Files
boost_preprocessor/include/boost/preprocessor/if.hpp
Vesa Karvonen d8b52a3a42 PREPROCESSOR -> PP. WHILE documented.
[SVN r12162]
2001-12-28 11:06:53 +00:00

39 lines
1.1 KiB
C++

#ifndef BOOST_PREPROCESSOR_IF_HPP
#define BOOST_PREPROCESSOR_IF_HPP
// Copyright (C) 2001
// Housemarque Oy
// http://www.housemarque.com
//
// Permission to copy, use, modify, sell and distribute this software is
// granted provided this copyright notice appears in all copies. This
// software is provided "as is" without express or implied warranty, and
// with no claim as to its suitability for any purpose.
// See http://www.boost.org for most recent version.
/*! \file
<a href="../../../../boost/preprocessor/if.hpp">Click here to see the header.</a>
*/
#include <boost/preprocessor/logical/bool.hpp>
//! Expands to T if C != 0 and E if C == 0.
/*!
BOOST_PP_IF() enables convenient generation of lists using
BOOST_PP_REPEAT().
*/
#define BOOST_PP_IF(C,T,E) BOOST_PP_IF_BOOL(BOOST_PP_BOOL(C),T,E)
#ifndef DOXYGEN_SHOULD_SKIP_THIS
#define BOOST_PP_IF_BOOL(C,T,E) BOOST_PP_IF_BOOL_DELAY(C,T,E)
#define BOOST_PP_IF_BOOL_DELAY(C,T,E) BOOST_PP_IF_BOOL##C(T,E)
#define BOOST_PP_IF_BOOL0(T,E) E
#define BOOST_PP_IF_BOOL1(T,E) T
#endif
//! Obsolete. Use BOOST_PP_IF().
#define BOOST_PREPROCESSOR_IF(C,T,E) BOOST_PP_IF(C,T,E)
#endif