#include <boost/preprocessor/identity.hpp>

#define BOOST_PP_IDENTITY(X)

Expands to X once invoked.

Designed to be used with BOOST_PP_IF(), when one of the clauses need to be invoked.

For example,

  BOOST_PP_IDENTITY(X)()

expands to:

  X

NOTE: If BOOST_PP_IDENTITY() is not invoked, the expansion will not be usable.

#define BOOST_PREPROCESSOR_IDENTITY(X)

Obsolete. Use BOOST_PP_IDENTITY().

(C) Copyright Housemarque Oy 2002

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