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reinserted delay macros

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[SVN r14171]
This commit is contained in:
Paul Mensonides
2002-06-18 21:54:30 +00:00
parent 6a7259a48d
commit 37f823fd4a
3 changed files with 21 additions and 8 deletions
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6
include/boost/preprocessor/logical/bool.hpp
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@ -13,7 +13,8 @@
* See http://www.boost.org for most recent version.
*/
#include <boost/preprocessor/detail/cat.hpp>
// pm: not necessary if using manual delay
// #include <boost/preprocessor/detail/cat.hpp>
/** <p>Expands to <code>0</code> if <code>X == 0</code> and <code>1</code> if <code>X != 0</code>.</p>
@ -21,7 +22,8 @@
<p>For example, <code>BOOST_PP_BOOL(3)</code> expands to <code>1</code>.</p>
*/
#define BOOST_PP_BOOL(X) BOOST_PP_DETAIL_CAT2(BOOST_PP_BOOL,X)
#define BOOST_PP_BOOL(X) BOOST_PP_BOOL_DELAY(X) // original: BOOST_PP_DETAIL_CAT2(BOOST_PP_BOOL,X)
#define BOOST_PP_BOOL_DELAY(X) BOOST_PP_BOOL##X
/* BOOL can be implemented in O(1) tokens using saturated ADD & SUB.
* Unfortunately, it would result in significantly slower preprocessing.