absolute stack index

[Tobias Käs <tobias.kaes@...>]

Hello,

I need a function / macro to get the absolute stack index out of a possibly negative one.

Is this missing in the API or did I just not find it?

 

It would be quite useful since it ensures the index stays valid even after pushing something on the stack.

 

This way I can avoid some unnecessary stack manipulation with "lua_pushvalue", just to put it on a "known" stack index.

 

Thanks.