colmap/lib/PoissonRecon/Factor.h

/*
Copyright (c) 2006, Michael Kazhdan and Matthew Bolitho
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are permitted provided that the following conditions are met:

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*/

#ifndef FACTOR_INCLUDED
#define FACTOR_INCLUDED

#define PI 3.1415926535897932384
#define SQRT_3 1.7320508075688772935

double ArcTan2(double y,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],double EPS);
int Factor(double a2,double a1,double a0,double roots[2][2],double EPS);
int Factor(double a3,double a2,double a1,double a0,double roots[3][2],double EPS);
int Factor(double a4,double a3,double a2,double a1,double a0,double roots[4][2],double EPS);

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

#endif // FACTOR_INCLUDED