On Sun, Jul 30, 2017 at 10:40 AM, <mhipo1...@gmail.com> wrote:
>
> I just ran this code on my pc:
>
> package main
>
> import (
> "fmt"
> "math"
> )
>
> func main() {
> const ali = 4e20
> fmt.Println(math.Sin(ali))
> }
>
>
> and got this result:
>
> 1.3471173831553043e+258
>
> Why Sin result goes more than 1 ???????????????????
It's a bug. Consider filing a bug.
The current implementation of math.Sin says "Results may be
meaningless for x > 2**49 = 5.6e14." It would be nice to fix that if
it's not too expensive. Of course the results of Sin are fairly
meaningless for such large values in any case, as the values will lack
precision, but we may as well try to at least get a valid range.
Ian
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