On 13/12/18 9:12 AM, Alan Braslau wrote: > On Thu, 13 Dec 2018 09:02:05 +1300 > Henri Menke <henrime...@gmail.com> wrote: > >> On 13/12/18 8:56 AM, Alan Braslau wrote: >>> On Wed, 12 Dec 2018 20:42:56 +0100 >>> "Mikael P. Sundqvist" <mic...@gmail.com> wrote: >>>> >>>> Thanks, Alan! That looks very promising. I could not make it work, >>>> though, and I guess that is because I use linux and do not know >>>> what to change for what. I installed libcerf but I assume >>>> something else is missing. In any case, this is one of the things >>>> it would be nice to have, at least as a module. I have no idea on >>>> how to realize that, though. >>>> >>>> /Mikael >>> >>> You likely also need to install libffi - I do not know what package >>> this is on your flavor of linux - Luigi is the ffi specialist! >> >> FFI is integrated in LuaTeX >= 1.03 >> >> In you example you load libcerf but you are not using it. What you >> are actually using are the Bessel function from the C Standard >> library. GCC includes them as a GNU extension. >> https://www.gnu.org/software/libc/manual/html_node/Special-Functions.html#index-j0 >> Your example also works if you remove libcerf (at least for me on >> Linux). > > I had stripped-down my example, for in fact I use the voigt and error > functions from libcerf, and yes the Bessel functions from the standard > C math library. One should note, by the way, that the C math library is > more or less complete depending on the system, and not everyone uses > gcc nor gnu...
Sorry, my mistake, the Bessel functions are not a GCC extension but POSIX standard functions. http://pubs.opengroup.org/onlinepubs/9699919799/functions/j0.html Since TeX Live is always built on a POSIX platform (MSYS2 on Windows), you can expect j0 etc. to be available in LuaTeX. > > Alan > ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
