Imported Upstream version 1.49.0upstream/1.49.0

1 files changed, 109 insertions, 0 deletions

diff --git a/libs/math/test/test_beta.hpp b/libs/math/test/test_beta.hpp
new file mode 100644
index 0000000000..8d70005592
--- /dev/null
+++ b/libs/math/test/test_beta.hpp
@@ -0,0 +1,109 @@
+// Copyright John Maddock 2006.
+// Copyright Paul A. Bristow 2007, 2009
+//  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)
+
+#ifdef _MSC_VER
+# pragma warning (disable : 4996) // POSIX name for this item is deprecated
+# pragma warning (disable : 4224) // nonstandard extension used : formal parameter 'arg' was previously defined as a type
+# pragma warning (disable : 4180) // qualifier applied to function type has no meaning; ignored
+#endif
+
+#include <boost/math/concepts/real_concept.hpp>
+#include <boost/test/test_exec_monitor.hpp>
+#include <boost/test/floating_point_comparison.hpp>
+#include <boost/math/special_functions/math_fwd.hpp>
+#include <boost/math/tools/stats.hpp>
+#include <boost/math/tools/test.hpp>
+#include <boost/math/constants/constants.hpp>
+#include <boost/type_traits/is_floating_point.hpp>
+#include <boost/array.hpp>
+#include "functor.hpp"
+
+#include "test_beta_hooks.hpp"
+#include "handle_test_result.hpp"
+
+#undef small // VC++ #defines small char !!!!!!
+
+#ifndef SC_
+#define SC_(x) static_cast<T>(BOOST_JOIN(x, L))
+#endif
+
+template <class T>
+void do_test_beta(const T& data, const char* type_name, const char* test_name)
+{
+   typedef typename T::value_type row_type;
+   typedef typename row_type::value_type value_type;
+
+   typedef value_type (*pg)(value_type, value_type);
+#if defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
+   pg funcp = boost::math::beta<value_type, value_type>;
+#else
+   pg funcp = boost::math::beta;
+#endif
+
+   boost::math::tools::test_result<value_type> result;
+
+   std::cout << "Testing " << test_name << " with type " << type_name
+      << "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n";
+
+   //
+   // test beta against data:
+   //
+   result = boost::math::tools::test(
+      data, 
+      bind_func(funcp, 0, 1), 
+      extract_result(2));
+   handle_test_result(result, data[result.worst()], result.worst(), type_name, "boost::math::beta", test_name);
+#ifdef TEST_OTHER
+   if(::boost::is_floating_point<value_type>::value){
+      funcp = other::beta;
+      result = boost::math::tools::test(
+         data, 
+         bind_func(funcp, 0, 1), 
+         extract_result(2));
+      print_test_result(result, data[result.worst()], result.worst(), type_name, "other::beta");
+   }
+#endif
+   std::cout << std::endl;
+}
+template <class T>
+void test_beta(T, const char* name)
+{
+   //
+   // The actual test data is rather verbose, so it's in a separate file
+   //
+   // The contents are as follows, each row of data contains
+   // three items, input value a, input value b and beta(a, b):
+   // 
+#  include "beta_small_data.ipp"
+
+   do_test_beta(beta_small_data, name, "Beta Function: Small Values");
+
+#  include "beta_med_data.ipp"
+
+   do_test_beta(beta_med_data, name, "Beta Function: Medium Values");
+
+#  include "beta_exp_data.ipp"
+
+   do_test_beta(beta_exp_data, name, "Beta Function: Divergent Values");
+}
+
+template <class T>
+void test_spots(T)
+{
+   //
+   // Basic sanity checks, tolerance is 20 epsilon expressed as a percentage:
+   //
+   T tolerance = boost::math::tools::epsilon<T>() * 20 * 100;
+   T small = boost::math::tools::epsilon<T>() / 1024;
+   BOOST_CHECK_CLOSE(::boost::math::beta(static_cast<T>(1), static_cast<T>(1)), static_cast<T>(1), tolerance);
+   BOOST_CHECK_CLOSE(::boost::math::beta(static_cast<T>(1), static_cast<T>(4)), static_cast<T>(0.25), tolerance);
+   BOOST_CHECK_CLOSE(::boost::math::beta(static_cast<T>(4), static_cast<T>(1)), static_cast<T>(0.25), tolerance);
+   BOOST_CHECK_CLOSE(::boost::math::beta(small, static_cast<T>(4)), 1/small, tolerance);
+   BOOST_CHECK_CLOSE(::boost::math::beta(static_cast<T>(4), small), 1/small, tolerance);
+   BOOST_CHECK_CLOSE(::boost::math::beta(static_cast<T>(4), static_cast<T>(20)), static_cast<T>(0.00002823263692828910220214568040654997176736L), tolerance);
+   BOOST_CHECK_CLOSE(::boost::math::beta(static_cast<T>(0.0125L), static_cast<T>(0.000023L)), static_cast<T>(43558.24045647538375006349016083320744662L), tolerance);
+}
+