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// 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)
#include <iostream>
//[policy_eg_1
#include <boost/math/special_functions/gamma.hpp>
//
// Define the policy to use:
//
using namespace boost::math::policies;
typedef policy<
domain_error<errno_on_error>,
pole_error<errno_on_error>,
overflow_error<errno_on_error>,
evaluation_error<errno_on_error>
> c_policy;
//
// Now use the policy when calling tgamma:
//
int main()
{
errno = 0;
std::cout << "Result of tgamma(30000) is: "
<< boost::math::tgamma(30000, c_policy()) << std::endl;
std::cout << "errno = " << errno << std::endl;
std::cout << "Result of tgamma(-10) is: "
<< boost::math::tgamma(-10, c_policy()) << std::endl;
std::cout << "errno = " << errno << std::endl;
}
//]
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