factor.h

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 *  Copyright  (c) 2006,  Michael Kazhdan and Matthew Bolitho,
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 * $Id: factor.h 5531 2012-04-08 09:14:33Z aichim $
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#ifndef PCL_POISSON_FACTOR_H_
#define PCL_POISSON_FACTOR_H_

#define PI 3.1415926535897932384
#define SQRT_3 1.7320508075688772935

namespace pcl {
  namespace poisson {

    double ArcTan2 (const double& y, const double& x);
    double Angle (const double in[2]);
    void Sqrt (const double in[2], double out[2]);
    void Add (const double in1[2], const double in2[2], double out[2]);
    void Subtract (const double in1[2], const double in2[2], double out[2]);
    void Multiply (const double in1[2], const double in2[2], double out[2]);
    void Divide (const double in1[2], const double in2[2], double out[2]);

    int Factor (double a1, double a0, double roots[1][2], const double& EPS);
    int Factor (double a2, double a1, double a0, double roots[2][2], const double& EPS);
    int Factor (double a3, double a2, double a1, double a0, double roots[3][2], const double& EPS);
    int Factor (double a4, double a3, double a2, double a1, double a0, double roots[4][2], const double& EPS);

    int Solve (const double* eqns, const double* values, double* solutions, const int& dim);
  }
}

#endif /* PCL_POISSON_FACTOR_H_ */