find#

Overloads#

find(exec, first, last, value)#

template<typename DerivedPolicy, typename InputIterator, typename T>
InputIterator thrust::find(
const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
InputIterator first,
InputIterator last,
const T &value,
)#

find returns the first iterator i in the range [first, last) such that *i == value or last if no such iterator exists.

The algorithm’s execution is parallelized as determined by exec.

#include <thrust/find.h>
#include <thrust/device_vector.h>
#include <thrust/execution_policy.h>
...
thrust::device_vector<int> input(4);

input[0] = 0;
input[1] = 5;
input[2] = 3;
input[3] = 7;

thrust::device_vector<int>::iterator iter;

iter = thrust::find(thrust::device, input.begin(), input.end(), 3); // returns input.first() + 2
iter = thrust::find(thrust::device, input.begin(), input.end(), 5); // returns input.first() + 1
iter = thrust::find(thrust::device, input.begin(), input.end(), 9); // returns input.end()

See also

find_if

See also

mismatch

Parameters:

  • exec – The execution policy to use for parallelization.

  • first – Beginning of the sequence to search.

  • last – End of the sequence to search.

  • value – The value to find.

Template Parameters:

  • DerivedPolicy – The name of the derived execution policy.

  • InputIterator – is a model of Input Iterator and InputIterator's value_type is equality comparable to type T.

  • T – is a model of EqualityComparable.

Returns:

The first iterator i such that *i == value or last.

find(first, last, value)#

template<typename InputIterator, typename T>
InputIterator thrust::find(
InputIterator first,
InputIterator last,
const T &value,
)#

find returns the first iterator i in the range [first, last) such that *i == value or last if no such iterator exists.

#include <thrust/find.h>
#include <thrust/device_vector.h>
...
thrust::device_vector<int> input(4);

input[0] = 0;
input[1] = 5;
input[2] = 3;
input[3] = 7;

thrust::device_vector<int>::iterator iter;

iter = thrust::find(input.begin(), input.end(), 3); // returns input.first() + 2
iter = thrust::find(input.begin(), input.end(), 5); // returns input.first() + 1
iter = thrust::find(input.begin(), input.end(), 9); // returns input.end()

See also

find_if

See also

mismatch

Parameters:

  • first – Beginning of the sequence to search.

  • last – End of the sequence to search.

  • value – The value to find.

Template Parameters:
Returns:

The first iterator i such that *i == value or last.