Re: Re: [GENERAL] +/- Inf for float8's
От | Peter Eisentraut |
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Тема | Re: Re: [GENERAL] +/- Inf for float8's |
Дата | |
Msg-id | Pine.LNX.4.30.0106022243150.23690-100000@peter.localdomain обсуждение исходный текст |
Ответ на | Re: Re: [GENERAL] +/- Inf for float8's (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Re: [GENERAL] +/- Inf for float8's
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Список | pgsql-hackers |
Tom Lane writes: > [ continuing a discussion from last August ] [I was *just* thinking about this. Funny.] > I believe that's not a problem anymore. The current form of the float > comparison functions will perform sorting and comparisons according to > the sequence > > -infinity < normal values < infinity < NaN < NULL I was thinking about making NaN equivalent to NULL. That would give consistency in ordering, and probably also in arithmetic. Additionally, if the platform supports it we ought to make the Invalid Operation FP exception (which yields NaN) configurable: either get NULL or get an error. -- Peter Eisentraut peter_e@gmx.net http://funkturm.homeip.net/~peter
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