1 // Copyright 2014 Renato Tegon Forti, Antony Polukhin.
2 // Copyright 2015-2019 Antony Polukhin.
3 //
4 // Distributed under the Boost Software License, Version 1.0.
5 // (See accompanying file LICENSE_1_0.txt
6 // or copy at http://www.boost.org/LICENSE_1_0.txt)
7 
8 #include <iostream>
9 
10 
11 //[plugcpp_my_plugin_sum
12 #include <boost/config.hpp> // for BOOST_SYMBOL_EXPORT
13 #include "../tutorial_common/my_plugin_api.hpp"
14 
15 namespace my_namespace {
16 
17 class my_plugin_sum : public my_plugin_api {
18 public:
my_plugin_sum()19     my_plugin_sum() {
20         std::cout << "Constructing my_plugin_sum" << std::endl;
21     }
22 
name() const23     std::string name() const {
24         return "sum";
25     }
26 
calculate(float x,float y)27     float calculate(float x, float y) {
28         return x + y;
29     }
30 
~my_plugin_sum()31     ~my_plugin_sum() {
32         std::cout << "Destructing my_plugin_sum ;o)" << std::endl;
33     }
34 };
35 
36 // Exporting `my_namespace::plugin` variable with alias name `plugin`
37 // (Has the same effect as `BOOST_DLL_ALIAS(my_namespace::plugin, plugin)`)
38 extern "C" BOOST_SYMBOL_EXPORT my_plugin_sum plugin;
39 my_plugin_sum plugin;
40 
41 } // namespace my_namespace
42 
43 //]
44