Invention Grant
- Patent Title: Fused multiply-adder with booth-encoding
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Application No.: US14095474Application Date: 2013-12-03
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Publication No.: US09256397B2Publication Date: 2016-02-09
- Inventor: Maarten J. Boersma , Klaus M. Kroener , Christophe J. Layer , Silvia M. Mueller
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Russell Ng PLLC
- Agent Steven Bennett
- Main IPC: G06F7/483
- IPC: G06F7/483 ; G06F7/53 ; G06F7/544 ; G06F7/509 ; G06F7/533

Abstract:
A fused multiply-adder is disclosed. The fused multiply-adder includes a Booth encoder, a fraction multiplier, a carry corrector, and an adder. The Booth encoder initially encodes a first operand. The fraction multiplier multiplies the Booth-encoded first operand by a second operand to produce partial products, and then reduces the partial products into a set of redundant sum and carry vectors. The carry corrector then generates a carry correction factor for correcting the carry vectors. The adder adds the redundant sum and carry vectors and the carry correction factor to a third operand to yield a final result.
Public/Granted literature
- US20140095568A1 Fused Multiply-Adder with Booth-Encoding Public/Granted day:2014-04-03
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