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Re: [PATCH v2] [BZ 21130] ldbl-128: Fix y0 and y1 for -Inf input
- From: Joseph Myers <joseph at codesourcery dot com>
- To: "Gabriel F. T. Gomes" <gftg at linux dot vnet dot ibm dot com>
- Cc: <libc-alpha at sourceware dot org>
- Date: Fri, 10 Feb 2017 20:55:13 +0000
- Subject: Re: [PATCH v2] [BZ 21130] ldbl-128: Fix y0 and y1 for -Inf input
- Authentication-results: sourceware.org; auth=none
- References: <1486754895-29612-1-git-send-email-gftg@linux.vnet.ibm.com>
On Fri, 10 Feb 2017, Gabriel F. T. Gomes wrote:
> The Bessel functions of the second type (Yn) are not defined for
> negative input and should return NAN with the "invalid" exception
> raised, in these cases. However, current code checks for infinity and
> return zero, regardless of the sign. This error is exposed for long
> double when linking with -lieee. Without this flag, the error is not
> exposed, because the wrappers for these functions, which use
> __kernel_standard functionality, return the correct value.
>
> Tested for powerpc64le.
OK.
> [BZ 21130]
Note that there is a # before the bug number in the ChangeLog syntax,
"[BZ #21130]".
--
Joseph S. Myers
joseph@codesourcery.com