Re: [go-nuts] Working with Floating-Point numbers

2018-02-12 Thread Michael Jones
Do you have particular questions? The overall situation is that floating point arithmetic is good, but not like real numbers or symbolic algebra; it is its own world and respecting the details is important (NaNs, representability, tolerance in comparison, etc.) On Mon, Feb 12, 2018 at 10:24 AM,

Re: [go-nuts] Working with Floating-Point numbers

2018-02-12 Thread Ian Lance Taylor
On Mon, Feb 12, 2018 at 9:40 AM, go-question wrote: > > When working with Floating-point values in Go, what considerations need to > be made? > > The same for any other language? > > The Spec says that "Floating-point values are comparable and ordered" >

Re: [go-nuts] Working with Floating-Point numbers

2018-02-12 Thread Peter Weinberger
I would say it's the same as most languages. Go implements IEEE floating point, so any comparison with a NaN is false. On Mon, Feb 12, 2018 at 12:40 PM, go-question wrote: > When working with Floating-point values in Go, what considerations need to > be made? > >

[go-nuts] Working with Floating-Point numbers

2018-02-12 Thread go-question
When working with Floating-point values in Go, what considerations need to be made? The same for any other language? The Spec says that "Floating-point values are comparable and ordered" https://golang.org/ref/spec#Comparison_operators So is comparing by some epsilon value not needed? or only