Template Function thrust::copy(InputIterator, InputIterator, OutputIterator)

Function Documentation

template<typename InputIterator, typename OutputIterator>
OutputIterator thrust::copy(InputIterator first, InputIterator last, OutputIterator result)

copy copies elements from the range [first, last) to the range [result, result + (last - first)). That is, it performs the assignments *result = *first, *(result + 1) = *(first + 1), and so on. Generally, for every integer n from 0 to last - first, copy performs the assignment *(result + n) = *(first + n). Unlike std::copy, copy offers no guarantee on order of operation. As a result, calling copy with overlapping source and destination ranges has undefined behavior.

The return value is result + (last - first).

The following code snippet demonstrates how to use

copy to copy from one range to another.
Return

The end of the destination sequence.

See

http://www.sgi.com/tech/stl/copy.html

Pre

result may be equal to first, but result shall not be in the range [first, last) otherwise.

Parameters

  • first: The beginning of the sequence to copy.

  • last: The end of the sequence to copy.

  • result: The destination sequence.

Template Parameters

  • InputIterator: must be a model of Input Iterator and InputIterator's value_type must be convertible to OutputIterator's value_type.

  • OutputIterator: must be a model of Output Iterator.

#include <thrust/copy.h>
#include <thrust/device_vector.h>
...

thrust::device_vector<int> vec0(100);
thrust::device_vector<int> vec1(100);
...

thrust::copy(vec0.begin(), vec0.end(),
             vec1.begin());

// vec1 is now a copy of vec0