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pending stuff from Boost Graph Library

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[SVN r7704]
This commit is contained in:
Jeremy Siek
2000-09-18 08:24:47 +00:00
committed by Glen Fernandes
parent 0f228bcf5b
commit ee352dee03
2 changed files with 79 additions and 0 deletions
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12
include/boost/pending/cstddef.hpp Normal file
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// -*- C++ -*- forwarding header.
#ifndef BOOST_CSTDDEF_HPP
#define BOOST_CSTDDEF_HPP
#if defined(__sgi) && !defined(__GNUC__)
# include <stddef.h>
#else
# include <cstddef>
#endif
#endif

67
include/boost/pending/ct_if.hpp Normal file
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// (C) Copyright Jeremy Siek 2000. Permission to copy, use, modify, sell and
// distribute this software is granted provided this copyright notice appears
// in all copies. This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
// The ct_if implementation that avoids partial specialization is
// based on the IF class by Ulrich W. Eisenecker and Krzysztof
// Czarnecki.
#ifndef BOOST_CT_IF_HPP
#define BOOST_CT_IF_HPP
#include <boost/config.hpp>
namespace boost {
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template <int cond, class A, class B>
struct ct_if { typedef A type; };
template <class A, class B>
struct ct_if<0, A, B> { typedef B type; };
#else
namespace detail {
template <int condition, class A, class B> struct IF;
template <int condition> struct SlectSelector;
struct SelectFirstType;
struct SelectSecondType;
struct SelectFirstType {
template<class A, class B>
struct Template { typedef A type; };
};
struct SelectSecondType {
template<class A, class B>
struct Template { typedef B type; };
};
template<int condition>
struct SlectSelector {
typedef SelectFirstType type;
};
template <>
struct SlectSelector<0> {
typedef SelectSecondType type;
};
} // namespace detail
template<int condition, class A, class B>
struct ct_if
{
typedef typename detail::SlectSelector<condition>::type Selector;
typedef typename Selector::template Template<A, B>::type type;
};
#endif
} // namespace boost
#endif // BOOST_CT_IF_HPP