Re: When integers go bad

> I also think this is not optimal. I've had hard to find bugs with
> integer arithmetics because of this.
>
>> Hm, OK, well maybe I'm just spoilt by environments like Octave or
>> Matlab that give you inf when you go off the scale, which is a really
>> useful warning that you've hit the buffers! (Maybe they use floats
>> implicitly even for integers.)
>>
>> Thanks
>> Dan
>>
>>
>> 2008/2/26, James Harkins <jamshark70@...>:
>>> This is standard behavior for integer arithmetic. Keeping it simple,
>>>  if you have 8 bits only:
>>>
>>>  2r01111111 == 127
>>>  +1
>>>  ----
>>>  2r10000000 == -128
>>>
>>>  Actually, n - 1 works by addition. 5 - 1 = 5 + (-1) = 5 + (2^8 - 1)
>>>
>>>  2r00000101 + 2r11111111 = 2r00000100 or 4.
>>>
>>>  I think it's more a matter of being careful, or of .asFloat'ing
>>>  everything when the range might get very large.
>>>  hjh
>>>
>>>
>>>
>>>  On Tue, Feb 26, 2008 at 4:53 PM, Dan Stowell  
>>> <danstowell@...> wrote:
>>>> Hi -
>>>>
>>>> SC goes a bit strange when integers go off the scale:
>>>>
>>>>  1410889248 * 99;   // Results in -2055885216
>>>>
>>>> Is this as designed? Since it returns an Integer, it's pretty
>>>> dangerous since it can continue to be used in calculations and can
>>>> corrupt. Would be better if it returned inf, or perhaps even threw
>>>> some kind of exception. Is that feasible?
>>>
>>>
>>>
>>> --
>>>  James Harkins /// dewdrop world
>>>  jamshark70@...
>>>  http://www.dewdrop-world.net
>>>
>>>  "Come said the Muse,
>>>  Sing me a song no poet has yet chanted,
>>>  Sing me the universal."  -- Whitman
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>>
>>
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