Template Function thrust::mismatch(InputIterator1, InputIterator1, InputIterator2, BinaryPredicate)

Function Documentation

template<typename InputIterator1, typename InputIterator2, typename BinaryPredicate>
thrust::pair<InputIterator1, InputIterator2> thrust::mismatch(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, BinaryPredicate pred)

mismatch finds the first position where the two ranges [first1, last1) and [first2, first2 + (last1 - first1)) differ. The two versions of mismatch use different tests for whether elements differ.

This version of mismatch finds the first iterator i in [first1, last1) such that pred(*i, *(first2 + (i - first1)) is false. The return value is a pair whose first element is i and whose second element is *(first2 + (i - first1)). If no such iterator i exists, the return value is a pair whose first element is last1 and whose second element is *(first2 + (last1 - first1)).

#include <thrust/mismatch.h>
#include <thrust/device_vector.h>
...
thrust::device_vector<int> vec1(4);
thrust::device_vector<int> vec2(4);

vec1[0] = 0;  vec2[0] = 0; 
vec1[1] = 5;  vec2[1] = 5;
vec1[2] = 3;  vec2[2] = 8;
vec1[3] = 7;  vec2[3] = 7;

typedef thrust::device_vector<int>::iterator Iterator;
thrust::pair<Iterator,Iterator> result;

result = thrust::mismatch(vec1.begin(), vec1.end(), vec2.begin(), thrust::equal_to<int>());

// result.first  is vec1.begin() + 2
// result.second is vec2.begin() + 2
Return

The first position where the sequences differ.

Parameters

  • first1: The beginning of the first sequence.

  • last1: The end of the first sequence.

  • first2: The beginning of the second sequence.

  • pred: The binary predicate to compare elements.

Template Parameters

See

find

See

find_if