Electrical computers and digital processing systems: processing – Processing control – Arithmetic operation instruction processing
Patent
1997-12-18
2000-04-11
Ellis, Richard L.
Electrical computers and digital processing systems: processing
Processing control
Arithmetic operation instruction processing
708496, 708513, G06F 9302
Patent
active
06049865&
ABSTRACT:
A floating point unit (60) capable of executing projection instructions provides performance improvement in multiple precision floating point arithmetic. The projection instructions provide for obtaining partial sequences of numbers, products, and sums which have definite alignments and widths which a programmer can set. This allows very fast computation of both individual intermediate computations and final results. A range projection instruction (210, 410) builds a mask with an exponent from one source (230, 430) and a mantissa from another (240, 440). A project instruction (610) builds a result by masking (660) mantissa bits in a source operand after alignment (630) with a mask. Projection multiply (810), add (1000), and subtract instructions build results by masking (850, 1070) mantissa bits of unrounded partial results after alignment (830, 1020, 1040) with a mask.
REFERENCES:
patent: 5463574 (1995-10-01), Desrosiers et al.
patent: 5732005 (1998-03-01), Kahle et al.
patent: 5822619 (1998-10-01), Sidwell
patent: 5862067 (1999-01-01), Mennemeier et al.
patent: 5884070 (1999-03-01), Panwar
patent: 5886915 (1999-03-01), Sharangpani et al.
Ellis Richard L.
Motorola Inc.
Polansky Paul J.
LandOfFree
Method and apparatus for implementing floating point projection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for implementing floating point projection , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for implementing floating point projection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1184820