Thanks I had forgotten about j. and 12&o. analyzethedatanotthedrivel.org
> On Mar 21, 2023, at 09:53, Raul Miller <rauldmil...@gmail.com> wrote: > > Yes. > > https://en.wikipedia.org/wiki/Atan2 > > -- > Raul > >> On Mon, Mar 20, 2023 at 8:31 PM Clifford Reiter <reit...@lafayette.edu> >> wrote: >> >> Does atn2 differ from _3&o. ? >> >> _3 o. _ >> >> 1.5708 >> >> _3 o. __ >> >> _1.5708 >> >> _3 o. 0 >> >> 0 >> >> >> >> >>> On Mon, Mar 20, 2023 at 8:16 PM John Baker <bakerj...@gmail.com> wrote: >>> >>> While computing star rise, transit and set times I encountered a need for >>> an atn2 verb. This is basically a tweaked arctan verb that handles ratios >>> like (arctan a%b) when a and b might be 0. Atn2 is in FORTRAN libraries. I >>> ended up rolling my own j verb but surely something so standard must be >>> floating around. If anyone has any atn 2’s please post. I like to compare >>> implementations for stuff like this. >>> >>> Jdb >>> >>> analyzethedatanotthedrivel.org >>> ---------------------------------------------------------------------- >>> For information about J forums see http://www.jsoftware.com/forums.htm >>> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
