[Gretl-devel] Re: numerical overflow problem? (with $huge and int())

Am 02.12.22 um 14:38 schrieb Sven Schreiber: > Am 01.12.2022 um 19:25 schrieb Marcin Błażejowski: >> On 1.12.2022 17:51, Sven Schreiber wrote: >>> >>> ? eval int($huge) >>> -2.1474836e+009 >> >> Hmm, >> >> if ($huge==1e+100) I would't say it is an issue, since it's far >> beyond 32 bits integer. >> > I know this example was a bit ridiculous, but AFAIK nowhere in our > documentation does it say what the usable range of (pseudo-) integers > in gretl is. All I'm saying is that we need a sentence like "don't use > this function outside the range -2147483648 to 2147483647". And is > that even correct? Or are we implying an even smaller range? Btw, the actual range is -2147483648 to 2147483648. This works: <hansl assert(int(-$huge) == 2147483648) assert(int($huge) == -2147483648) </hansl> even though I still think the signs are wrong.