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Diffstat (limited to 'boost/compute/algorithm/copy_n.hpp')
-rw-r--r-- | boost/compute/algorithm/copy_n.hpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/boost/compute/algorithm/copy_n.hpp b/boost/compute/algorithm/copy_n.hpp new file mode 100644 index 0000000000..f0989edc67 --- /dev/null +++ b/boost/compute/algorithm/copy_n.hpp @@ -0,0 +1,51 @@ +//---------------------------------------------------------------------------// +// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com> +// +// Distributed under the Boost Software License, Version 1.0 +// See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt +// +// See http://boostorg.github.com/compute for more information. +//---------------------------------------------------------------------------// + +#ifndef BOOST_COMPUTE_ALGORITHM_COPY_N_HPP +#define BOOST_COMPUTE_ALGORITHM_COPY_N_HPP + +#include <boost/compute/system.hpp> +#include <boost/compute/command_queue.hpp> +#include <boost/compute/algorithm/copy.hpp> + +namespace boost { +namespace compute { + +/// Copies \p count elements from \p first to \p result. +/// +/// For example, to copy four values from the host to the device: +/// \code +/// // 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); +/// \endcode +/// +/// \see copy() +template<class InputIterator, class Size, class OutputIterator> +inline OutputIterator copy_n(InputIterator first, + Size count, + OutputIterator result, + command_queue &queue = system::default_queue()) +{ + typedef typename std::iterator_traits<InputIterator>::difference_type difference_type; + + return ::boost::compute::copy(first, + first + static_cast<difference_type>(count), + result, + queue); +} + +} // end compute namespace +} // end boost namespace + +#endif // BOOST_COMPUTE_ALGORITHM_COPY_N_HPP |