Initial commit

libs/math/tools/carlson_ellint_data.cpp

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+// Copyright John Maddock 2006.
+// 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)
+
+#include <boost/math/tools/test_data.hpp>
+#include <boost/test/included/prg_exec_monitor.hpp>
+#include <boost/math/special_functions/ellint_3.hpp>
+#include <fstream>
+#include <boost/math/tools/test_data.hpp>
+#include <boost/random.hpp>
+#include "mp_t.hpp"
+
+float extern_val;
+// confuse the compilers optimiser, and force a truncation to float precision:
+float truncate_to_float(float const * pf)
+{
+   extern_val = *pf;
+   return *pf;
+}
+
+boost::math::tuple<mp_t, mp_t, mp_t, mp_t> generate_rf_data(mp_t n)
+{
+   static boost::mt19937 r;
+   boost::uniform_real<float> ur(0, 1);
+   boost::uniform_int<int> ui(-100, 100);
+   float x = ur(r);
+   x = ldexp(x, ui(r));
+   mp_t xr(truncate_to_float(&x));
+   float y = ur(r);
+   y = ldexp(y, ui(r));
+   mp_t yr(truncate_to_float(&y));
+   float z = ur(r);
+   z = ldexp(z, ui(r));
+   mp_t zr(truncate_to_float(&z));
+
+   mp_t result = boost::math::ellint_rf(xr, yr, zr);
+   return boost::math::make_tuple(xr, yr, zr, result);
+}
+
+boost::math::tuple<mp_t, mp_t, mp_t> generate_rc_data(mp_t n)
+{
+   static boost::mt19937 r;
+   boost::uniform_real<float> ur(0, 1);
+   boost::uniform_int<int> ui(-100, 100);
+   float x = ur(r);
+   x = ldexp(x, ui(r));
+   mp_t xr(truncate_to_float(&x));
+   float y = ur(r);
+   y = ldexp(y, ui(r));
+   mp_t yr(truncate_to_float(&y));
+
+   mp_t result = boost::math::ellint_rc(xr, yr);
+   return boost::math::make_tuple(xr, yr, result);
+}
+
+boost::math::tuple<mp_t, mp_t, mp_t, mp_t, mp_t> generate_rj_data(mp_t n)
+{
+   static boost::mt19937 r;
+   boost::uniform_real<float> ur(0, 1);
+   boost::uniform_real<float> nur(-1, 1);
+   boost::uniform_int<int> ui(-100, 100);
+   float x = ur(r);
+   x = ldexp(x, ui(r));
+   mp_t xr(truncate_to_float(&x));
+   float y = ur(r);
+   y = ldexp(y, ui(r));
+   mp_t yr(truncate_to_float(&y));
+   float z = ur(r);
+   z = ldexp(z, ui(r));
+   mp_t zr(truncate_to_float(&z));
+   float p = nur(r);
+   p = ldexp(p, ui(r));
+   mp_t pr(truncate_to_float(&p));
+
+   boost::math::ellint_rj(x, y, z, p);
+
+   mp_t result = boost::math::ellint_rj(xr, yr, zr, pr);
+   return boost::math::make_tuple(xr, yr, zr, pr, result);
+}
+
+boost::math::tuple<mp_t, mp_t, mp_t, mp_t> generate_rd_data(mp_t n)
+{
+   static boost::mt19937 r;
+   boost::uniform_real<float> ur(0, 1);
+   boost::uniform_int<int> ui(-100, 100);
+   float x = ur(r);
+   x = ldexp(x, ui(r));
+   mp_t xr(truncate_to_float(&x));
+   float y = ur(r);
+   y = ldexp(y, ui(r));
+   mp_t yr(truncate_to_float(&y));
+   float z = ur(r);
+   z = ldexp(z, ui(r));
+   mp_t zr(truncate_to_float(&z));
+
+   mp_t result = boost::math::ellint_rd(xr, yr, zr);
+   return boost::math::make_tuple(xr, yr, zr, result);
+}
+
+int cpp_main(int argc, char*argv [])
+{
+   using namespace boost::math::tools;
+
+   parameter_info<mp_t> arg1, arg2;
+   test_data<mp_t> data;
+
+   bool cont;
+   std::string line;
+
+   if(argc < 1)
+      return 1;
+
+   do{
+      int count;
+      std::cout << "Number of points: ";
+      std::cin >> count;
+      
+      arg1 = make_periodic_param(mp_t(0), mp_t(1), count);
+      arg1.type |= dummy_param;
+
+      //
+      // Change this next line to get the R variant you want:
+      //
+      data.insert(&generate_rd_data, arg1);
+
+      std::cout << "Any more data [y/n]?";
+      std::getline(std::cin, line);
+      boost::algorithm::trim(line);
+      cont = (line == "y");
+   }while(cont);
+
+   std::cout << "Enter name of test data file [default=ellint_rf_data.ipp]";
+   std::getline(std::cin, line);
+   boost::algorithm::trim(line);
+   if(line == "")
+      line = "ellint_rf_data.ipp";
+   std::ofstream ofs(line.c_str());
+   line.erase(line.find('.'));
+   ofs << std::scientific << std::setprecision(40);
+   write_code(ofs, data, line.c_str());
+
+   return 0;
+}
+
+