mirror of
https://github.com/boostorg/math.git
synced 2026-01-19 04:22:09 +00:00
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// 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!
|
|
|
|
#include <iostream>
|
|
|
|
//[policy_eg_7
|
|
|
|
#include <boost/math/distributions.hpp>
|
|
|
|
namespace {
|
|
|
|
using namespace boost::math::policies;
|
|
|
|
typedef policy<
|
|
// return infinity and set errno rather than throw:
|
|
overflow_error<errno_on_error>,
|
|
// Don't promote double -> long double internally:
|
|
promote_double<false>,
|
|
// Return the closest integer result for discrete quantiles:
|
|
discrete_quantile<integer_round_nearest>
|
|
> my_policy;
|
|
|
|
BOOST_MATH_DECLARE_DISTRIBUTIONS(double, my_policy)
|
|
|
|
} // close namespace my_namespace
|
|
|
|
int main()
|
|
{
|
|
//
|
|
// Start with something we know will overflow:
|
|
//
|
|
normal norm(10, 2);
|
|
errno = 0;
|
|
std::cout << "Result of quantile(norm, 0) is: "
|
|
<< quantile(norm, 0) << std::endl;
|
|
std::cout << "errno = " << errno << std::endl;
|
|
errno = 0;
|
|
std::cout << "Result of quantile(norm, 1) is: "
|
|
<< quantile(norm, 1) << std::endl;
|
|
std::cout << "errno = " << errno << std::endl;
|
|
//
|
|
// Now try a discrete distribution:
|
|
//
|
|
binomial binom(20, 0.25);
|
|
std::cout << "Result of quantile(binom, 0.05) is: "
|
|
<< quantile(binom, 0.05) << std::endl;
|
|
std::cout << "Result of quantile(complement(binom, 0.05)) is: "
|
|
<< quantile(complement(binom, 0.05)) << std::endl;
|
|
}
|
|
|
|
//] ends quickbook imported section
|
|
|