[Core] Add Accessor for Table Derivatives

[matekelemen]

Add an Accessor that fetches the derivatives from a table instead of the values. Example use case is getting stiffnesses from a displacement-force table.

[AlejandroCornejo]

Do you think that we can generalize the original Table accessor to include your case? @RiccardoRossi

[RiccardoRossi]

Hi, i am not sure about how to achieve this without inducing a performance penalty...

@matekelemen how would you achieve that?

[RiccardoRossi]

Hi, i am not sure about how to achieve this without inducing a performance penalty...

@matekelemen how would you achieve that?

to answer myself, maybe we could template it in a "option" to be either get_value or get_derivative

[AlejandroCornejo]

Hi, i am not sure about how to achieve this without inducing a performance penalty... @matekelemen how would you achieve that?

to answer myself, maybe we could template it in a "option" to be either get_value or get_derivative

like

template <SizeType DerivativeOrder = 0>
GetValue()
{
    if constexpr (DerivativeOrder  == 0) {
        return table.GetValue();
    } else if constexpr  (DerivativeOrder  == 1)
     return table.GetFirstDerivative();
}

(disregard notation errors, just to get the point) ?

[rubenzorrilla]

Hi, i am not sure about how to achieve this without inducing a performance penalty... @matekelemen how would you achieve that?

to answer myself, maybe we could template it in a "option" to be either get_value or get_derivative

like

template <SizeType DerivativeOrder = 0>
GetValue()
{
    if constexpr (DerivativeOrder  == 0) {
        return table.GetValue();
    } else if constexpr  (DerivativeOrder  == 1)
     return table.GetFirstDerivative();
}

(disregard notation errors, just to get the point) ?

This will result in different GetValue methods when exporting to Python.

[AlejandroCornejo]

Hi, i am not sure about how to achieve this without inducing a performance penalty... @matekelemen how would you achieve that?

to answer myself, maybe we could template it in a "option" to be either get_value or get_derivative

like

template <SizeType DerivativeOrder = 0>
GetValue()
{
    if constexpr (DerivativeOrder  == 0) {
        return table.GetValue();
    } else if constexpr  (DerivativeOrder  == 1)
     return table.GetFirstDerivative();
}

(disregard notation errors, just to get the point) ?

This will result in different GetValue methods when exporting to Python.

yes indeed

[RiccardoRossi]

Looks ok to me

El lun, 24 jun 2024, 14:40, Alejandro Cornejo @.***> escribió:

Hi, i am not sure about how to achieve this without inducing a performance penalty... @matekelemen https://github.com/matekelemen how would you achieve that?

to answer myself, maybe we could template it in a "option" to be either get_value or get_derivative

like

template GetValue() { if constexpr (DerivativeOrder == 0) { return table.GetValue(); } else if constexpr (DerivativeOrder == 1) return table.GetFirstDerivative(); }

(disregard notation errors, just to get the point) ?

This will result in different GetValue methods when exporting to Python.

yes indeed

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