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- // Copyright John Maddock 2007.
- // Copyright Paul A. Bristow 2007, 2010.
- // 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)
- #ifdef _MSC_VER
- # pragma warning (disable : 4305) // 'initializing' : truncation from 'long double' to 'const eval_type'
- # pragma warning (disable : 4244) // conversion from 'long double' to 'const eval_type'
- #endif
- #include <iostream>
- using std::cout; using std::endl;
- //[policy_eg_3
- #include <boost/math/distributions/binomial.hpp>
- using boost::math::binomial_distribution;
- // Begin by defining a policy type, that gives the behaviour we want:
- //using namespace boost::math::policies; or explicitly
- using boost::math::policies::policy;
- using boost::math::policies::promote_float;
- using boost::math::policies::discrete_quantile;
- using boost::math::policies::integer_round_nearest;
- typedef policy<
- promote_float<false>, // Do not promote to double.
- discrete_quantile<integer_round_nearest> // Round result to nearest integer.
- > mypolicy;
- //
- // Then define a new distribution that uses it:
- typedef boost::math::binomial_distribution<float, mypolicy> mybinom;
- // And now use it to get the quantile:
- int main()
- {
- cout << "quantile(mybinom(200, 0.25), 0.05) is: " <<
- quantile(mybinom(200, 0.25), 0.05) << endl;
- }
- //]
- /*
- Output:
- quantile(mybinom(200, 0.25), 0.05) is: 40
- */
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