On Jul 21, 2017, at 10:21 PM, Dan Wilcox <danomatika@gmail.com> wrote:It's most probably working because you are compiling on a newer system with a newer Visual Studio which has the newer math.h which has the function.Older versions pre-2012 do not, hence the current non-usage.On Jul 21, 2017, at 9:55 PM, Alexandre Torres Porres <porres@gmail.com> wrote:2017-07-21 16:44 GMT-03:00 Dan Wilcox <danomatika@gmail.com>:Those functions are in the windows math.h if you're using Visual Studio 2012 or greater.Hey, I just realized we have an [atanh] object for cyclone, I actually did that one myself, and I just tested, it's working on windows!here's the source https://github.com/porres/pd-cyclone/blob/master/cyclone_src/binaries/control/atanh.cso, definitely, those functions may exist for windows, not sure what building system you're using, but it may need an update