Method for calculating the inverse of a number, and computer for performing the method
US5274580A · kind A · utility
14Cited by
6References
23Claims
0Family size
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Key dates
| Filing date | Sep 4, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Sep 4, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/5356
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer and method that can be used in digital computers to calculate the inverse I of a number D. The inverse is approximated by I2 after the application of a complementary correction Cjl to an approximation I1 obtained by linear approximation on the basis of a first value Io which in turn is obtained on the basis of an inverse table. The correction value Cjl is obtained from pre-established data CBl and Hj that are memorized in tables of reduced dimensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.