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author | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
commit | f53a1ef582494458301b97bf6e546be52d7ff7e8 (patch) | |
tree | 7571b5cbcbd8a8f1dd1c966c9045b6cb69f0e295 /3rdParty/Boost/src/boost/next_prior.hpp | |
parent | 638345680d72ca6acaf123f2c8c1c391f696e371 (diff) | |
download | swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.zip swift-contrib-f53a1ef582494458301b97bf6e546be52d7ff7e8.tar.bz2 |
Moving submodule contents back.
Diffstat (limited to '3rdParty/Boost/src/boost/next_prior.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/next_prior.hpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/next_prior.hpp b/3rdParty/Boost/src/boost/next_prior.hpp new file mode 100644 index 0000000..e1d2e42 --- /dev/null +++ b/3rdParty/Boost/src/boost/next_prior.hpp @@ -0,0 +1,51 @@ +// Boost next_prior.hpp header file ---------------------------------------// + +// (C) Copyright Dave Abrahams and Daniel Walker 1999-2003. Distributed under the Boost +// Software License, Version 1.0. (See accompanying file +// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) + +// See http://www.boost.org/libs/utility for documentation. + +// Revision History +// 13 Dec 2003 Added next(x, n) and prior(x, n) (Daniel Walker) + +#ifndef BOOST_NEXT_PRIOR_HPP_INCLUDED +#define BOOST_NEXT_PRIOR_HPP_INCLUDED + +#include <iterator> + +namespace boost { + +// Helper functions for classes like bidirectional iterators not supporting +// operator+ and operator- +// +// Usage: +// const std::list<T>::iterator p = get_some_iterator(); +// const std::list<T>::iterator prev = boost::prior(p); +// const std::list<T>::iterator next = boost::next(prev, 2); + +// Contributed by Dave Abrahams + +template <class T> +inline T next(T x) { return ++x; } + +template <class T, class Distance> +inline T next(T x, Distance n) +{ + std::advance(x, n); + return x; +} + +template <class T> +inline T prior(T x) { return --x; } + +template <class T, class Distance> +inline T prior(T x, Distance n) +{ + std::advance(x, -n); + return x; +} + +} // namespace boost + +#endif // BOOST_NEXT_PRIOR_HPP_INCLUDED |