Circuitry and method for generating scaler products and sums of floating point numbers with maximum accuracy
CA 1187614 A · Owner: Kulisch, Ulrich · Inventors: Kulisch, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Circuitry and method for generating scalar products and sums of floating point numbers with maximum accuracy and circuitry and a method for electronic computers by which scalar products of floating point numbers of the type pi qi, .epsilon.S(b, ? , e1, e2) are summed with full precision in a fixed point representation by a summing unit and one or more accumulator registers with cells Ai j for storing of, codes of a base b having a length (2? +2?e1?+2e2) for fixed point representation and certain overflow positions. By control unit the mantissas of products are delivered depending on the value of the respective exponents into the summing unit. By another control unit rounding, operations (, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 21, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.