[#55853] ruby 1.9.3 p448 breaks ABI — V咜 Ondruch <v.ondruch@...>

Hi,

13 messages 2013/07/08

[#55951] [ruby-trunk - Bug #8625][Open] IO#read(len, buf) shortens buf even if data is not read actually — "no6v (Nobuhiro IMAI)" <nov@...>

10 messages 2013/07/11

[#55976] [ruby-trunk - Feature #8629][Open] Method#parameters should include the default value — "rosenfeld (Rodrigo Rosenfeld Rosas)" <rr.rosas@...>

13 messages 2013/07/12

[#55985] [ruby-trunk - Feature #8631][Open] Add a new method to ERB to allow assigning the local variables from a hash — "rosenfeld (Rodrigo Rosenfeld Rosas)" <rr.rosas@...>

19 messages 2013/07/12

[#56004] [ruby-trunk - Feature #8636][Open] Documentation hosting on ruby-lang.org — "zzak (Zachary Scott)" <e@...>

18 messages 2013/07/15

[#56019] [ruby-trunk - Feature #8639][Open] Add Queue#each — "avdi (Avdi Grimm)" <avdi@...>

15 messages 2013/07/15

[#56027] [CommonRuby - Feature #8640][Open] Add Time#elapsed to return nanoseconds since creation — "tenderlovemaking (Aaron Patterson)" <aaron@...>

24 messages 2013/07/15

[#56041] [CommonRuby - Feature #8643][Open] Add Binding.from_hash — "rosenfeld (Rodrigo Rosenfeld Rosas)" <rr.rosas@...>

26 messages 2013/07/16

[#56087] [ruby-trunk - Feature #8658][Open] Process.clock_gettime — "akr (Akira Tanaka)" <akr@...>

23 messages 2013/07/19

[#56096] [CommonRuby - Feature #8661][Open] Add option to print backstrace in reverse order(stack frames first & error last) — "gary4gar (Gaurish Sharma)" <gary4gar@...>

18 messages 2013/07/20

[#56193] [ruby-trunk - Bug #8693][Open] lambda invoked by yield acts as a proc with respect to return — "rits (First Last)" <redmine@...>

33 messages 2013/07/26

[#56274] [ruby-trunk - Bug #8709][Open] Dir.glob should return sorted file list — "tommorris (Tom Morris)" <tom@...>

19 messages 2013/07/30

[ruby-core:56101] Re: [ruby-trunk - Feature #8658][Open] Process.clock_gettime

From: Tanaka Akira <akr@...>
Date: 2013-07-21 07:55:58 UTC
List: ruby-core #56101
2013/7/21 "Martin J. Dst" <duerst@it.aoyama.ac.jp>:
>
> 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?

% ./ruby -ve 'p (2**62-1).class, (2**62).class'
ruby 2.1.0dev (2013-07-21 trunk 42095) [x86_64-linux]
Fixnum
Bignum

% ./ruby -ve 'p (2**30-1).class, (2**30).class'
ruby 2.1.0dev (2013-07-21 trunk 42095) [i686-linux]
Fixnum
Bignum

What's the problem?
-- 
Tanaka Akira

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