Processing system and method for minimum/maximum number determin

Details Processing system and method for minimum/maximum number determin Processing system and method for minimum/maximum number determin

1995-02-14

1996-05-07

Mai, Tan V.

Boots, shoes, and leggings

3401462, G06F 700, G06F 702

Patent

active

055153062

ABSTRACT:
A data processing system with an arithmetic processing unit (ALU) and control unit is disclosed, wherein the ALU includes a first and second carry circuit and multiplexing device. Two n-bit, 2's complement operands A and B are inputted into the ALU for minimum/maximum number determination. The first carry circuit outputs a first carry into a sign bit position for the operation A+B+0, and the second carry circuit outputs a second carry into a second sign bit position for the operation A+.about.B+1. Control means for receiving minimum, minimum magnitude, maximum, and maximum magnitude operations of A and B and the carry outputs of the carry circuits outputs a control signal to the multiplexing device to output either A or B from the ALU.

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Gourlay et al, "Circuit for Finding the Minimum or Maximum of a set of Binary Numbers," IBM Tech. Discl. Bull., vol. 25, No. 7A, Dec. 1982, pp. 3318-3320.

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