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require 'bench_press'
require 'bigdecimal'
extend BenchPress
name 'Float vs Rational power'
author 'Claudio Bustos'
date '2011-02-02'
summary "
On ruby, the maximum size of a float is #{Float::MAX}.
With Rational, we can raise to integer numbers and surpass Float maximum.
What is the speed reduction using Rational?"
reps 1000 # number of repetitions
int = 10
rat = 10.quo(1)
bd = BigDecimal('10')
measure 'Using float pow' do
int**307
end
measure 'Using rational' do
rat**307
end
measure 'Using big decimal pow' do
bd**307
end
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