On 8/23/12 12:42 PM, Ted Dunning wrote: > On Thu, Aug 23, 2012 at 3:00 PM, Phil Steitz <phil.ste...@gmail.com> wrote: > >> The problem is that contracts can often be written so that instances >> of 1) are turned into instances of 0). Gamma(-) is a great >> example. The singularities at negative integers could be viewed as >> making negative integer arguments "illegal" or "nonsense" from the >> API standpoint, or legitimate arguments for which no well-defined, >> representable value can be returned. Personally, I would prefer to >> get NaN back from this function and just point out the existence of >> the singularities in the javadoc. >> > So what do you think should happen from sqrt(-1) NaN > or log(0) -INF > or log(-2) NaN
Basically, I am happy with how java.lang.Math handles - and documents behavior - for these. Phil > ? > > Exception or NaN? > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
