Boost C++ Libraries

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Function template copy_n

boost::compute::copy_n

Synopsis

// In header: <boost/compute/algorithm/copy_n.hpp>


template<typename InputIterator, typename Size, typename OutputIterator> 
  OutputIterator 
  copy_n(InputIterator first, Size count, OutputIterator result, 
         command_queue & queue = system::default_queue(), 
         const wait_list & events = wait_list());

Description

Copies count elements from first to result.

For example, to copy four values from the host to the device:

// values on the host and vector on the device
float values[4] = { 1.f, 2.f, 3.f, 4.f };
boost::compute::vector<float> vec(4, context);

// copy from the host to the device
boost::compute::copy_n(values, 4, vec.begin(), queue);

Space complexity: \Omega(1)

See Also:

copy()


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