File: function_arith_cxx98.cpp

package info (click to toggle)
boost1.35 1.35.0-5
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 203,856 kB
  • ctags: 337,867
  • sloc: cpp: 938,683; xml: 56,847; ansic: 41,589; python: 18,999; sh: 11,566; makefile: 664; perl: 494; yacc: 456; asm: 353; csh: 6
file content (34 lines) | stat: -rw-r--r-- 798 bytes parent folder | download | duplicates (21) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
// Function library

// Copyright (C) 2001-2003 Douglas Gregor

// Use, modification and distribution is subject to 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) 

// For more information, see http://www.boost.org/

    
#include <boost/function.hpp>
#include <iostream>


float mul_ints(int x, int y) { return ((float)x) * y; }
struct int_div { 
  float operator()(int x, int y) const { return ((float)x)/y; }; 
};

int main()
{
    boost::function<float (int x, int y)> f;
    f = int_div();
    std::cout << f(5, 3) << std::endl;
    if (f)
  std::cout << f(5, 3) << std::endl;
else
  std::cout << "f has no target, so it is unsafe to call" << std::endl;
    f = 0;
    f = &mul_ints;
  
    return 0;
}