#!/usr/bin/ruby

# デュアルコア有効性テストプログラム
# 2007.9.23 野田篤司 
# 使いかた：
# $ ./testDualCore03.rb -1　：シングルコアで計算
# $ ./testDualCore03.rb 　　：デュアルコアで計算

id = 0
while args = ARGV.shift do
 id = args.to_i()
end
n = 100000000
if id == 0
  puts Time.now
  cal1 = open("|ruby testDualCore03.rb 1","r+")
  cal1.close_write
  cal2 = open("|ruby testDualCore03.rb 2","r+")
  cal2.close_write
  d1 = cal1.readlines.to_s.to_f
  puts d1
  cal1.close_read
  d2 = cal2.readlines.to_s.to_f
  puts d2
  cal2.close_read
  puts d1 + d2
  puts Time.now
elsif id == 1
  a = 4.0
  i = 3
  while i <= n do 
    a -= 4.0 / i
    i += 4
  end
  puts a
elsif id == 2
  b = 0.0
  j = 5
  while j <= n do 
    b += 4.0 / j
    j += 4
  end
  puts b
else
  puts Time.now
  a = 4.0
  i = 3
  while i <= n do 
    a -= 4.0 / i
    i += 4
  end
  b = 0.0
  j = 5
  while j <= n do 
    b += 4.0 / j
    j += 4
  end
  puts a + b
  puts Time.now
end