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runge_kutta_step_structs.hpp
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			#ifndef SPECMICP_ODEINT_RUNGEKUTTASTEPSTRUCTS_HPP
			#define SPECMICP_ODEINT_RUNGEKUTTASTEPSTRUCTS_HPP

			#include "common.hpp"

			namespace specmicp {
			namespace odeint {

			struct EmbeddedRungeKuttaStepOptions
			{
			scalar_t safety;
			scalar_t p_grow;
			scalar_t p_shrink;
			scalar_t errcon;
			scalar_t max_try;
			scalar_t eps;
			bool non_negativity;

			EmbeddedRungeKuttaStepOptions():
			safety(0.9),
			p_grow(-0.2),
			p_shrink(-0.25),
			errcon(1.89e-4),
			max_try(20),
			eps(1e-5),
			non_negativity(false)
			{}
			};


			} // end namespace odeint
			} // end namespace specmicp


			#endif// SPECMICP_ODEINT_RUNGEKUTTASTEPSTRUCTS_HPP