quadraticEqnI.H

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// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
inline Foam::quadraticEqn::quadraticEqn(const Foam::zero)
:
    VectorSpace<quadraticEqn, scalar, 3>(Foam::zero{})
{}
 
 
inline Foam::quadraticEqn::quadraticEqn
(
    const scalar a,
    const scalar b,
    const scalar c
)
{
    this->v_[A] = a;
    this->v_[B] = b;
    this->v_[C] = c;
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
inline Foam::scalar Foam::quadraticEqn::value(const scalar x) const
{
    return x*(x*a() + b()) + c();
}
 
 
inline Foam::scalar Foam::quadraticEqn::derivative(const scalar x) const
{
    return x*2*a() + b();
}
 
 
inline Foam::scalar Foam::quadraticEqn::error(const scalar x) const
{
    return
        SMALL*mag(x)*(mag(x*a()) + mag(b()))
      + SMALL*(mag(x*(x*a() + b())) + mag(c()));
}
 
 
// ************************************************************************* //