Method and apparatus for calculating reciprocals and reciprocal square roots
US6115733A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/3828
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processor capable of efficiently evaluating constant powers of an operand such as the reciprocal and reciprocal square root is disclosed. The processor comprises a multiplier that is configured to perform iterative multiplication operations to evaluate constant powers of an operand such as the reciprocal and reciprocal square root. Intermediate products that are formed may be rounded and normalized in two paths, one assuming an overflow will occur, and then compressed and stored for use in the next iteration. The processor comprises a multiplier capable of performing signed and unsigned scalar and vector multiplication is disclosed. The multiplier may performing rounded by adding a rounding constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.