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ruby / benchmark / bm_app_mandelbrot.rb
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require 'complex'
 
def mandelbrot? z
  i = 0
  while i<100
    i+=1
    z = z * z
    return false if z.abs > 2
  end
  true
end
 
ary = []
 
(0..100).each{|dx|
  (0..100).each{|dy|
    x = dx / 50.0
    y = dy / 50.0
    c = Complex(x, y)
    ary << c if mandelbrot?(c)
  }
}