max

Find the maximum values and their locations. More...

Functions
AFAPI array	max (const array &in, const int dim=-1)
	C++ Interface for maximum values in an array.
AFAPI void	max (array &val, array &idx, const array &in, const array &ragged_len, const int dim)
	C++ Interface for ragged max values in an array Uses an additional input array to determine the number of elements to use along the reduction axis.
template<typename T >
T	max (const array &in)
	C++ Interface for getting maximum value of an array.
AFAPI void	max (array &val, array &idx, const array &in, const int dim=-1)
	C++ Interface for getting maximum values and their locations in an array.
template<typename T >
void	max (T *val, unsigned *idx, const array &in)
	C++ Interface for getting maximum value and its location from the entire array.
AFAPI af_err	af_max (af_array *out, const af_array in, const int dim)
	C Interface for maximum values in an array.
AFAPI af_err	af_max_ragged (af_array *val, af_array *idx, const af_array in, const af_array ragged_len, const int dim)
	C Interface for finding ragged max values in an array Uses an additional input array to determine the number of elements to use along the reduction axis.
AFAPI af_err	af_max_all (double *real, double *imag, const af_array in)
	C Interface for getting maximum value of an array.
AFAPI af_err	af_imax (af_array *out, af_array *idx, const af_array in, const int dim)
	C Interface for getting maximum values and their locations in an array.
AFAPI af_err	af_imax_all (double *real, double *imag, unsigned *idx, const af_array in)
	C Interface for getting maximum value and it's location from the entire array.

Detailed Description

Find the maximum values and their locations.

This function performs the operation across all batches present in the input simultaneously.

Function Documentation

af_imax()

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

C Interface for getting maximum values and their locations in an array.

Parameters

[out]	out	will contain the maximum of all values in in along dim
[out]	idx	will contain the location of maximum of all values in in along dim
[in]	in	is the input array
[in]	dim	The dimension along which the maximum value is extracted

Returns

AF_SUCCESS if the execution completes properly

af_imax_all()

AFAPI af_err af_imax_all	(	double *	real,
		double *	imag,
		unsigned *	idx,
		const af_array	in
	)

C Interface for getting maximum value and it's location from the entire array.

Parameters

[out]	real	will contain the real part of maximum value of all elements in input in
[out]	imag	will contain the imaginary part of maximum value of all elements in input in
[out]	idx	will contain the location of maximum of all values in in
[in]	in	is the input array

Returns

AF_SUCCESS if the execution completes properly

Note

imag is always set to 0 when in is real.

af_max()

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

C Interface for maximum values in an array.

Parameters

[out]	out	will contain the maximum of all values in in along dim
[in]	in	is the input array
[in]	dim	The dimension along which the maximum value is extracted

Returns

AF_SUCCESS if the execution completes properly

af_max_all()

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

C Interface for getting maximum value of an array.

Parameters

[out]	real	will contain the real part of maximum value of all elements in input in
[out]	imag	will contain the imaginary part of maximum value of all elements in input in
[in]	in	is the input array

Returns

AF_SUCCESS if the execution completes properly

Note

imag is always set to 0 when in is real.

af_max_ragged()

AFAPI af_err af_max_ragged	(	af_array *	val,
		af_array *	idx,
		const af_array	in,
		const af_array	ragged_len,
		const int	dim
	)

C Interface for finding ragged max values in an array Uses an additional input array to determine the number of elements to use along the reduction axis.

Parameters

[out]	val	will contain the maximum ragged values in in along dim according to ragged_len
[out]	idx	will contain the locations of the maximum ragged values in in along dim according to ragged_len
[in]	in	contains the input values to be reduced
[in]	ragged_len	array containing number of elements to use when reducing along dim
[in]	dim	The dimension along which the max operation occurs

Returns

AF_SUCCESS if the execution completes properly

Note

NaN values are ignored

max() [1/5]

AFAPI void max	(	array &	val,
		array &	idx,
		const array &	in,
		const array &	ragged_len,
		const int	dim
	)

C++ Interface for ragged max values in an array Uses an additional input array to determine the number of elements to use along the reduction axis.

Parameters

[out]	val	will contain the maximum ragged values in in along dim according to ragged_len
[out]	idx	will contain the locations of the maximum ragged values in in along dim according to ragged_len
[in]	in	contains the input values to be reduced
[in]	ragged_len	array containing number of elements to use when reducing along dim
[in]	dim	The dimension along which the max operation occurs

Note

NaN values are ignored

max() [2/5]

AFAPI void max	(	array &	val,
		array &	idx,
		const array &	in,
		const int	dim = -1
	)

C++ Interface for getting maximum values and their locations in an array.

Parameters

[out]	val	will contain the maximum values along dimension dim
[out]	idx	will contain the locations of maximum all values along dimension dim
[in]	in	is the input array
[in]	dim	The dimension along which the maximum value needs to be extracted

Note

dim is -1 by default. -1 denotes the first non-singleton dimension.

NaN values are ignored

max() [3/5]

T max

(

const array &

in

)

C++ Interface for getting maximum value of an array.

Parameters

[in]

in

is the input array

Returns

the maximum of all values of in

Note

NaN values are ignored

max() [4/5]

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

C++ Interface for maximum values in an array.

Parameters

[in]	in	is the input array
[in]	dim	The dimension along which the maximum value needs to be extracted

Returns

result of maximum all values along dimension dim

Note

dim is -1 by default. -1 denotes the first non-singleton dimension.

NaN values are ignored

Examples

financial/heston_model.cpp, graphics/fractal.cpp, and graphics/gravity_sim.cpp.

max() [5/5]

void max	(	T *	val,
		unsigned *	idx,
		const array &	in
	)

C++ Interface for getting maximum value and its location from the entire array.

Parameters

[out]	val	contains the maximum values in the input
[out]	idx	contains the locations of maximum all values in the input
[in]	in	is the input array

Note

NaN values are ignored