Re: When integers go bad

>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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