 The algorithm avoids performing the square and square-root operations, instead using simple operations such as comparison, multiplication, and addition.Some choices of the α and β parameters of the algorithm allow the multiplication operation to be reduced to a simple shift of binary digits that is particularly well suited to implementation in high-speed digital circuitry.The approximation is expressed as

where formula_3 is the maximum absolute value of "a" and "b", and formula_4 is the minimum absolute value of "a" and "b".