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d5960de3db
* Fix case where b is a negative integer and z is also negative. Add tests etc. Fixes: https://github.com/boostorg/math/issues/982.
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
// (C) Copyright John Maddock 2023.
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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_MAX_SERIES_ITERATION_POLICY 10000000
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#define BOOST_MATH_USE_MPFR
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#include "mp_t.hpp"
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#include <boost/math/special_functions/hypergeometric_1F1.hpp>
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#include <boost/math/special_functions/hypergeometric_pFq.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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using namespace boost::math::tools;
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using namespace boost::math;
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using namespace std;
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struct hypergeometric_1f1_gen
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{
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mp_t operator()(mp_t arg1, mp_t arg2, mp_t z)
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{
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boost::multiprecision::mpfr_float a1(arg1), a2(arg2), a3(z), r;
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r = boost::math::hypergeometric_pFq_precision({ a1 }, { a2 }, a3, 50);
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return mp_t(r);
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}
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};
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int main(int, char* [])
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{
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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 for 1F1 with negative integer arguments:\n";
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std::string line;
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bool cont;
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random_ns::mt19937 rnd;
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random_ns::uniform_real_distribution<float> ur_a(0, 20);
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for (int i = -4; i > -100000; i *= 7)
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{
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arg1 = make_single_param(mp_t(i));
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arg2 = make_single_param(mp_t(-100004));
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arg3 = make_single_param(mp_t(ur_a(rnd)));
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data.insert(hypergeometric_1f1_gen(), arg1, arg2, arg3);
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arg3.z1 = -arg3.z1;
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data.insert(hypergeometric_1f1_gen(), arg1, arg2, arg3);
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}
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for (int i = -4; i > -100000; i *= 7)
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{
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arg1 = make_single_param(mp_t(i));
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arg2 = make_single_param(mp_t(mp_t(i) - 3));
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arg3 = make_single_param(mp_t(ur_a(rnd)));
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data.insert(hypergeometric_1f1_gen(), arg1, arg2, arg3);
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arg3.z1 = -arg3.z1;
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data.insert(hypergeometric_1f1_gen(), arg1, arg2, arg3);
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}
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std::cout << "Enter name of test data file [default=hypergeometric_1f1_neg_int.ipp]";
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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 = "hypergeometric_1f1_neg_int.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, line.c_str());
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return 0;
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}
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