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O(N*N) space and O(1) time BOOST_PP_TUPLE_ELEM()

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[SVN r14149]
This commit is contained in:
Vesa Karvonen
2002-06-16 08:06:36 +00:00
parent 54d0da5221
commit 8854c2c573
19 changed files with 81 additions and 276 deletions
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5
include/boost/preprocessor/if.hpp
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@ -15,7 +15,6 @@
#include <boost/preprocessor/detail/cat.hpp>
#include <boost/preprocessor/logical/bool.hpp>
#include <boost/preprocessor/tuple/elem.hpp>
/** <p>Expands to <code>THEN</code> if <code>COND != 0</code> and <code>ELSE</code> if
<code>COND == 0</code>.</p>
@ -34,5 +33,7 @@
<li><a href="../../test/preprocessor_test.cpp">preprocessor_test.cpp</a></li>
</ul>
*/
#define BOOST_PP_IF(COND,THEN,ELSE) BOOST_PP_DETAIL_CAT2(BOOST_PP_TUPLE2_ELEM,BOOST_PP_BOOL(COND))(ELSE,THEN)
#define BOOST_PP_IF(COND,THEN,ELSE) BOOST_PP_DETAIL_CAT2(BOOST_PP_IF,BOOST_PP_BOOL(COND))(ELSE,THEN)
#define BOOST_PP_IF0(E,T) E
#define BOOST_PP_IF1(E,T) T
#endif