sequence.hpp
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	//===-- rosa/support/sequence.hpp -------------------------------- C++ --===//
	//
	// The RoSA Framework
	//
	//===----------------------------------------------------------------------===//
	///
	/// \file rosa/support/sequence.hpp
	///
	/// \author David Juhasz (david.juhasz@tuwien.ac.at)
	///
	/// \date 2017
	///
	/// \brief Template facilities to statically generate a sequence of numbers.
	///
	//===----------------------------------------------------------------------===//

	#ifndef ROSA_SUPPORT_SEQUENCE_HPP
	#define ROSA_SUPPORT_SEQUENCE_HPP

	#include <cstddef>

	namespace rosa {

	/// \defgroup Seq Implementation of rosa::Seq
	///
	/// Facility to statically generate sequences of numbers.
	///
	///@{

	/// Template with an empty struct to store a sequence of numbers in compile time
	/// as template arguments.
	///
	/// Generate a sequence of numbers from `0` up to (including) `(N - 1)` like
	/// \code
	/// typename GenSeq<N>::Type
	/// \endcode
	template <size_t...> struct Seq {};

	/// Sequence generator, the general case when counting down by extending the
	/// sequence.
	template <size_t N, size_t... S> struct GenSeq : GenSeq<N - 1, N - 1, S...> {};

	/// Sequence generator, the terminal case when storing the generated sequence
	/// into \c Seq.
	template <size_t... S> struct GenSeq<0, S...> { using Type = Seq<S...>; };

	///@}

	} // End namespace rosa

	#endif // ROSA_SUPPORT_SEQUENCE_HPP