On Sun, Sep 11, 2016 at 11:40 AM, <xiiop...@gmail.com> wrote: > https://play.golang.org/p/tLSyUw1Ojq > > This operation is caught by the compiler > > a:=float32(1) / float32(0) > > > ok This has been asked before - but not with a satisfactory answer afaict > > The spec says ( https://golang.org/ref/spec#Arithmetic_operators ) The > result of a floating-point or complex division by zero is not specified > beyond the IEEE-754 standard; .. > > But the IEEE754 standard does specify behaviour, and the divide by zero has > a valid, defined result. > > I get the compiler is trying to catch some sort of error here - but I'm not > convinced it's ever helpful, and contradicts fully supporting the standard. > > Does anyone have a good defence of this compiler warning for floats?
Personally I think it was probably a mistake. The relevant part of the spec is https://golang.org/ref/spec#Constant_expressions where it says "The divisor of a constant division or remainder operation must not be zero." Ian -- 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.
