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common.hpp
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			#ifndef SPECMICP_COMMON_HPP
			#define SPECMICP_COMMON_HPP

			#include <Eigen/Core>
			#include "boost/range/irange.hpp"

			namespace specmicp {

			//! type of an index
			using index_t = std::ptrdiff_t;
			using uindex_t = std::size_t;
			//! type of a scalar
			using scalar_t = double;

			// linear algebra
			//! A vector
			using Vector = Eigen::Matrix<scalar_t, Eigen::Dynamic, 1>;
			//! A matrix
			using Matrix = Eigen::Matrix<scalar_t, Eigen::Dynamic, Eigen::Dynamic>;

			//! \brief Range
			//!
			//! used to access all species of a certain types
			using range_t = boost::iterator_range<boost::range_detail::integer_iterator<index_t>>;


			// constants

			//! Id of an equation that is not an equation
			const index_t no_equation = -1;
			//! Id of a non-existant species
			const index_t no_species = -1;

			} // namespace specmicp


			// macros
			// ------

			#ifdef SPECMICP_NO_DEBUG
			#define specmicp_assert
			#else
			#define specmicp_assert(x) assert(x)
			#endif // SPECMICP_NO_DEBUG



			#endif // SPECMICP_COMMON_HPP