Complex

From RubySpec

This class implements complex numbers for ruby. Here is an example(in irb):

 require 'complex'
 one = Complex.new(5,5) # 5+5i
 two = Complex.new(6,5) # 6+5i
 print one+two  # 11+10i
 print one-two  # -1+0i
 print one*two  # 5+55i
 print one/two  # 0i