LatticeCore.h

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/* This file is part of gbLAB.
 *
 * gbLAB is distributed without any warranty under the MIT License.
 */
 
 
#ifndef gbLAB_LatticeCore_h_
#define gbLAB_LatticeCore_h_
 
#include <iostream>
#include <cfloat> // FLT_EPSILON
#include <Eigen/Dense>
#include "../Math/IntegerMath.h"
 
namespace oILAB {
template <int dim> struct LatticeCore {
  static_assert(dim > 0, "dim must be > 0.");
  static constexpr double roundTol = FLT_EPSILON;
 
  typedef Eigen::Matrix<double, dim, 1> VectorDimD;
  typedef Eigen::Matrix<double, dim, dim> MatrixDimD;
  typedef long long int IntScalarType;
  typedef Eigen::Matrix<IntScalarType, dim, 1> VectorDimI;
  typedef Eigen::Matrix<IntScalarType, dim, dim> MatrixDimI;
 
  static VectorDimI rationalApproximation(VectorDimD v);
 
  static VectorDimI integerCoordinates(const VectorDimD &d,
                                       const MatrixDimD &invA);
    };
    } // namespace oILAB
#endif