Factor.h

/*
Copyright (c) 2006, Michael Kazhdan and Matthew Bolitho
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
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