File: policy_ref_snip12.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 (38 lines) | stat: -rw-r--r-- 951 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
34
35
36
37
38
//  Copyright John Maddock 2007.
//  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)

// Note that this file contains quickbook mark-up as well as code
// and comments, don't change any of the special comment mark-ups!

//[policy_ref_snip12

#include <boost/math/special_functions/gamma.hpp>

namespace myspace{

using namespace boost::math::policies;

// Define a policy that does not throw on overflow:
typedef policy<overflow_error<errno_on_error> > my_policy;

// Define the special functions in this scope to use the policy:   
BOOST_MATH_DECLARE_SPECIAL_FUNCTIONS(my_policy)

}

//
// Now we can use myspace::tgamma etc.
// They will automatically use "my_policy":
//
double t = myspace::tgamma(30.0); // will not throw on overflow

//]

#include <iostream>

int main()
{
   std::cout << t << std::endl;
}