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.kalib...@gmail.com <mailto:tomas.kalib...@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@r-project.org <mailto:R-devel@r-project.org> mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > <https://stat.ethz.ch/mailman/listinfo/r-devel> > > > > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
