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ratio

4.0.1
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This library allows you to use Rational numbers in Elixir, to enable exact calculations with all numbers big and small.

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ratio lib ratio numbers.ex
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lib/ratio/numbers.ex 

# Unary protocols:

defimpl Numbers.Protocols.Minus, for: Ratio do

  def minus(val) do

    Ratio.minus(val)

  end

end



defimpl Numbers.Protocols.Absolute, for: Ratio do

  def abs(val) do

    Ratio.abs(val)

  end

end



defimpl Numbers.Protocols.ToFloat, for: Ratio do

  def to_float(val) do

    Ratio.to_float(val)

  end

end



# Binary protocols:

defimpl Numbers.Protocols.Addition, for: Ratio do

  def add(lhs, rhs) do

    Ratio.add(lhs, rhs)

  end



  def add_id(_) do

    Ratio.new(0)

  end

end



defimpl Numbers.Protocols.Subtraction, for: Ratio do

  def sub(lhs, rhs) do

    Ratio.sub(lhs, rhs)

  end

end



defimpl Numbers.Protocols.Multiplication, for: Ratio do

  def mult(lhs, rhs) do

    Ratio.mult(lhs, rhs)

  end



  def mult_id(_) do

    Ratio.new(1)

  end

end



defimpl Numbers.Protocols.Division, for: Ratio do

  def div(lhs, rhs) do

    Ratio.div(lhs, rhs)

  end

end



defimpl Numbers.Protocols.Exponentiation, for: Ratio do

  def pow(lhs, integer_power) do

    Ratio.pow(lhs, integer_power)

  end

end