0j16":,.(100&*)4.57 4.34 4.44 457.0000000000000000
434.0000000000000000 444.0000000000000600 On Sat, May 16, 2020 at 12:34 AM 'Bo Jacoby' via Programming < programm...@jsoftware.com> wrote: > > (100&*)4.57 4.34 4.44 > > 457 434 444 > > +./(100&*)4.57 4.34 4.44 > 2.63185e_11 > > (+./&.(100&*))4.57 4.34 4.44 > 2.63185e_13 > > > > It doesn't work. > Thanks. > Bo. > > Den fredag den 15. maj 2020 20.58.47 CEST skrev Hauke Rehr < > hauke.r...@uni-jena.de>: > > my 2¢ > > the result is absolutely correct; > both Henry Rich and Devon McCormick showed why > > If you’re dealing with values with two decimal places > everywhere, either apply rounding after each operation, > or (better imho) work on 100-fold values and divide by > 100 in the very last step of your computation. > > you could also define your own data structure but then > you’re better off using x: in the first place. > > Either you want to deal with rationals (x:) or with > whole numbers (algorithm&.(100&*)). > > > Am 15.05.20 um 17:20 schrieb 'Bo Jacoby' via Programming: > > The expression > > 4.57+.(4.34+.4.44) > > > > > > should evaluate like this > > 4.34+.4.44 > > 0.02 > > > > 4.57+.0.02 > > 0.01 > > > > > > > > but it does evaluate to > > 5.39568e_12 > > > > > > which is a useless and incorrect result. > > = is tolerant, why isn't +. ? > > Thanks. > > Bo. Den fredag den 15. maj 2020 16.24.10 CEST skrev Henry Rich < > henryhr...@gmail.com>: > > > > What's wrong with it? > > > > 0j19 ": 4.57 4.34 4.44 > > 4.5700000000000002842 4.3399999999999998579 4.4400000000000003908 > > > > Henry Rich > > > > On 5/15/2020 10:17 AM, 'Bo Jacoby' via Programming wrote: > >> +./4.57 4.34 4.44 > >> 5.39568e_12 > >> > >> NB. this was not the correct answer. A bug? > >> > >> +./x:4.57 4.34 4.44 > >> > >> 1r100 > >> > >> NB. this was a work-around > >> Thanks! > >> Bo. > >> > >> > >> > >> > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > -- > ---------------------- > mail written using NEO > neo-layout.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
