Re: [GENERAL] random() function produces wrong range
| От | Stephan Szabo |
|---|---|
| Тема | Re: [GENERAL] random() function produces wrong range |
| Дата | |
| Msg-id | Pine.BSF.4.10.10008011248400.25036-100000@megazone23.bigpanda.com обсуждение исходный текст |
| Ответ на | Re: [GENERAL] random() function produces wrong range (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-hackers |
On Tue, 1 Aug 2000, Tom Lane wrote: > Stephan Szabo <sszabo@megazone23.bigpanda.com> writes: > > Actually, on my machines, both man pages for rand() and random() say > > they return values between 0 and RAND_MAX (whether that's true or not > > is another matter). In my case RAND_MAX==INT_MAX so the change wouldn't > > be a problem, but it might be problematic on some of the 64 bit machines. > > Oh, that's interesting. What platform do you use? If RAND_MAX applies > to random() on some machines that'd probably explain why the code is > written like it is. But on my box (HPUX) the rand() function is old > and crufty and considerably different from random(). That's from a pair of linux boxes, although checking on a FreeBSD box a friend has, his boxes man pages show the range as explicitly 0 to 2^31-1 as your box does.
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