Publishing R3
[platform/upstream/dldt.git] / inference-engine / thirdparty / clDNN / common / boost / 1.64.0 / include / boost-1_64 / boost / compute / algorithm / replace.hpp
1 //---------------------------------------------------------------------------//
2 // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
3 //
4 // Distributed under the Boost Software License, Version 1.0
5 // See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt
7 //
8 // See http://boostorg.github.com/compute for more information.
9 //---------------------------------------------------------------------------//
10
11 #ifndef BOOST_COMPUTE_ALGORITHM_REPLACE_HPP
12 #define BOOST_COMPUTE_ALGORITHM_REPLACE_HPP
13
14 #include <boost/compute/system.hpp>
15 #include <boost/compute/command_queue.hpp>
16 #include <boost/compute/detail/meta_kernel.hpp>
17 #include <boost/compute/detail/iterator_range_size.hpp>
18
19 namespace boost {
20 namespace compute {
21 namespace detail {
22
23 template<class Iterator, class T>
24 class replace_kernel : public meta_kernel
25 {
26 public:
27     replace_kernel()
28         : meta_kernel("replace")
29     {
30         m_count = 0;
31     }
32
33     void set_range(Iterator first, Iterator last)
34     {
35         m_count = detail::iterator_range_size(first, last);
36
37         *this <<
38             "const uint i = get_global_id(0);\n" <<
39             "if(" << first[var<cl_uint>("i")] << " == " << var<T>("old_value") << ")\n" <<
40             "    " << first[var<cl_uint>("i")] << '=' << var<T>("new_value") << ";\n";
41     }
42
43     void set_old_value(const T &old_value)
44     {
45         add_set_arg<T>("old_value", old_value);
46     }
47
48     void set_new_value(const T &new_value)
49     {
50         add_set_arg<T>("new_value", new_value);
51     }
52
53     void exec(command_queue &queue)
54     {
55         if(m_count == 0){
56             // nothing to do
57             return;
58         }
59
60         exec_1d(queue, 0, m_count);
61     }
62
63 private:
64     size_t m_count;
65 };
66
67 } // end detail namespace
68
69 /// Replaces each instance of \p old_value in the range [\p first,
70 /// \p last) with \p new_value.
71 template<class Iterator, class T>
72 inline void replace(Iterator first,
73                     Iterator last,
74                     const T &old_value,
75                     const T &new_value,
76                     command_queue &queue = system::default_queue())
77 {
78     detail::replace_kernel<Iterator, T> kernel;
79
80     kernel.set_range(first, last);
81     kernel.set_old_value(old_value);
82     kernel.set_new_value(new_value);
83
84     kernel.exec(queue);
85 }
86
87 } // end compute namespace
88 } // end boost namespace
89
90 #endif // BOOST_COMPUTE_ALGORITHM_REPLACE_HPP