Le 19/09/2018 à 11:24, Stéphane Mottelet a écrit :
Le 19/09/2018 à 11:17, Samuel Gougeon a écrit :
The current implementation is not incoherent.
However, there are still bugs, and when trying to solve them, the
question of incoherence raises. See e.g :
--> int8(-128)/int8(-1)
ans =
-128
There is no bug here. The division yields 128, that then is wrapped,
what yields -128, since in Scilab after the int8 127, 127+1 goes to -128
instead of ceiling to 127 like in Octave:
>> int8(-128)/int8(-1)
ans = 127
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.
With both possible rules, wrapping or saturating ones, results may
appear as inconsistent. But for this example, it is not the case.
Samuel
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