1 | |
2 | // (C) Copyright Edward Diener 2011-2015 |
3 | // Use, modification and distribution are subject to the Boost Software License, |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
5 | // http://www.boost.org/LICENSE_1_0.txt). |
6 | |
7 | #if !defined(BOOST_VMD_IS_MULTI_HPP) |
8 | #define BOOST_VMD_IS_MULTI_HPP |
9 | |
10 | #include <boost/vmd/detail/setup.hpp> |
11 | |
12 | #if BOOST_PP_VARIADICS |
13 | |
14 | #include <boost/vmd/detail/sequence_arity.hpp> |
15 | |
16 | /* |
17 | |
18 | The succeeding comments in this file are in doxygen format. |
19 | |
20 | */ |
21 | |
22 | /** \file |
23 | */ |
24 | |
25 | /** \def BOOST_VMD_IS_MULTI(sequence) |
26 | |
27 | \brief Determines if the sequence has more than one element, referred to as a multi-element sequence. |
28 | |
29 | sequence = a sequence |
30 | |
31 | returns = 1 if the sequence is a multi-element sequence, else returns 0. |
32 | |
33 | If the size of a sequence is known it is faster comparing that size to be greater |
34 | than one to find out if the sequence is multi-element. But if the size of the |
35 | sequence is not known it is faster calling this macro than getting the size and |
36 | doing the previously mentioned comparison in order to determine if the sequence |
37 | is multi-element or not. |
38 | |
39 | */ |
40 | |
41 | #define BOOST_VMD_IS_MULTI(sequence) \ |
42 | BOOST_VMD_DETAIL_IS_MULTI(sequence) \ |
43 | /**/ |
44 | |
45 | /** \def BOOST_VMD_IS_MULTI_D(d,sequence) |
46 | |
47 | \brief Determines if the sequence has more than one element, referred to as a multi-element sequence. |
48 | |
49 | d = The next available BOOST_PP_WHILE iteration. |
50 | sequence = a sequence |
51 | |
52 | returns = 1 if the sequence is a multi-element sequence, else returns 0. |
53 | |
54 | If the size of a sequence is known it is faster comparing that size to be greater |
55 | than one to find out if the sequence is multi-element. But if the size of the |
56 | sequence is not known it is faster calling this macro than getting the size and |
57 | doing the previously mentioned comparison in order to determine if the sequence |
58 | is multi-element or not. |
59 | |
60 | */ |
61 | |
62 | #define BOOST_VMD_IS_MULTI_D(d,sequence) \ |
63 | BOOST_VMD_DETAIL_IS_MULTI_D(d,sequence) \ |
64 | /**/ |
65 | |
66 | #endif /* BOOST_PP_VARIADICS */ |
67 | #endif /* BOOST_VMD_IS_MULTI_HPP */ |
68 | |