File: static_assert_example_3.cpp

package info (click to toggle)
boost 1.34.1-14
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 116,412 kB
  • ctags: 259,566
  • sloc: cpp: 642,395; xml: 56,450; python: 17,612; ansic: 14,520; sh: 2,265; yacc: 858; perl: 481; makefile: 478; lex: 94; sql: 74; csh: 6
file content (33 lines) | stat: -rw-r--r-- 954 bytes parent folder | download | duplicates (2)
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
//  (C) Copyright John Maddock 2000.
//  Use, modification and distribution are 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)

//  See http://www.boost.org for most recent version including documentation.

#include <climits>
#include <boost/limits.hpp>
#include <boost/static_assert.hpp>

template <class UnsignedInt>
class myclass
{
private:
   BOOST_STATIC_ASSERT((std::numeric_limits<UnsignedInt>::digits >= 16)
                        && std::numeric_limits<UnsignedInt>::is_specialized
                        && std::numeric_limits<UnsignedInt>::is_integer
                        && !std::numeric_limits<UnsignedInt>::is_signed);
public:
   /* details here */
};

myclass<unsigned>      m1; // this should be OK
//myclass<int>           m2; // this should fail
//myclass<unsigned char> m3; // and so should this

int main()
{
   return 0;
}