propagate_kep.hpp

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// ------------------------------------------------------------------------ //
// This source file is part of the 'ESA Advanced Concepts Team's            //
// Space Mechanics Toolbox' software.                                       //
//                                                                          //
// The source files are for research use only,                              //
// and are distributed WITHOUT ANY WARRANTY. Use them on your own risk.     //
//                                                                          //
// Copyright (c) 2004-2006 European Space Agency                            //
// ------------------------------------------------------------------------ //

#pragma once

#include "astro_functions.hpp"

void propagateKEP(const double *, const double *, double, double,
                  double *, double *);

void IC2par(const double *, const double *, double, double *);

void par2IC(const double *, double, double *, double *);

// Returns the cross product of the vectors X and Y.
// That is, z = X x Y.  X and Y must be 3 element
// vectors.
void cross(const double *, const double *, double *);