System, method, and apparatus for division coupled with...

Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed

Reexamination Certificate

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C708S551000

Reexamination Certificate

active

10414580

ABSTRACT:
A system, method, and apparatus for dividing and truncating a dividend by a divisor, wherein the magnitude of the divisor is a positive power of two, e.g., 2x, is presented herein. If the divisor is positive, the sign bit of the dividend is concatenated x times and added to the dividend. If the divisor is negative, the dividend is inverted, the sign bit of the inverted dividend is concatenated x times, and added to the inverted dividend. The sign bit of the divisor is also added to the sum and the result is right shifted x times. If the signs of the divisor and the dividend are the same, a zero is shifted into the most significant bit during each right shift. If the signs of the divisor and the dividend are different, the most-significant-bit (sign bit) of the result of addition is shifted into the most significant bit during each right shift.

REFERENCES:
patent: 4727506 (1988-02-01), Fling
patent: 5107453 (1992-04-01), Nomura
patent: 5365471 (1994-11-01), Sato
patent: 5754460 (1998-05-01), Tam

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