87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
// (C) Copyright John Maddock 2007.
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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/spherical_harmonic.hpp>
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#include <fstream>
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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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float extern_val;
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// confuse the compilers optimiser, and force a truncation to float precision:
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float truncate_to_float(float const * pf)
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{
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extern_val = *pf;
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return *pf;
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}
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template<class T>
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boost::math::tuple<T, T, T, T, T, T> spherical_harmonic_data(T i)
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{
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static boost::mt19937 r;
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int n = real_cast<int>(floor(i));
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boost::uniform_int<> ui(0, (std::min)(n, 40));
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int m = ui(r);
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boost::uniform_real<float> ur(-2*constants::pi<float>(), 2*constants::pi<float>());
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float _theta = ur(r);
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float _phi = ur(r);
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T theta = truncate_to_float(&_theta);
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T phi = truncate_to_float(&_phi);
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T r1 = spherical_harmonic_r(n, m, theta, phi);
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T r2 = spherical_harmonic_i(n, m, theta, phi);
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return boost::math::make_tuple(n, m, theta, phi, r1, r2);
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}
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int main(int argc, char*argv [])
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{
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using namespace boost::math::tools;
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parameter_info<mp_t> arg1, arg2, arg3;
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test_data<mp_t> data;
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bool cont;
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std::string line;
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if(argc < 1)
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return 1;
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do{
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if(0 == get_user_parameter_info(arg1, "n"))
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return 1;
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arg1.type |= dummy_param;
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arg2.type |= dummy_param;
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arg3 = arg2;
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data.insert(&spherical_harmonic_data<mp_t>, arg1);
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std::cout << "Any more data [y/n]?";
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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cont = (line == "y");
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}while(cont);
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std::cout << "Enter name of test data file [default=spherical_harmonic.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 = "spherical_harmonic.ipp";
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std::ofstream ofs(line.c_str());
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line.erase(line.find('.'));
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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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