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authorDongHun Kwak <dh0128.kwak@samsung.com>2016-10-06 10:38:45 +0900
committerDongHun Kwak <dh0128.kwak@samsung.com>2016-10-06 10:39:52 +0900
commit5cde13f21d36c7224b0e13d11c4b49379ae5210d (patch)
treee8269ac85a4b0f7d416e2565fa4f451b5cb41351 /boost/compute/algorithm/count.hpp
parentd9ec475d945d3035377a0d89ed42e382d8988891 (diff)
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Imported Upstream version 1.61.0
Change-Id: I96a1f878d1e6164f01e9aadd5147f38fca448d90 Signed-off-by: DongHun Kwak <dh0128.kwak@samsung.com>
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+//---------------------------------------------------------------------------//
+// 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_COUNT_HPP
+#define BOOST_COMPUTE_ALGORITHM_COUNT_HPP
+
+#include <boost/compute/lambda.hpp>
+#include <boost/compute/system.hpp>
+#include <boost/compute/command_queue.hpp>
+#include <boost/compute/algorithm/count_if.hpp>
+#include <boost/compute/type_traits/vector_size.hpp>
+
+namespace boost {
+namespace compute {
+
+/// Returns the number of occurrences of \p value in the range
+/// [\p first, \p last).
+///
+/// \see count_if()
+template<class InputIterator, class T>
+inline size_t count(InputIterator first,
+ InputIterator last,
+ const T &value,
+ command_queue &queue = system::default_queue())
+{
+ typedef typename std::iterator_traits<InputIterator>::value_type value_type;
+
+ using ::boost::compute::_1;
+ using ::boost::compute::lambda::all;
+
+ if(vector_size<value_type>::value == 1){
+ return ::boost::compute::count_if(first,
+ last,
+ _1 == value,
+ queue);
+ }
+ else {
+ return ::boost::compute::count_if(first,
+ last,
+ all(_1 == value),
+ queue);
+ }
+}
+
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_ALGORITHM_COUNT_HPP