A high-performance general-purpose compute library

Return the unique values in an array. More...

## Functions

AFAPI array setUnique (const array &in, const bool is_sorted=false)
C++ Interface to return the unique values in an array. More...

AFAPI af_err af_set_unique (af_array *out, const af_array in, const bool is_sorted)
C Interface to return the unique values in an array. More...

AFAPI array setunique (const array &in, const bool is_sorted=false)

## Detailed Description

Return the unique values in an array.

The input must be a one-dimensional array. Batching is not currently supported.

An example, unsorted:

// input data
int h_set[6] = {3, 2, 3, 3, 2, 1};
af::array set(6, h_set);
af::array unique = setUnique(set);
// unique == { 1, 2, 3 };
A multi dimensional data container.
Definition: array.h:37

The function can be sped up if it is known that the inputs are sorted.

An example, sorted (ascending):

// input data
int h_set[6] = {1, 2, 2, 3, 3, 3};
af::array set(6, h_set);
// is_sorted flag specifies if input is sorted,
// allows algorithm to skip internal sorting step
const bool is_sorted = true;
af::array unique = setUnique(set, is_sorted);
// unique == { 1, 2, 3 };

The inputs can be sorted in ascending or descending order.

An example, sorted (descending):

// input data
int h_set[6] = {3, 3, 3, 2, 2, 1};
af::array set(6, h_set);
// is_sorted flag specifies if input is sorted,
// allows algorithm to skip internal sorting step
// input can be sorted in ascending or descending order
const bool is_sorted = true;
af::array unique = setUnique(set, is_sorted);
// unique == { 3, 2, 1 };

## ◆ af_set_unique()

 AFAPI af_err af_set_unique ( af_array * out, const af_array in, const bool is_sorted )

C Interface to return the unique values in an array.

Parameters
 [out] out unique values [in] in input array [in] is_sorted if true, skip the sorting steps internally
Returns
AF_SUCCESS, if function returns successfully, else an af_err code is given

## ◆ setUnique()

 AFAPI array setUnique ( const array & in, const bool is_sorted = false )

C++ Interface to return the unique values in an array.

Parameters
 [in] in input array [in] is_sorted if true, skip the sorting steps internally
Returns
unique values

## ◆ setunique()

 AFAPI array setunique ( const array & in, const bool is_sorted = false )

C++ Interface to return the unique values in an array.

Parameters
 [in] in input array [in] is_sorted if true, skip the sorting steps internally
Returns
unique values
Deprecated: