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ruby--ruby/benchmark/bm_so_random.rb
kou a17cb167ea * benchmark/: add missing spaces around assignment operators (= and +=) for
consistency.
  Approved by ko1.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37192 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2012-10-15 12:53:12 +00:00

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Ruby

# from http://www.bagley.org/~doug/shootout/bench/random/random.ruby
IM = 139968.0
IA = 3877.0
IC = 29573.0
$last = 42.0
def gen_random(max)
(max * ($last = ($last * IA + IC) % IM)) / IM
end
N = 3_000_000
i = 0
while i<N
i +=1
gen_random(100.0)
end
# "%.9f" % gen_random(100.0)