An apparatus for providing a base-2 logarithm approximation to a binary number is disclosed. A position k of the most significant bit within a binary number is located. Then, all bits that are less significant than position k within the binary number are assigned as a fractional portion of a base-2 logarithm...http://www.google.co.uk/patents/US7606850?utm_source=gb-gplus-sharePatent US7606850 - Method and apparatus for providing a base-2 logarithm approximation to a binary number
