On 23-09-2014, at 00:33, Wang, Zhu <zw...@connecticutchildrens.org> wrote:
> Hello, > > I submitted a package which used Fortran functions isnan and lgamma. However, > I was told that: > > isnan and lgamma are not Fortran 95 functions. > > I was asked to write 'cross-platform portable code' and so should not be > writing GNU extensions to Fortran. > > See http://cran.r-project.org/web/checks/check_results_mpath.html, which will > shortly show installation failures under Solaris. > > I will appreciate advice on how to replace these two functions to avoid > failure on some platforms. > I don’t know about lgamma. Instead of isnan you could use Lapack’s logical function disnan to test for NaN (it’s in lapack 3.4.2; I don’t know about earlier versions). Another way would be to write a C function using functions provided by R to test for NaN. That function should be declared with F77_NAME so that it can be called from a Fortran routine. I haven’t tried this so I don’t know if this would be foolproof or is the best way to do it.. Berend ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
