Re: exponent and modulus operator oddities on ppc

[Ralph Hempel <rhempel@...>]

Mike Pall wrote:

> As to why you're seeing differences between script and interactive
> execution: Lua folds constants while parsing and this indirectly
> calls pow() for the ^ operator. A script is parsed in one go, but
> the interactive prompt runs the parser for every line.
>
> Calling floor() on behalf of the % operator apparently screws up
> the FPU state. The non-constant folded ^ operator is thus always
> affected, but the constant-folded one is only affected if the
> parsing is done afterwards.

There's almost always someone here with the right combination of
expertise and the ability to explain the possible sources of the
problem.

And I learned something about the parser and the prompt too.

Thanks,

Ralph