AnalyticalLinear2D Functor Syntax Query

[achodankar]

Hello Developers,
I have a question regarding the analyticallinear2D functor. I don’t understand how is the expression formed by passing the three parameters to the rho functor. What does each parameter represent?

AnalyticalLinear2D<T,T> rho( -p0/lx*invCs2<T,DESCRIPTOR>(), 0, p0*invCs2<T,DESCRIPTOR>()+1 );

Code snippet:

template <typename T, typename S>
AnalyticalLinear2D<T,S>::AnalyticalLinear2D(T a, T b, T c)
: AnalyticalF2D<T,S>(1), _a(a), _b(b), _c(c)
{
this->getName() = “linear”;
}

I understand this might be a trivial question. I would really appreciate your help in this matter.

Thank you.

Yours sincerely,

Abhijeet C.

[jjessberger]

Hello Abhijeet,

The three arguments are the coefficients of the desired linear function. This (and their particular role) can be seen in the implementation of the AnalyticalLinear2D<T,S>::operator() method (src/functors/analytical/analyticalF.hh::395):
> output[0]=_a*x[0] + _b*x[1] + _c;

Yours,
Julius J.

[achodankar]

Hello Julius,
Thank you for your prompt response. I understand it now.

Thank you.

Yours sincerely,

Abhijeet C.

[Author]

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