const array &in, const int dim=-1)
	C++ Interface to count non-zero values in an array along a given dimension. More...
template<typename T >
T	count (const array &in)
	C++ Interface to count non-zero values along the first non-singleton dimension. More...
AFAPI af_err	af_count (af_array *out, const af_array in, const int dim)
	C Interface to count non-zero values in an array along a given dimension. More...
AFAPI af_err	af_count_all (double *real, double *imag, const af_array in)
	C Interface to count non-zero values over all dimensions. More...
AFAPI af_err	af_count_all_array (af_array *out, const af_array in)
	C Interface to count non-zero values over all dimensions. More...

Detailed Description

Count non-zero values in an array along a given dimension.

The output type is u32.

This function runs across all batches in the input simultaneously.

Function Documentation

af_count()

AFAPI af_err af_count	(	af_array *	out,
		const af_array	in,
		const int	dim
	)

C Interface to count non-zero values in an array along a given dimension.

NaN values are treated as non-zero.

Parameters

[out]	out	count
[in]	in	input array
[in]	dim	dimension along which the count occurs

Returns

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

af_count_all()

AFAPI af_err af_count_all	(	double *	real,
		double *	imag,
		const af_array	in
	)

C Interface to count non-zero values over all dimensions.

Parameters

[out]	real	count
[out]	imag	0
[in]	in	input array

Returns

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

af_count_all_array()

AFAPI af_err af_count_all_array	(	af_array *	out,
		const af_array	in
	)

C Interface to count non-zero values over all dimensions.

Parameters

[out]	out	count
[in]	in	input array

Returns

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

count() [1/2]

T count

(

const array &

in

)

C++ Interface to count non-zero values along the first non-singleton dimension.

NaN values are treated as non-zero.

Parameters

[in]

in

input array

Returns

count

count() [2/2]

AFAPI array count	(	const array &	in,
		const int	dim = -1
	)

C++ Interface to count non-zero values in an array along a given dimension.

NaN values are treated as non-zero.

Parameters

[in]	in	input array
[in]	dim	dimension along which the count occurs, -1 denotes the first non-singleton dimension

Returns

count