Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2006-01-31
2006-01-31
Malzahn, D. H. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S498000
Reexamination Certificate
active
06993549
ABSTRACT:
An extended exponent floating point unit performs an extended exponent floating point operation on a plurality of operands to produce a product of the plurality of operands. The extended exponent floating point unit groups the plurality of operands into at least one group, determines a plurality of scale factors for the plurality of operands, respectively, and provides a running sum of the plurality of scale factors. The extended exponent floating point unit further scales the plurality of operands to obtain a plurality of scaled operands, multiplies the plurality of scaled operands to obtain a group product, and scales the group product to obtain a scaled group product. The scaled group product is adjusted based on the running sum. The plurality of operands are grouped such that when all the plurality of scaled operands in the at least one group are multiplied an overflow or underflow will not occur.
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Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Malzahn D. H.
Sun Microsystems Inc.
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