Merge commit '4ebe6417a5fce5f0994fc0c31bebf732be96a07c' as 'boost'

boost/libs/numeric/conversion/test/test_helpers2.cpp

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+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+//
+// Distributed under 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)
+//
+
+
+//
+// NOTE: This file is intended to be used ONLY by the test files
+//       from the Numeric Conversions Library
+//
+
+//
+// The following 'to_string' helpers are provided to give readable names
+// to the various enums used by the library.
+// NOTE: specializations of boost::lexical_cast<> were not used since some compilers had
+// trouble dealing with such specializations for different enumerations.
+//
+
+std::string to_string ( boost::numeric::int_float_mixture_enum arg )
+{
+  switch ( arg )
+  {
+    case boost::numeric::integral_to_integral : return "integral_to_integral" ;
+    case boost::numeric::integral_to_float    : return "integral_to_float" ;
+    case boost::numeric::float_to_integral    : return "float_to_integral" ;
+    case boost::numeric::float_to_float       : return "float_to_float" ;
+  }
+  return "(Unknown result!)" ;
+}
+
+
+std::string to_string ( boost::numeric::sign_mixture_enum arg )
+{
+  switch ( arg )
+  {
+    case boost::numeric::unsigned_to_unsigned : return "unsigned_to_unsigned" ;
+    case boost::numeric::signed_to_signed     : return "signed_to_signed" ;
+    case boost::numeric::signed_to_unsigned   : return "signed_to_unsigned" ;
+    case boost::numeric::unsigned_to_signed   : return "unsigned_to_signed" ;
+  }
+  return "(Unknown result!)" ;
+}
+
+std::string to_string ( boost::numeric::udt_builtin_mixture_enum arg )
+{
+  switch ( arg )
+  {
+    case boost::numeric::builtin_to_builtin : return "builtin_to_builtin" ;
+    case boost::numeric::builtin_to_udt     : return "builtin_to_udt" ;
+    case boost::numeric::udt_to_builtin     : return "udt_to_builtin" ;
+    case boost::numeric::udt_to_udt         : return "udt_to_udt" ;
+  }
+  return "(Unknown result!)" ;
+}
+
+//
+///////////////////////////////////////////////////////////////////////////////////////////////
+