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Re: Fix ldbl-128ibm logl inaccuracy (bug 16386)
- From: Andreas Jaeger <aj at suse dot com>
- To: "Joseph S. Myers" <joseph at codesourcery dot com>, libc-alpha at sourceware dot org
- Cc: Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>
- Date: Thu, 02 Jan 2014 09:20:37 +0100
- Subject: Re: Fix ldbl-128ibm logl inaccuracy (bug 16386)
- Authentication-results: sourceware.org; auth=none
- References: <Pine dot LNX dot 4 dot 64 dot 1401012008320 dot 27585 at digraph dot polyomino dot org dot uk>
On 01/01/2014 09:09 PM, Joseph S. Myers wrote:
> This patch fixes bug 16386, ldbl-128ibm logl inaccuracy (with
> consequent inaccuracy for lgammal) for arguments where the high double
> is subnormal, which showed up while attempting to regenerate ulps for
> powerpc-nofpu for 2.19. The problem here is logic failing to allow
> for subnormals when calculating the exponent of the argument. Tested
> for powerpc-nofpu.
>
Thanks,
Andreas
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