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69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
// (C) Copyright John Maddock 2006.
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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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#include <boost/math/special_functions/gamma.hpp>
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#include <boost/math/special_functions/beta.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 <fstream>
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#include <map>
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#include <boost/math/tools/test_data.hpp>
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#include <boost/random.hpp>
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#include "mp_t.hpp"
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using namespace boost::math::tools;
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using namespace boost::math;
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using namespace std;
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#include <libs/math/test/table_type.hpp>
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#define T double
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#define SC_(x) static_cast<double>(x)
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#include <libs/math/test/ibeta_int_data.ipp>
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int main(int, char* [])
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{
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std::cout << "Enter name of test data file [default=ibeta_derivative_data.ipp]";
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std::string line;
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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if(line == "")
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line = "ibeta_derivative_data.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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ofs <<
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"// (C) Copyright John Maddock 2006.\n"
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"// Use, modification and distribution are subject to the\n"
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"// Boost Software License, Version 1.0. (See accompanying file\n"
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"// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n"
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"\n\n"
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"static const boost::array<boost::array<typename table_type<T>::type, 4>, " << ibeta_int_data.size() << "> ibeta_derivative_small_data = { {\n";
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for(unsigned i = 0; i < ibeta_int_data.size(); ++i)
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{
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mp_t a(ibeta_int_data[i][0]);
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mp_t b(ibeta_int_data[i][1]);
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mp_t x(ibeta_int_data[i][2]);
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std::cout << a << std::endl;
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std::cout << b << std::endl;
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std::cout << x << std::endl;
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mp_t bet = exp(boost::math::lgamma(a) + boost::math::lgamma(b) - boost::math::lgamma(a + b));
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mp_t d = pow(1 - x, b - 1) * pow(x, a - 1) / bet;
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ofs << "{{ SC_(" << a << "), SC_(" << b << "), SC_(" << x << "), SC_(" << d << ") }}\n";
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}
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ofs << "}};\n\n";
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return 0;
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}
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