Floating point overflow

[RonLinu]

Hello Stefan!
I guess you probably know about this but here it is: TinyBASIC locks up when handling a number bigger than 1e38.
print 1e39
x = 1e39
will lock up the interpreter.
I admit this does not occur often, mostly because of a programming error.

On the other hand, underflow is handled correctly as it returns 'zero' which is ok.

Tested on an Arduino Mega 2560

[slviajero]

will look into this soon. i rewrote the number code anyway

…

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On Dec 5, 2022, at 10:24 PM, RonLinu ***@***.***> wrote:  Hello Stefan! I guess you probably know about this but here it is: TinyBASIC locks up when handling a number bigger than 1e38. print 1e39 x = 1e39 will lock up the interpreter. I admit this does not occur often, mostly because of a programming error. On the other hand, underflow is handled correctly as it returns 'zero' which is ok. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.

[slviajero]

Checked in new code in the TinybasicArduino folder of the repo that fixes the problem. Origin is mishandling of inf. The code I checked in is portable to gcc variants. Will ceck portability.

[slviajero]

Fixed now in the main code and tested against the main platforms. Handle inf and nan.