Constructive reals in Go, anyone? :-) On 18 Aug 2017 17:50, "Michael Jones" <michael.jo...@gmail.com> wrote:
> Here is a minor musing from something that came up yesterday. > > Sometimes we see a real number expression as simple as... > > x*y/z > > ...and knowing from basic algebra that... > > (x*y)/z == x*(y/z) > > ...we might not expect much difference between the two in our code. Alas, > computer floating point does not involve real numbers, rather it uses an > approximation of them. If you will copy https://play.golang.org/ > p/IlDxtvx7IY to your computer, build and run it, (too much CPU for the > playground) you'll find that the order makes a difference. Or, you can just > remember this phrase, "multiply first, then divide." > > -- > Michael T. Jones > michael.jo...@gmail.com > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
