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Re: long double test failures due to underflow exception getting set?
- From: Carlos O'Donell <carlos at redhat dot com>
- To: sellcey at cavium dot com, libc-alpha at sourceware dot org
- Date: Wed, 19 Jul 2017 20:58:18 -0400
- Subject: Re: long double test failures due to underflow exception getting set?
- Authentication-results: sourceware.org; auth=none
- References: <201707192134.v6JLYQXo004521@sellcey-dt.caveonetworks.com>
On 07/19/2017 05:34 PM, Steve Ellcey wrote:
> Is anyone else seeing these failures with the latest glibc sources?
> I am getting them on aarch64 (standard ToT sources) and was wondering
> if this is an aarch64 specific problem or a more generic bug. Since
> all the failures involve long double I don't think they are using
> aarch64 specific code, but I could be wrong.
>
> FAIL: math/test-ldouble-cexp
> FAIL: math/test-ldouble-exp
> FAIL: math/test-ldouble-finite-cexp
> FAIL: math/test-ldouble-finite-exp
>
> I think these failures are new and all of the failures listed are
> about the Underflow exception being set:
>
> I.e.
>
> testing long double (without inline functions)
> Failure: exp (-0x1p-10000): Exception "Underflow" set
> Failure: exp (-0x2p-16384): Exception "Underflow" set
> Failure: exp (-0x4p-16384): Exception "Underflow" set
> Failure: exp (-0x4p-16448): Exception "Underflow" set
> Failure: exp (-0x4p-16496): Exception "Underflow" set
> Failure: exp (-0x8p-16448): Exception "Underflow" set
Neither DJ nor Szabolcs's glibc 2.26 builds showed those failures:
https://sourceware.org/glibc/wiki/Release/2.26
--
Cheers,
Carlos.