1//
2// mem_fn_ref_test.cpp - reference_wrapper
3//
4// Copyright 2009, 2024 Peter Dimov
5//
6// Distributed under the Boost Software License, Version 1.0.
7// See accompanying file LICENSE_1_0.txt or copy at
8// http://www.boost.org/LICENSE_1_0.txt
9//
10
11#if defined(__GNUC__) && defined(__SANITIZE_ADDRESS__)
12# pragma GCC diagnostic ignored "-Warray-bounds"
13#endif
14
15#include <boost/mem_fn.hpp>
16#include <boost/ref.hpp>
17#include <boost/core/lightweight_test.hpp>
18
19struct X
20{
21 int f0() { return 1; }
22 int g0() const { return -1; }
23
24 int f1( int x1 ) { return x1; }
25 int g1( int x1 ) const { return -x1; }
26
27 int f2( int x1, int x2 ) { return x1+x2; }
28 int g2( int x1, int x2 ) const { return -x1-x2; }
29
30 int f3( int x1, int x2, int x3 ) { return x1+x2+x3; }
31 int g3( int x1, int x2, int x3 ) const { return -x1-x2-x3; }
32};
33
34int main()
35{
36 X x;
37
38 BOOST_TEST_EQ( boost::mem_fn( &X::f0 )( boost::ref( x ) ), 1 );
39 BOOST_TEST_EQ( boost::mem_fn( &X::g0 )( boost::cref( x ) ), -1 );
40
41 BOOST_TEST_EQ( boost::mem_fn( &X::f1 )( boost::ref( x ), 1 ), 1 );
42 BOOST_TEST_EQ( boost::mem_fn( &X::g1 )( boost::cref( x ), 1 ), -1 );
43
44 BOOST_TEST_EQ( boost::mem_fn( &X::f2 )( boost::ref( x ), 1, 2 ), 1+2 );
45 BOOST_TEST_EQ( boost::mem_fn( &X::g2 )( boost::cref( x ), 1, 2 ), -1-2 );
46
47 BOOST_TEST_EQ( boost::mem_fn( &X::f3 )( boost::ref( x ), 1, 2, 3 ), 1+2+3 );
48 BOOST_TEST_EQ( boost::mem_fn( &X::g3 )( boost::cref( x ), 1, 2, 3 ), -1-2-3 );
49
50 return boost::report_errors();
51}
52

source code of boost/libs/bind/test/mem_fn_ref_test.cpp