forked from bartvdbraak/blender
281f236e6e
- on Ton's request use double versions of cos,sin,tan, sqrt etc. just like Solid in MT_Scalar #if defined (__sun) || defined (__sun__) || defined (__sparc) || defined (__APPLE__) - updated an url in the header of files
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) 2005 Erwin Coumans http://continuousphysics.com/Bullet/
|
|
*
|
|
* 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
|