[Numpy-discussion] Solaris Sparc build broken
Charles R Harris
charlesr.harris at gmail.com
Mon Nov 9 00:16:25 EST 2009
On Sun, Nov 8, 2009 at 10:11 PM, Charles R Harris <charlesr.harris at gmail.com
> On Sun, Nov 8, 2009 at 9:43 PM, David Cournapeau <cournape at gmail.com>wrote:
>> On Mon, Nov 9, 2009 at 12:49 PM, Charles R Harris
>> <charlesr.harris at gmail.com> wrote:
>> > Umm, PPC doesn't have ieee quad, it is an amalgam of two doubles.
>> Good catch ! I added a new type define for this case, with the
>> corresponding union.
>> I have quickly tested it under rosetta, and it seems that
>> npy_nextafterl gives a reasonable answer for the few values I have
>> tried (i.e. the same as for a double).
> I don't remember how PPC does it's arithmetic with the two doubles, but one
> holds small values that are added to the other double, so I don't think it
> can be just like a double in some circumstances. What's rosetta?
OTOH, it does look like extended precision on the PPC mac might be doubles:
The libm functions declared in math.h provide mathematical
library func-tions functions
tions in single-, double-, and extended-precision IEEE-754 floating-point
formats on Intel macs, and in single- and double-precision IEEE-754
floating-point formats on PowerPC macs.
Is that what you see?
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