The Boost Preprocessing library is a library of macros, with support
- for preprocessor metaprogramming. The library supports both C++ and C
- compilation. It does not depend on any other Boost libraries and therefore
- may be used as a standalone library.
- An excerpt from
C++ Template Metaprogramming: Concepts, Tools, and
- Techniques from Boost and Beyond by Dave Abrahams and Aleksey
- Gurtovoy has been made
available.
- This excerpt contains a basic introduction to the Preprocessor library and
- preprocessor metaprogramming which may help users new to the library and
- users interested in seeing some of the facilities offered by the library.
+
The Boost Preprocessing library is a library of macros, with
+ support for preprocessor metaprogramming. The library supports
+ both C++ and C compilation. It does not depend on any other Boost
+ libraries and therefore may be used as a standalone library.
+
+ The library assumes that the compiler supports variadic macros.
+ Since variadic macros are a C99 or C++11 feature the library
+ ostensibly requires at least compilation at those C or C++
+ standard levels. A number of compilers support variadic macros at
+ a lower level, so it still may be possible using the library at
+ the C++03 compilation level, as long as strict C++03 compliance is
+ not enforced.
+
An excerpt from
C++ Template Metaprogramming: Concepts,
+ Tools, and Techniques from Boost and Beyond by Dave Abrahams
+ and Aleksey Gurtovoy has been made
available.
+ This excerpt contains a basic introduction to the Preprocessor
+ library and preprocessor metaprogramming which may help users new
+ to the library and users interested in seeing some of the
+ facilities offered by the library.
diff --git a/doc/topics/limitations.html b/doc/topics/limitations.html
index d9b0173..6b796a9 100644
--- a/doc/topics/limitations.html
+++ b/doc/topics/limitations.html
@@ -113,9 +113,8 @@
BOOST_PP_NOT_EQUAL depend on BOOST_PP_WHILE. So whatever is
the value for BOOST_PP_LIMIT_MAG is also the value for
BOOST_PP_LIMIT_WHILE.
-
BOOST_PP_LIMIT_TUPLE depends on BOOST_PP_LIMIT_VARIADIC when
- variadic macros are supported, since in that case array/tuple
- functionality often ends up calling variadic data
+ BOOST_PP_LIMIT_TUPLE depends on BOOST_PP_LIMIT_VARIADIC,
+ since array/tuple functionality often ends up calling variadic data
functionality. So while BOOST_PP_LIMIT_TUPLE can be smaller
than BOOST_PP_LIMIT_VARIADIC it can never be larger.
@@ -204,8 +203,7 @@
least equal to BOOST_PP_LIMIT_TUPLE if the value of
BOOST_PP_LIMIT_VARIADIC has not also been changed to be
greater than BOOST_PP_LIMIT_TUPLE. This is because
- tuples/arrays depend on variadic functionality when variadic
- macros are supported..
+ tuples/arrays depend on variadic functionality.
BOOST_PP_LIMIT_SEQ, BOOST_PP_LIMIT_FOR,
BOOST_PP_LIMIT_REPEAT, BOOST_PP_LIMIT_ITERATION: If you try to
set any of these values greater than the BOOST_PP_LIMIT_MAG