45 lines
1.4 KiB
Plaintext
45 lines
1.4 KiB
Plaintext
//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_ALGORITHM_LOWER_BOUND_HPP
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#define BOOST_COMPUTE_ALGORITHM_LOWER_BOUND_HPP
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#include <boost/compute/lambda.hpp>
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#include <boost/compute/system.hpp>
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#include <boost/compute/command_queue.hpp>
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#include <boost/compute/algorithm/detail/binary_find.hpp>
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namespace boost {
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namespace compute {
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/// Returns an iterator pointing to the first element in the sorted
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/// range [\p first, \p last) that is not less than \p value.
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///
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/// \see upper_bound()
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template<class InputIterator, class T>
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inline InputIterator
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lower_bound(InputIterator first,
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InputIterator last,
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const T &value,
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command_queue &queue = system::default_queue())
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{
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using ::boost::compute::_1;
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InputIterator position =
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detail::binary_find(first, last, _1 >= value, queue);
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return position;
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}
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} // end compute namespace
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} // end boost namespace
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#endif // BOOST_COMPUTE_ALGORITHM_LOWER_BOUND_HPP
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