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/*
* Copyright (c) 2005 Erwin Coumans http://www.erwincoumans.com
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies.
* Erwin Coumans makes no representations about the suitability
* of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*/
#ifndef BU_ALGEBRAIC_POLYNOMIAL_SOLVER_H
#define BU_ALGEBRAIC_POLYNOMIAL_SOLVER_H
#include "BU_PolynomialSolverInterface.h"
/// BU_AlgebraicPolynomialSolver implements polynomial root finding by analytically solving algebraic equations.
/// Polynomials up to 4rd degree are supported, Cardano's formula is used for 3rd degree
class BU_AlgebraicPolynomialSolver : public BUM_PolynomialSolverInterface
{
public:
BU_AlgebraicPolynomialSolver() {};
int Solve2Quadratic(SimdScalar p, SimdScalar q);
int Solve2QuadraticFull(SimdScalar a,SimdScalar b, SimdScalar c);
int Solve3Cubic(SimdScalar lead, SimdScalar a, SimdScalar b, SimdScalar c);
int Solve4Quartic(SimdScalar lead, SimdScalar a, SimdScalar b, SimdScalar c, SimdScalar d);
SimdScalar GetRoot(int i) const
{
return m_roots[i];
}
private:
SimdScalar m_roots[4];
};
#endif //BU_ALGEBRAIC_POLYNOMIAL_SOLVER_H
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