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68 lines
2.1 KiB
C++
68 lines
2.1 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_MULTI_HPP)
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#define BOOST_VMD_IS_MULTI_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/sequence_arity.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_MULTI(sequence)
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\brief Determines if the sequence has more than one element, referred to as a multi-element sequence.
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sequence = a sequence
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returns = 1 if the sequence is a multi-element sequence, else returns 0.
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If the size of a sequence is known it is faster comparing that size to be greater
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than one to find out if the sequence is multi-element. But if the size of the
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sequence is not known it is faster calling this macro than getting the size and
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doing the previously mentioned comparison in order to determine if the sequence
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is multi-element or not.
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*/
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#define BOOST_VMD_IS_MULTI(sequence) \
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BOOST_VMD_DETAIL_IS_MULTI(sequence) \
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/**/
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/** \def BOOST_VMD_IS_MULTI_D(d,sequence)
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\brief Determines if the sequence has more than one element, referred to as a multi-element sequence.
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d = The next available BOOST_PP_WHILE iteration.
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sequence = a sequence
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returns = 1 if the sequence is a multi-element sequence, else returns 0.
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If the size of a sequence is known it is faster comparing that size to be greater
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than one to find out if the sequence is multi-element. But if the size of the
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sequence is not known it is faster calling this macro than getting the size and
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doing the previously mentioned comparison in order to determine if the sequence
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is multi-element or not.
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*/
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#define BOOST_VMD_IS_MULTI_D(d,sequence) \
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BOOST_VMD_DETAIL_IS_MULTI_D(d,sequence) \
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/**/
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#endif /* BOOST_PP_VARIADICS */
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#endif /* BOOST_VMD_IS_MULTI_HPP */
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