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3rdparty/boost_1_81_0/boost/geometry/util/condition.hpp 1.31 KB
63e88f80   Hu Chunming   提交三方库
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  // Boost.Geometry
  
  // Copyright (c) 2015 Oracle and/or its affiliates.
  
  // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  
  // Use, modification and distribution is 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)
  
  #ifndef BOOST_GEOMETRY_UTIL_CONDITION_HPP
  #define BOOST_GEOMETRY_UTIL_CONDITION_HPP
  
  
  #include <boost/config.hpp>
  
  
  // The macro defined in this file allows to suppress the MSVC
  // compiler warning C4127: conditional expression is constant
  
  #ifdef BOOST_MSVC
  
  // NOTE: The code commented out below contains an alternative implementation
  // of a macro using a free function. It was left here in case if in the future
  // version of MSVC for the code currently used in the macro implementation
  // the warning was generated.
  
  //#ifndef DOXYGEN_NO_DETAIL
  //namespace boost { namespace geometry { namespace detail {
  //BOOST_FORCEINLINE bool condition(bool const b) { return b; }
  //}}} // boost::geometry::detail
  //#endif // DOXYGEN_NO_DETAIL
  //#define BOOST_GEOMETRY_CONDITION(CONDITION) boost::geometry::detail::condition(CONDITION)
  
  #define BOOST_GEOMETRY_CONDITION(CONDITION) ((void)0, (CONDITION))
  
  #else
  
  #define BOOST_GEOMETRY_CONDITION(CONDITION) (CONDITION)
  
  #endif
  
  
  #endif // BOOST_GEOMETRY_UTIL_CONDITION_HPP