Math Gist

gistfile1.txt

require 'benchmark'

n = 100000000

Benchmark.bm do |benchmark|
  benchmark.report do
    n.times { 2 + 2 } # Fastest Addition
  end
  benchmark.report do
    n.times { 2.+ 2 } # Slowest Addition
  end
  benchmark.report do
    n.times { 2.+(2) }
  end
  benchmark.report do
    n.times { 2 * 2 } # Fastest Multiplication
  end
  benchmark.report do
    n.times { 2.* 2 }
  end
  benchmark.report do
    n.times { 2.*(2) } # Slowest Multiplication
  end
  benchmark.report do
    n.times { 2 ** 2 }
  end
  benchmark.report do
    n.times { 2.** 2 } # Fastest Exponent
  end
  benchmark.report do
    n.times { 2.**(2) } # Slowest Exponent
  end
end

       user     system      total        real
   5.930000   0.010000   5.940000 (  5.936177)
   6.190000   0.000000   6.190000 (  6.196271)
   6.010000   0.000000   6.010000 (  6.018421)
   7.770000   0.010000   7.780000 (  7.773181)
   7.770000   0.000000   7.770000 (  7.786711)
   7.790000   0.010000   7.800000 (  7.807730)
  10.380000   0.010000  10.390000 ( 10.391489)
  10.370000   0.020000  10.390000 ( 10.391462)
  10.580000   0.010000  10.590000 ( 10.620809)