phobos and 64-bit real, anybody testing?
Johannes Pfau via Digitalmars-d
digitalmars-d at puremagic.com
Mon Jan 26 12:04:45 PST 2015
Am Mon, 26 Jan 2015 08:49:56 -0800
schrieb Dan Olson <zans.is.for.cans at yahoo.com>:
> A question for the floating point experts. Do phobos unittests get
> run on any architectures with 64-bit reals? I would like to know if
> there are known failures.
>
> I have identified all the phobos unittest failures on ARMv7 iOS and
> commented out failing asserts so that the remainder of the module
> unittests could pass. An example where there are many failed tests is
> std.internal.math.gammafunction where a nan is produced but a valid
> value is expected. Other times the computed result is completely
> different from what is expected. Note that for ARM I am clearing
> "Flush to Zero" and "Default NaN" modes in fpscr which helps pass
> many other tests. Normally these modes are enabled for iOS. Also,
> iOS uses float-abi=softfp.
> --
> Dan
I run the tests for GDC on ARM/linux soft and hardfloat 64 bit. All
modules except gammafunction should pass. gammafunction was never
ported to 64bit reals and I asked about it multiple times on the
newsgroup but nobody cared. I also filed a bug report:
https://issues.dlang.org/show_bug.cgi?id=13032
So as far as I'm concerned gammafunction is unmaintained and broken :-(
However, other modules should work (at least with GDC as there's some
GDC-specific inline asm).
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