Tom, can you clarify why -0 is valid. Is it for _small_ near zero values that are indeed negative?
--------------------------------------------------------------------------- Tom Lane wrote: > Patrick Welche <[EMAIL PROTECTED]> writes: > > On Tue, Nov 19, 2002 at 10:53:59AM -0500, Tom Lane wrote: > >> Presumably that was put in because it was correct on i86. How do you > >> feel about changing that entry to > >> geometry/i.86-.*-netbsd=geometry-positive-zeros > >> rather than deleting it? > > > I was under the impression until now that it was geometry.out for i86 using > > the libm387 math library, and geometry-positive-zeros for everyone else, but > > this acorn32 box is also giving geometry.out, so I must be wrong, in fact > > I've just tried not using libm387 on an i386, and it gives geometry.out > > too, so we might as well delete it... > > Hm. Another possibility is that the existing resultmap entry is correct > for some prior netbsd version, but is correct no longer. > > AFAIK, all modern hardware claims compliance to the IEEE floating-point > arithmetic standard, so failure to print minus zero as minus zero is > very likely to be a software issue not hardware. That suggests strongly > that the issue is netbsd version (specifically libc version) and not the > hardware platform. > > If we knew which netbsd version the behavior changed at, we could put in > some version-specific resultmap entries. But unless someone can provide > datapoints on that, I guess we'll just have to update resultmap to match > recent versions --- ie, take out the entry pointing to > geometry-positive-zeros. > > Any objections out there? > > regards, tom lane > > ---------------------------(end of broadcast)--------------------------- > TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED]) > -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org
