Re: win32 random number generator
Tom Lane <[email protected]> Mon, 22 Aug 2005 17:32:39 -0400
| Newsgroups | gmane.comp.db.postgresql.devel.win32 |
|---|---|
| Message-ID | <[email protected]> |
"Merlin Moncure" <[email protected]> writes: > Looks like this in lrand48(void): > //return ((long) _rand48_seed[2] << 15) + ((long) _rand48_seed[1] > 1); > is supposed to be this: > return (long)((unsigned long) _rand48_seed[2] << 15) + ((unsigned long) > _rand48_seed[1] >> 1); Hmm, _rand48_seed is unsigned short, so casting to either long or unsigned long should zero-extend, and then it doesn't matter whether the shifts think it's signed or not. In short, that shouldn't change the behavior unless your compiler is broken. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org