[boost] Preprocessor: requirements on macro args

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2002-04-08 10:36:07

The docs for BOOST_PP_BOOL(X) say:

    Expands to 0 if X == 0 and 1 if X != 0.

So I expected:

    BOOST_PP_BOOL(const volatile) == 1

However, that's not the case. I think this problem is endemic in the
docs. How do I know which macros expect numeric arguments?

-Dave

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                  David Abrahams
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