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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
// (C) Copyright John Maddock 2009.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//#define BOOST_MATH_INSTRUMENT
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#include <boost/math/distributions/hypergeometric.hpp>
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#include <boost/math/special_functions/trunc.hpp>
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#include <boost/math/constants/constants.hpp>
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#include <boost/lexical_cast.hpp>
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#include <boost/random/uniform_int.hpp>
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#include <fstream>
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#include <boost/math/tools/test_data.hpp>
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#include "mp_t.hpp"
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using namespace boost::math::tools;
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std::mt19937 rnd;
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struct hypergeometric_generator
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{
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boost::math::tuple<
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mp_t,
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mp_t,
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mp_t,
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mp_t,
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mp_t,
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mp_t,
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mp_t> operator()(mp_t rN, mp_t rr, mp_t rn)
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{
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using namespace std;
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using namespace boost;
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using namespace boost::math;
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if((rr > rN) || (rr < rn))
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throw std::domain_error("");
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try{
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int N = itrunc(rN);
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int r = itrunc(rr);
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int n = itrunc(rn);
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boost::uniform_int<> ui((std::max)(0, n + r - N), (std::min)(n, r));
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int k = ui(rnd);
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hypergeometric_distribution<mp_t> d(r, n, N);
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mp_t p = pdf(d, k);
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if((p == 1) || (p == 0))
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{
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// trivial case, don't clutter up our table with it:
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throw std::domain_error("");
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}
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mp_t c = cdf(d, k);
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mp_t cc = cdf(complement(d, k));
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std::cout << "N = " << N << " r = " << r << " n = " << n << " PDF = " << p << " CDF = " << c << " CCDF = " << cc << std::endl;
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return boost::math::make_tuple(r, n, N, k, p, c, cc);
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}
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catch(const std::exception& e)
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{
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std::cout << e.what() << std::endl;
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throw std::domain_error("");
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}
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}
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};
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int main(int argc, char*argv [])
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{
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std::string line;
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parameter_info<mp_t> arg1, arg2, arg3;
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test_data<mp_t> data;
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std::cout << "Welcome.\n"
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"This program will generate spot tests hypergeoemtric distribution:\n";
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arg1 = make_power_param(mp_t(0), 1, 21);
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arg2 = make_power_param(mp_t(0), 1, 21);
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arg3 = make_power_param(mp_t(0), 1, 21);
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arg1.type |= dummy_param;
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arg2.type |= dummy_param;
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arg3.type |= dummy_param;
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data.insert(hypergeometric_generator(), arg1, arg2, arg3);
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line = "hypergeometric_dist_data2.ipp";
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std::ofstream ofs(line.c_str());
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ofs << std::scientific << std::setprecision(40);
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write_code(ofs, data, "hypergeometric_dist_data2");
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return 0;
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}
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