1 files changed, 75 insertions, 0 deletions
diff --git a/src/boost/libs/math/tools/tgamma_large_data.cpp b/src/boost/libs/math/tools/tgamma_large_data.cpp
new file mode 100644
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--- /dev/null
+++ b/src/boost/libs/math/tools/tgamma_large_data.cpp
@@ -0,0 +1,75 @@
+// Copyright John Maddock 2013.
+// 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)
+
+//[special_data_example
+
+#include <boost/multiprecision/mpfr.hpp>
+#include <boost/math/tools/test_data.hpp>
+#include <boost/test/included/prg_exec_monitor.hpp>
+#include <boost/math/tools/tuple.hpp>
+#include <fstream>
+
+using namespace boost::math::tools;
+using namespace boost::math;
+using namespace std;
+using namespace boost::multiprecision;
+
+typedef number<mpfr_float_backend<1000> > mp_type;
+
+
+boost::math::tuple<mp_type, mp_type, mp_type> generate(mp_type a)
+{
+   mp_type tg, lg;
+   mpfr_gamma(tg.backend().data(), a.backend().data(), GMP_RNDN);
+   mpfr_lngamma(lg.backend().data(), a.backend().data(), GMP_RNDN);
+   return boost::math::make_tuple(a, tg, lg);
+}
+
+int cpp_main(int argc, char*argv [])
+{
+   parameter_info<mp_type> arg1, arg2;
+   test_data<mp_type> data;
+
+   bool cont;
+   std::string line;
+
+   if(argc < 1)
+      return 1;
+
+   do{
+      //
+      // User interface which prompts for 
+      // range of input parameters:
+      //
+      if(0 == get_user_parameter_info(arg1, "a"))
+         return 1;
+      arg1.type |= dummy_param;
+
+      data.insert(&generate, arg1);
+
+      std::cout << "Any more data [y/n]?";
+      std::getline(std::cin, line);
+      boost::algorithm::trim(line);
+      cont = (line == "y");
+   }while(cont);
+   //
+   // Just need to write the results to a file:
+   //
+   std::cout << "Enter name of test data file [default=gamma.ipp]";
+   std::getline(std::cin, line);
+   boost::algorithm::trim(line);
+   if(line == "")
+      line = "gamma.ipp";
+   std::ofstream ofs(line.c_str());
+   line.erase(line.find('.'));
+   ofs << std::scientific << std::setprecision(500);
+   write_code(ofs, data, line.c_str());
+
+   return 0;
+}
+
+//]
+