[Rd] complex tests failure
tomas.kalibera at gmail.com
Thu May 4 15:49:47 CEST 2017
There is no way to control this at runtime.
We will probably have to add a configure test.
On 05/04/2017 03:23 PM, Kasper Daniel Hansen wrote:
> 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.
> On Thu, May 4, 2017 at 9:12 AM, Tomas Kalibera
> <tomas.kalibera at gmail.com <mailto: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.
> 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
> 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
> 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
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