Microprocessor with rounding dot product instruction

Details Microprocessor with rounding dot product instruction Microprocessor with rounding dot product instruction

2011-02-15

2011-02-15

Do, Chat C (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07890566

ABSTRACT:
A functional unit in a digital system is provided with a rounding DOT product instruction, wherein a product of first pair of elements is combined with a product of second pair of elements, the combined product is rounded, and the final result is stored in a destination. Rounding is performed by adding a rounding value to form an intermediate result, and then shifting the intermediate result right. A combined result is rounded to a fixed length shorter than the combined product. The products are combined by either addition or subtraction. An overflow resulting from the combination or from rounding is not reported.

REFERENCES:
patent: 5276634 (1994-01-01), Suzuki et al.
patent: 5559905 (1996-09-01), Greggain et al.
patent: 5666300 (1997-09-01), Adelman et al.
patent: 5835392 (1998-11-01), Dulong et al.
patent: 5854758 (1998-12-01), Kosuda et al.
patent: 5880984 (1999-03-01), Burchfiel et al.
patent: 5903479 (1999-05-01), Schwarz et al.
patent: 5963744 (1999-10-01), Slavenburg et al.
patent: 5983256 (1999-11-01), Peleg et al.
patent: 5995122 (1999-11-01), Hsieh et al.
patent: 6167419 (2000-12-01), Saishi et al.
patent: 6209012 (2001-03-01), Baudendistel
patent: 6243594 (2001-06-01), Silberfenig
patent: 6385634 (2002-05-01), Peleg et al.
patent: 6957244 (2005-10-01), Jou et al.
patent: 2003/0088601 (2003-05-01), Pitsianis et al.
Marc et al., Validated Roundngs of Dot Products by Sticky Accumulation, May 1997, IEEE Transactions on Computers, vol. 46, No. 5, pp. 623-629.
Philips Electronics North America Corp., Internet Article,TriMedia TM1300 Preliminary Data Book, Oct. 1999, First Draft, Preliminary Information, pp. A-83 to A-85.
Philips Electronics North America Corp., Internet Article,TriMedia TM1300 Preliminary Data Book, Oct. 1999, First Draft, Preliminary Information, pp. A-172 to A-173.

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