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#!/usr/bin/env ruby
def pi(i)
pi= 0
num= 4.0
den= 1
plus= true
while den < 5e7
if plus
pi+= num/den
plus= false
else
pi-= num/den
plus= true
end
den+= 2
end
puts "#{pi} -> #{i}"
end
threads=[]
count=ARGV.shift || 1
puts "Using #{count} threads"
t= Time.new
count.to_i.times do |i|
threads << Thread.new{pi(i)}
end
threads.each do |j|
j.join
end
t= (Time.new- t)* 1e3
tps= Integer(count) * 1e3 / t
puts "\nTiempo total (ms) -> %.0f" % t
puts "Threads por segundo -> %.1f" % tps
puts "Total de threads ejecutadas -> #{count}"
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