[Scilab-users] [Scilab-Dev] algebra conventions with integer types to be discussed

[Samuel Gougeon]

Le 19/09/2018 à 12:25, Samuel Gougeon a écrit :
> Le 19/09/2018 à 12:02, Stéphane Mottelet a écrit :
>> Le 19/09/2018 à 11:46, Samuel Gougeon a écrit :
>> .../...
>>>
>>> At first sight, Octave's result does not look more consistent than 
>>> Scilab's one.
>>> But following its own ceiling/flooring rules, yet it is consistent.
>> What is puzzling is that Scilab implements a *mix* of rules comming 
>> from different software. I am wondering about the true reason:
>>
>> Scilab:
>>
>> --> int8(-128)/int8(0)
>>  ans  =
>>
>>  -128
>
> This is in Scilab 6. In Scilab 6, int8(-%inf) has been set to the int8 
> floor, and int8(%inf) to the int8 ceil. It is more consistent than the 
> 5.5 behavior (and is now documented in the 6.0 branch).

Here is the Scilab 6.0.0 changelog in the int8 ... iuint64 help page for 
6.0.2:


Would you prefer fixing int32(%inf) in order to keep all answers to 0: 
this would avoid any saturating behavior for the infinite values as for 
finite ones ; or these new settings?


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