From: Brian Candler <B.Candler@...>
Date: 2003-08-26T04:12:52+09:00
Subject: Re: Rite/Ruby2.0 & Ruby vs OCaml

On Tue, Aug 26, 2003 at 02:09:04AM +0900, Martin Weber wrote:
> On Tue, Aug 26, 2003 at 01:59:26AM +0900, Martin Weber wrote:
> > print_string(string_of_num(sum 100000));;
> *sigh* sorry. I've changed that to
> 
> print_string(string_of_num(sum 1000000));
> 
> before I ran the tests of course.

Cheers. And sorry I posted a buggy Ruby version too :-)

$ ocamlc -o sum1 nums.cma sum.ml
$ time ./sum1
500000500000
..
user    0m18.084s
sys     0m0.025s

$ ocamlopt -o sum2 nums.cmxa sum.ml
$ time ./sum2 
500000500000
..
user    0m5.672s
sys     0m0.008s

$ cat sum.rb
def sum(n)
  total = 0
  (1..n).each { |x| total += x }
 total
end

puts sum(1000000)
$ time ruby sum.rb
500000500000

..
user    0m12.044s
sys     0m0.055s

So it seems Ruby's bignums are in the same ballpark performance-wise as
Ocaml; and with the benefit of the code being far easier to write.

Cheers,

Brian.