2005-07-16 09:58:01 +00:00
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/*
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2005-10-30 06:44:42 +00:00
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* Copyright (c) 2005 Erwin Coumans http://continuousphysics.com/Bullet/
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2005-07-16 09:58:01 +00:00
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies.
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* Erwin Coumans makes no representations about the suitability
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* of this software for any purpose.
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* It is provided "as is" without express or implied warranty.
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*/
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#ifndef BU_ALGEBRAIC_POLYNOMIAL_SOLVER_H
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#define BU_ALGEBRAIC_POLYNOMIAL_SOLVER_H
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#include "BU_PolynomialSolverInterface.h"
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/// BU_AlgebraicPolynomialSolver implements polynomial root finding by analytically solving algebraic equations.
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/// Polynomials up to 4rd degree are supported, Cardano's formula is used for 3rd degree
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class BU_AlgebraicPolynomialSolver : public BUM_PolynomialSolverInterface
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{
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public:
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BU_AlgebraicPolynomialSolver() {};
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int Solve2Quadratic(SimdScalar p, SimdScalar q);
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int Solve2QuadraticFull(SimdScalar a,SimdScalar b, SimdScalar c);
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int Solve3Cubic(SimdScalar lead, SimdScalar a, SimdScalar b, SimdScalar c);
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int Solve4Quartic(SimdScalar lead, SimdScalar a, SimdScalar b, SimdScalar c, SimdScalar d);
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SimdScalar GetRoot(int i) const
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{
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return m_roots[i];
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}
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private:
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SimdScalar m_roots[4];
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};
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#endif //BU_ALGEBRAIC_POLYNOMIAL_SOLVER_H
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