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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_FUNCTIONAL_OPERATORS_HPP | |
12 | #define BOOST_COMPUTE_FUNCTIONAL_OPERATORS_HPP | |
13 | ||
14 | #include <string> | |
15 | ||
16 | namespace boost { | |
17 | namespace compute { | |
18 | namespace detail { | |
19 | ||
20 | template<class Expr1, class Expr2, class Result> | |
21 | struct invoked_binary_operator | |
22 | { | |
23 | typedef Result result_type; | |
24 | ||
25 | invoked_binary_operator(const std::string &op, | |
26 | const Expr1 &arg1, | |
27 | const Expr2 &arg2) | |
28 | : m_op(op), | |
29 | m_expr1(arg1), | |
30 | m_expr2(arg2) | |
31 | { | |
32 | } | |
33 | ||
34 | std::string op() const | |
35 | { | |
36 | return m_op; | |
37 | } | |
38 | ||
39 | Expr1 arg1() const | |
40 | { | |
41 | return m_expr1; | |
42 | } | |
43 | ||
44 | Expr2 arg2() const | |
45 | { | |
46 | return m_expr2; | |
47 | } | |
48 | ||
49 | std::string m_op; | |
50 | Expr1 m_expr1; | |
51 | Expr2 m_expr2; | |
52 | }; | |
53 | ||
54 | } // end detail namespace | |
55 | ||
56 | /// \internal_ | |
57 | #define BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(name, op, return_type, arg_type) \ | |
58 | template<class arg_type> \ | |
59 | class name : public function<return_type (arg_type, arg_type)> \ | |
60 | { \ | |
61 | public: \ | |
62 | name() : function<return_type (arg_type, arg_type)>(BOOST_PP_STRINGIZE(name)) { } \ | |
63 | \ | |
64 | template<class Arg1, class Arg2> \ | |
65 | detail::invoked_binary_operator<Arg1, Arg2, T> \ | |
66 | operator()(const Arg1 &x, const Arg2 &y) const \ | |
67 | { \ | |
68 | return detail::invoked_binary_operator<Arg1, Arg2, T>(op, x, y); \ | |
69 | } \ | |
70 | }; | |
71 | ||
72 | // arithmetic operations | |
73 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(plus, "+", T, T) | |
74 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(minus, "-", T, T) | |
75 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(multiplies, "*", T, T) | |
76 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(divides, "/", T, T) | |
77 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(modulus, "%", T, T) | |
78 | ||
79 | // comparisons | |
80 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(equal_to, "==", T, T) | |
81 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(not_equal_to, "!=", T, T) | |
82 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(greater, ">", T, T) | |
83 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(less, "<", T, T) | |
84 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(greater_equal, ">=", T, T) | |
85 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(less_equal, "<=", T, T) | |
86 | ||
87 | // logical operators | |
88 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(logical_and, "&&", T, T) | |
89 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(logical_or, "||", T, T) | |
90 | ||
91 | // bitwise operations | |
92 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(bit_and, "&", T, T) | |
93 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(bit_or, "|", T, T) | |
94 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(bit_xor, "^", T, T) | |
95 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(shift_left, "<<", T, T) | |
96 | BOOST_COMPUTE_DECLARE_BINARY_OPERATOR(shift_right, ">>", T, T) | |
97 | ||
98 | } // end compute namespace | |
99 | } // end boost namespace | |
100 | #endif // BOOST_COMPUTE_FUNCTIONAL_OPERATORS_HPP |