class Float

# File lib/float.rb, line 7
def ceil2(exp = 0)
 multiplier = 10 ** exp
 ((self * multiplier).ceil).to_f/multiplier.to_f
end

# File lib/float.rb, line 2
def floor2(exp = 0)
 multiplier = 10 ** exp
 ((self * multiplier).floor).to_f/multiplier.to_f
end