Added thirdparty: boost library

thirdparty/include/boost/vmd/seq/is_vmd_seq.hpp

@@ -0,0 +1,56 @@
+
+//  (C) Copyright Edward Diener 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_VMD_SEQ_HPP)
+#define BOOST_VMD_IS_VMD_SEQ_HPP
+
+#include <boost/vmd/detail/setup.hpp>
+
+#if BOOST_PP_VARIADICS
+
+#include <boost/preprocessor/control/iif.hpp>
+#include <boost/vmd/identity.hpp>
+#include <boost/vmd/is_empty.hpp>
+#include <boost/vmd/is_seq.hpp>
+
+/*
+
+  The succeeding comments in this file are in doxygen format.
+
+*/
+
+/** \file
+*/
+
+/** \def BOOST_VMD_IS_VMD_SEQ(sequence)
+
+    \brief Determines if a sequence is a VMD seq.
+
+    The macro checks that the sequence is a VMD seq.
+    A VMD seq, which may be a Boost PP seq or emptiness, is a superset of a Boost PP seq.
+    It returns 1 if it is a VMD seq, else if returns 0.
+    
+    sequence = a possible Boost PP seq
+
+    returns = 1 if it a VMD seq, else returns 0.
+    
+*/
+
+#define BOOST_VMD_IS_VMD_SEQ(sequence) \
+    BOOST_VMD_IDENTITY_RESULT \
+        ( \
+        BOOST_PP_IIF \
+            ( \
+            BOOST_VMD_IS_EMPTY(sequence), \
+            BOOST_VMD_IDENTITY(1), \
+            BOOST_VMD_IS_SEQ \
+            ) \
+        (sequence) \
+        ) \
+/**/
+
+#endif /* BOOST_PP_VARIADICS */
+#endif /* BOOST_VMD_IS_VMD_SEQ_HPP */