Dario Sassi
109 lines
4.0 KiB
C++
109 lines
4.0 KiB
C++
//----------------------------------------------------------------------------
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// EgalTech 2013-2014
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//----------------------------------------------------------------------------
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// File : ENkPolynomial.h Data : 12.01.14 Versione : 1.5a2
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// Contenuto : Funzioni per polinomi.
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//
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//
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//
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// Modifiche : 12.01.14 DS Creazione modulo.
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//
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//
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//----------------------------------------------------------------------------
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#pragma once
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//----------------------- Macro per import/export ----------------------------
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#undef ENK_EXPORT
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#if defined( I_AM_ENK) // da definirsi solo nella DLL
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#define ENK_EXPORT __declspec( dllexport)
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#else
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#define ENK_EXPORT __declspec( dllimport)
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#endif
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//---------------------------Include------------------------------------------
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#include "/EgtDev/Include/ENkCplxCollection.h"
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//----------------------------------------------------------------------------
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class Polynomial
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{
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public :
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ENK_EXPORT Polynomial( void) : m_nDegree( -1) {}
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ENK_EXPORT Polynomial( const Polynomial& polS)
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{ SetDegree( polS.m_nDegree) ;
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for ( int i = 0 ; i <= m_nDegree ; ++ i)
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m_Coeff[i] = polS.m_Coeff[i] ; }
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ENK_EXPORT bool SetDegree( int nDegree) ;
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ENK_EXPORT bool SetCoeff( int nPower, double dC) ;
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ENK_EXPORT bool Set( int nDegree, const DBLVECTOR& vC) ;
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ENK_EXPORT bool SetToConstant( double dC) ;
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ENK_EXPORT Polynomial& operator =( const Polynomial& polS)
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{ if ( &polS != this) {
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SetDegree( polS.m_nDegree) ;
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for ( int i = 0 ; i <= m_nDegree ; ++ i)
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m_Coeff[i] = polS.m_Coeff[i] ;}
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return *this ; }
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public :
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ENK_EXPORT int GetDegree( void) const { return m_nDegree ; }
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ENK_EXPORT double GetCoeff( int nPower) const
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{ if ( nPower < 0 || nPower > m_nDegree)
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return 0 ;
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return m_Coeff[nPower] ; }
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ENK_EXPORT Polynomial& operator +=( const Polynomial& polP) ;
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ENK_EXPORT Polynomial& operator -=( const Polynomial& polP) ;
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ENK_EXPORT Polynomial& operator *=( const Polynomial& polP) ;
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ENK_EXPORT void Derive( void) ;
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ENK_EXPORT void Derive( const Polynomial& polP) ;
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ENK_EXPORT void AdjustDegree( void) ;
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ENK_EXPORT double Evaluate( double dVal) ;
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ENK_EXPORT int FindRoots( DBLVECTOR& vdRoot) ;
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private :
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bool EnsureDegree( int nDegree) ;
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private :
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int m_nDegree ;
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DBLVECTOR m_Coeff ;
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} ;
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//----------------------------------------------------------------------------
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// Somma
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//----------------------------------------------------------------------------
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inline Polynomial
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operator+( const Polynomial& polP1, const Polynomial& polP2)
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{
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Polynomial polSumm = polP1 ;
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polSumm += polP2 ;
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return polSumm ;
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}
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//----------------------------------------------------------------------------
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// Differenza
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//----------------------------------------------------------------------------
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inline Polynomial
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operator-( const Polynomial& polP1, const Polynomial& polP2)
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{
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Polynomial polDiff = polP1 ;
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polDiff -= polP2 ;
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return polDiff ;
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}
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//----------------------------------------------------------------------------
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// Moltiplicazione
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//----------------------------------------------------------------------------
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inline Polynomial
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operator*( const Polynomial& polP1, const Polynomial& polP2)
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{
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Polynomial polMul = polP1 ;
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polMul *= polP2 ;
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return polMul ;
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}
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//----------------------------------------------------------------------------
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// Filtro sulle radici
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//----------------------------------------------------------------------------
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ENK_EXPORT int FilterMultipleAndOutOfRangeRoots( DBLVECTOR& vRoots, double dMin, double dMax, double dEps) ;
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