Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
14352 changed files with 3176737 additions and 0 deletions
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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_DETAIL_SERIAL_REDUCE_HPP
+#define BOOST_COMPUTE_ALGORITHM_DETAIL_SERIAL_REDUCE_HPP
+
+#include <boost/compute/command_queue.hpp>
+#include <boost/compute/detail/meta_kernel.hpp>
+#include <boost/compute/detail/iterator_range_size.hpp>
+#include <boost/compute/type_traits/result_of.hpp>
+
+namespace boost {
+namespace compute {
+namespace detail {
+
+template<class InputIterator, class OutputIterator, class BinaryFunction>
+inline void serial_reduce(InputIterator first,
+                          InputIterator last,
+                          OutputIterator result,
+                          BinaryFunction function,
+                          command_queue &queue)
+{
+    typedef typename
+        std::iterator_traits<InputIterator>::value_type T;
+    typedef typename
+        ::boost::compute::result_of<BinaryFunction(T, T)>::type result_type;
+
+    const context &context = queue.get_context();
+    size_t count = detail::iterator_range_size(first, last);
+    if(count == 0){
+        return;
+    }
+
+    meta_kernel k("serial_reduce");
+    size_t count_arg = k.add_arg<cl_uint>("count");
+
+    k <<
+        k.decl<result_type>("result") << " = " << first[0] << ";\n" <<
+        "for(uint i = 1; i < count; i++)\n" <<
+        "    result = " << function(k.var<T>("result"),
+                                    first[k.var<uint_>("i")]) << ";\n" <<
+        result[0] << " = result;\n";
+
+    kernel kernel = k.compile(context);
+
+    kernel.set_arg(count_arg, static_cast<uint_>(count));
+
+    queue.enqueue_task(kernel);
+}
+
+} // end detail namespace
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_ALGORITHM_DETAIL_SERIAL_REDUCE_HPP