Re: FPE with using >INT_MAX numbers in Lua

[Shmuel Zeigerman <shmuz@...>]

Luiz Henrique de Figueiredo wrote:
> > If in one's C code, SIGFPEs are enabled for invalid floating point operations (with fpsetmask(FP_X_INV) or feenableexcept(FE_INVALID) or
> [...]
> > perhaps Lua needs to set those exceptions off when it begins parsing
> > and revert their state when it finishes parsing.
>
> Lua uses C89 and so has no access to C99 floating point exception handling.
> Perhaps you can disable exceptions before calling Lua.

lua_number2int (that triggers exceptions) is not C89, it is a macro 
calling assembler instructions. Temporary exception disabling (that the 
original poster suggests) can be accomplished via assembler either.

--
Shmuel