Floating point arithmetic unit using modified Newton-Raphson technique for division and square root
US5515308A · kind A · utility
55Cited by
4References
10Claims
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Key dates
| Filing date | Sep 8, 1995 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Sep 8, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/5356
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A floating point processing system which uses a multiplier unit and an adder unit to perform floating point division and square root operations using both a conventional and a modified form of the Newton-Raphson method. The modified form of the Newton-Raphson method is used in place of the final iteration of the conventional Newton-Raphson so as to compute high precision approximated results with a substantial improvement in speed. The invention computes approximated results faster and simplifies hardware requirements because no multiplications of numbers of the precision of the result are required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.