Arithmetic operation in a data processing system
AssigneeInternational Business Machines Corporation
InventorsKlaus M. Kroener, Christophe J. Layer, Silvia M. Mueller, Kerstin Schelm
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Abstract
An arithmetic operation in a data processing unit, preferably by iterative digit accumulations, is proposed. An approximate result of the arithmetic operation is computed iteratively. Concurrently at least two supplementary values of the approximate result of the arithmetic operation are computed, and the final result selected from one of the values of the approximate result and the at least two supplementary values of the arithmetic operation depending on the results of the last iteration step.
Claims10
A method for performing an arithmetic operation in a data processing unit, the method comprising:
- the data processing unit iteratively computing an approximate result of the arithmetic operation;
- concurrently with the iteratively computing, the data processing unit computing at least two supplementary values of the approximate result of the arithmetic operation;
- and
- the data processing unit selecting a final result of the arithmetic operation from among a set including the approximate result and the at least two supplementary values depending on a result of a last iteration of the iteratively computing.
Dependencies are inferred from the claim text.