Casting double to ulong weirdness

[via Digitalmars-d]

On Tuesday, 25 August 2015 at 20:00:11 UTC, bachmeier wrote:
> to the next, we have reproducibility. In many cases though, 
> reproducibility doesn't mean exact reproducibility, at least in 
> the old days it didn't, due to floating point issues. You 
> generally want to allow for replication of the results using 
> other languages, so you have to allow for some differences.

You don't get portable results for some builtin float functions, 
but otherwise I believe the 2008 edition of IEEE is exact. Latest 
version of ECMAScript also use the 2008 version of IEEE.