finished. Steve, this may help explain. https://play.golang.org/p/tcy1QFZb-Fp
On Thu, Feb 22, 2018 at 5:35 PM, Michael Jones <michael.jo...@gmail.com> wrote: > https://play.golang.org/p/0XRLg6-6uPk > > On Thu, Feb 22, 2018 at 1:09 PM, andrey mirtchovski <mirtchov...@gmail.com > > wrote: > >> in the first Printf "area" is truncated. try %.40f to see the real >> value, which is more like: >> >> 262256.4523014638689346611499786376953125 >> >> plugging that in as h2 will result in >> 39709429597.00000098280725069344043731689453125 (according to wolfram >> alpha) >> >> On Thu, Feb 22, 2018 at 1:32 PM, <steve_bagw...@sil.org> wrote: >> > >> > Hello Everyone, >> > >> > This looks like a Golang bug to me. What do you all think? >> > >> > I have this function ... >> > >> >> func getArea(base, side int64) float64 { >> >> var height, fSide, area float64 >> >> fSide = float64(side) >> >> halfBase := float64(base) / 2.0 >> >> height = math.Sqrt(fSide*fSide - halfBase*halfBase) >> >> area = halfBase * height >> >> fmt.Printf("halfBase: %f, height: %f, Area: %f\n", halfBase, height, >> area) >> > >> > >> >> >> >> hb2 := 151414.5 >> >> h2 := 262256.452301 >> >> fmt.Printf("Area 2: %f\n", hb2 * h2) >> > >> > >> >> >> >> return area >> >> } >> > >> > >> > When I call it with `result := getArea(302829, 302828)`, I get this >> output >> > ... >> > >> >> halfBase: 151414.500000, height: 262256.452301, Area: >> 39709429597.000000 >> >> Area 2: 39709429596.929764 >> > >> > >> > I could see how some kind of rounding could produce the first Area >> value. >> > But in that case, why wouldn't Area2 be rounded as well? >> > >> > -- >> > 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. >> > > > > -- > Michael T. Jones > michael.jo...@gmail.com > -- 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.
