Initial commit

libs/math/tools/hypergeometric_dist_data.cpp

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