MultiFab* levelbcdata in "setLevelBC" function when using Robin BC

[ZiyangHuang]

Hi,

I am trying to solve a linear system with Robin BC. From the definition of function "setLevelBC":

virtual void setLevelBC (int amrlev, const MultiFab* levelbcdata,
const MultiFab* robinbc_a = nullptr,
const MultiFab* robinbc_b = nullptr,
const MultiFab* robinbc_f = nullptr) = 0;

the Robin BC is well defined with input "robinbc_a", "robinbc_b", and "robinbc_f". I am not sure what data to input to "levebcdata".

Thanks!

[WeiqunZhang]

If all BCs are Robin, you can use nullptr as levelbcdata.

[ZiyangHuang]

Thanks a lot. I think "nullptr" can also be used when all BC's are periodic, correct?

[WeiqunZhang]

Right.