thrust::equal

Defined in thrust/equal.h

template<typename DerivedPolicy, typename InputIterator1, typename InputIterator2> bool thrust::equal(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, InputIterator1 first1, InputIterator1 last1, InputIterator2 first2)

equal returns true if the two ranges [first1, last1) and [first2, first2 + (last1 - first1)) are identical when compared element-by-element, and otherwise returns false.

This version of equal returns true if and only if for every iterator i in [first1, last1), *i == *(first2 + (i - first1)).

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

The following code snippet demonstrates how to use equal to test two ranges for equality using the thrust::host execution policy:

#include <thrust/equal.h>
#include <thrust/execution_policy.h>
...
int A1[7] = {3, 1, 4, 1, 5, 9, 3};
int A2[7] = {3, 1, 4, 2, 8, 5, 7};
...
bool result = thrust::equal(thrust::host, A1, A1 + 7, A2);

// result == false