Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2005-03-30
2009-10-20
Bullock, Jr., Lewis A (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S204000
Reexamination Certificate
active
07606850
ABSTRACT:
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 approximation of the binary number. Next, a subset of the fractional portion is utilized to generate an adjustment value βmfor the fractional portion. The numeric value k is then converted to a binary value representing an integer portion of the base-2 logarithm approximation of the binary number. Finally, the integer portion is added to the fractional portion along with the adjustment value βmfor the fractional portion to form the base-2 logarithm approximation of the binary number.
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Bullock, Jr. Lewis A
Dillon & Yudell LLP
Gooray Mark A
Lockheed Martin Corporation
Ng Antony P.
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