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Diffstat (limited to 'boost/vmd/is_number.hpp')
-rw-r--r-- | boost/vmd/is_number.hpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/boost/vmd/is_number.hpp b/boost/vmd/is_number.hpp new file mode 100644 index 0000000000..7bc66fa4f6 --- /dev/null +++ b/boost/vmd/is_number.hpp @@ -0,0 +1,52 @@ + +// (C) Copyright Edward Diener 2011-2015 +// 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). + +#if !defined(BOOST_VMD_IS_NUMBER_HPP) +#define BOOST_VMD_IS_NUMBER_HPP + +#include <boost/vmd/detail/setup.hpp> + +#if BOOST_PP_VARIADICS + +#include <boost/vmd/detail/is_number.hpp> + +/* + + The succeeding comments in this file are in doxygen format. + +*/ + +/** \file +*/ + +/** \def BOOST_VMD_IS_NUMBER(sequence) + + \brief Tests whether a sequence is a Boost PP number. + + The macro checks to see if a sequence is a Boost PP number. + A Boost PP number is a value from 0 to 256. + + sequence = a possible number + + returns = 1 if the sequence is a Boost PP number, + 0 if it is not. + + If the input is not a VMD data type this macro could lead to + a preprocessor error. This is because the macro + uses preprocessor concatenation to determine if the input + is a number once it is determined that the input does not + start with parenthesis. If the data being concatenated would + lead to an invalid preprocessor token the compiler can issue + a preprocessor error. + +*/ + +#define BOOST_VMD_IS_NUMBER(sequence) \ + BOOST_VMD_DETAIL_IS_NUMBER(sequence) \ +/**/ + +#endif /* BOOST_PP_VARIADICS */ +#endif /* BOOST_VMD_IS_NUMBER_HPP */ |