From kasperdanielhansen at gmail.com  Sun May  7 20:40:02 2017
From: kasperdanielhansen at gmail.com (Kasper Daniel Hansen)
Date: Sun, 7 May 2017 14:40:02 -0400
Subject: [Rd] complex tests failure
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Great! Works for me on RHEL6.

Best,
Kasper

On Fri, May 5, 2017 at 9:23 AM, Tomas Kalibera <tomas.kalibera at gmail.com>
wrote:

> Thanks for the report, handled in configure in 72661 (R-devel).
> I'll also port to R-patched.
>
> Best
> Tomas
>
>
> On 05/04/2017 03:49 PM, Tomas Kalibera wrote:
>
>
> There is no way to control this at runtime.
> We will probably have to add a configure test.
>
> Best,
> Tomas
>
> On 05/04/2017 03:23 PM, Kasper Daniel Hansen wrote:
>
> Thanks.
>
> I assume there is no way to control this via. environment variables or
> configure settings?  Obviously that would be great for something like this
> which affects tests and seems to be a known problem for older C standard
> libraries.
>
> Best,
> Kasper
>
> On Thu, May 4, 2017 at 9:12 AM, Tomas Kalibera <tomas.kalibera at gmail.com>
> wrote:
>
>>
>> As a quick fix, you can undefine HAVE_CTANH in complex.c, somewhere after
>> including config.h
>> An internal substitute, which is implemented inside complex.c, will be
>> used.
>>
>> Best
>> Tomas
>>
>>
>>
>>
>> On 05/04/2017 02:57 PM, Kasper Daniel Hansen wrote:
>>
>>> For a while I have been getting that the complex tests fails on RHEL 6.
>>> The specific issue has to do with tanh (see below for full output from
>>> complex.Rout.fail).
>>>
>>> This is both with the stock compiler (GCC 4.4.7) and a compiler supplied
>>> through the conda project (GCC 4.8.5).  The compiler supplied through
>>> conda
>>> ends up linking R to certain system files, so the binary is not
>>> completely
>>> independent (although most dynamically linked libraries are coming from
>>> the
>>> conda installation).
>>>
>>> A search on R-devel reveals a discussion in April on an issue reported on
>>> Windows with a bug in tanh in old versions of the GNU C standard library;
>>> this seems relevant.  The discussion by Martin Maechler suggest "using
>>> R's
>>> internal substitute".  So how do I enable this?  Or does this requires
>>> updating the C standard library?
>>>
>>> ** From complex.Rout.fail
>>>
>>> stopifnot(identical(tanh(356+0i), 1+0i))
>>>>
>>> Error: identical(tanh(356 + (0+0i)), 1 + (0+0i)) is not TRUE
>>> In addition: Warning message:
>>> In tanh(356 + (0+0i)) : NaNs produced in function "tanh"
>>> Execution halted
>>>
>>> Best,
>>> Kasper
>>>
>>>         [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> R-devel at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>
>>
>>
>>
>
>
>

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[Rd] complex tests failure
Kasper Daniel Hansen