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$LOAD_PATH.unshift(File.expand_path(File.dirname(__FILE__) + '/../lib'))
require 'bench_press'
require 'distribution'
extend BenchPress
name 'calculate factorial vs looking on a Hash'
author 'Claudio Bustos'
date '2011-01-31'
summary "
Is better create a lookup table for factorial or just calculate it?
Distribution::MathExtension::SwingFactorial has a lookup table
for factorials n<20
"
reps 1000 # number of repetitions
measure 'Lookup' do
Math.factorial(19)
end
measure 'calculate' do
Distribution::MathExtension::SwingFactorial.naive_factorial(19)
end
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