From: "Martin J. Dürst" <duerst@...>
Date: 2013-07-21T14:50:36+09:00
Subject: [ruby-core:56098] Re: [ruby-trunk - Feature #8658][Open] Process.clock_gettime

Hello Akira,

On 2013/07/19 21:32, akr (Akira Tanaka) wrote:

> On LP64 systems, Fixnum can represent 2**62-1.
> So (2**62-1)/(365.25*24*60*60*1e9)=146.1 years are representable
> without object allocation.
>
> On ILP32 and LLP64 systems, Fixnum can represent 2**30-1.
> So (2**30-1)/1e9=1.07 seconds are representable
> without object allocation.
> This means Bignum allocations are mostly required except
> the origin is very recent.

Don't your calculations ignore the fact that Fixnums are signed? Or do 
you have a way to use negative amounts of nanoseconds, too?

Regards,   Martin.