Re: Compiler warnings when dealing with huge integers

[Philipp Janda <siffiejoe@...>]

Am 26.06.2016 um 13:12 schröbte Mooffie:
> On 6/26/16, Sean Conner <sean@conman.org> wrote:
> > The safest course is to check that the result (as a double) fits in the
> > "safe" range and if not,
>
> While this was not at all my original concern, you helped me to decide
> that I should have a function dedicated to getting huge integers from
> the Lua stack. BTW, do you know of a simple way of checking that a
> floating number is in the safe integer range?

The constants `FLT_RADIX` (usually 2) and `DBL_MANT_DIG` (probably 53 in 
your case) can be found in the ISO C header `float.h`. There's also 
`FLT_MANT_DIG` (for float) and `LDBL_MANT_DIG` (for long double) in case 
you want to handle non-standard `lua_Number` types.

Philipp