53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
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// (C) Copyright Edward Diener 2011-2015
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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#if !defined(BOOST_VMD_IS_NUMBER_HPP)
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#define BOOST_VMD_IS_NUMBER_HPP
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#include <boost/vmd/detail/setup.hpp>
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#if BOOST_PP_VARIADICS
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#include <boost/vmd/detail/is_number.hpp>
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/*
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The succeeding comments in this file are in doxygen format.
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*/
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/** \file
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*/
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/** \def BOOST_VMD_IS_NUMBER(sequence)
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\brief Tests whether a sequence is a Boost PP number.
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The macro checks to see if a sequence is a Boost PP number.
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A Boost PP number is a value from 0 to 256.
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sequence = a possible number
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returns = 1 if the sequence is a Boost PP number,
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0 if it is not.
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If the input is not a VMD data type this macro could lead to
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a preprocessor error. This is because the macro
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uses preprocessor concatenation to determine if the input
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is a number once it is determined that the input does not
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start with parenthesis. If the data being concatenated would
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lead to an invalid preprocessor token the compiler can issue
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a preprocessor error.
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*/
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#define BOOST_VMD_IS_NUMBER(sequence) \
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BOOST_VMD_DETAIL_IS_NUMBER(sequence) \
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/**/
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#endif /* BOOST_PP_VARIADICS */
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#endif /* BOOST_VMD_IS_NUMBER_HPP */
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