ceph/src/boost/boost/geometry/util/condition.hpp

   1 // Boost.Geometry
   2
   3 // Copyright (c) 2015 Oracle and/or its affiliates.
   4
   5 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
   6
   7 // Use, modification and distribution is subject to the Boost Software License,
   8 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 #ifndef BOOST_GEOMETRY_UTIL_CONDITION_HPP
  12 #define BOOST_GEOMETRY_UTIL_CONDITION_HPP
  13
  14
  15 #include <boost/config.hpp>
  16
  17
  18 // The macro defined in this file allows to suppress the MSVC
  19 // compiler warning C4127: conditional expression is constant
  20
  21 #ifdef BOOST_MSVC
  22
  23 // NOTE: The code commented out below contains an alternative implementation
  24 // of a macro using a free function. It was left here in case if in the future
  25 // version of MSVC for the code currently used in the macro implementation
  26 // the warning was generated.
  27
  28 //#ifndef DOXYGEN_NO_DETAIL
  29 //namespace boost { namespace geometry { namespace detail {
  30 //BOOST_FORCEINLINE bool condition(bool const b) { return b; }
  31 //}}} // boost::geometry::detail
  32 //#endif // DOXYGEN_NO_DETAIL
  33 //#define BOOST_GEOMETRY_CONDITION(CONDITION) boost::geometry::detail::condition(CONDITION)
  34
  35 #define BOOST_GEOMETRY_CONDITION(CONDITION) ((void)0, (CONDITION))
  36
  37 #else
  38
  39 #define BOOST_GEOMETRY_CONDITION(CONDITION) (CONDITION)
  40
  41 #endif
  42
  43
  44 #endif // BOOST_GEOMETRY_UTIL_CONDITION_HPP