High-efficiency saturating operator

Details High-efficiency saturating operator High-efficiency saturating operator

2007-02-13

2007-02-13

Malzahn, David H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

10360831

ABSTRACT:
A method for determining, by means of a circuit, a result sk+2of an operation of the typesk+2=(sk⁢+•⁢ak)⁢+•⁢ak+1where sk, ak, and ak+1are fractional signed operands and symbol+•represents a saturating addition operation, comprising: a step of calculation of three sums representative of a possible value of the result, and a step of selection of one of said three sums according to overflows having occurred in the sum calculation. At least one step of the method uses the positive part and the negative part of at least one of the operands.

REFERENCES:
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patent: 6499046 (2002-12-01), Nguyen et al.
patent: 6519620 (2003-02-01), Nguyen et al.

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