minimization tests

minimization_spike.rb

require 'minimization'

# imita a calculadora de forma burra
def calculate(net_amount)
  net_amount * 1.1
end

# encapsula o processo de minimização
def minimize (min, max, desired)
  puts "minimizing between #{min} and #{max}. desired is #{desired}"
  min = Minimization::Brent.new(min, desired, proc {|net_amount|
    (calculate(net_amount) - max) ** 2
  })
  min.iterate
  puts "found #{min.x_minimum.round(2)}"
end


# define minimum e maximum de net amount
minimum = 2000
maximum = 8000

# roda a minimização várias vezes pra validar
minimize(minimum, maximum, 6000)
minimize(minimum, maximum, 7000)
minimize(minimum, maximum, 8000)
minimize(minimum, maximum, 9000)
minimize(minimum, maximum, 10000)