Emulation of a fixed point operation using a corresponding floating point operation
US7461116B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2003 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Aug 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/45504
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer is programmed to emulate a fixed-point operation that is normally performed on fixed-point operands, by use of a floating-point operation that is normally performed on floating-point operands. Several embodiments of the just-described computer emulate a fixed-point operation by: expanding at least one fixed-point operand into a floating-point representation (also called “floating-point equivalent”), performing, on the floating-point equivalent, a floating-point operation that corresponds to the fixed-point operation, and reducing a floating-point result into a fixed-point result. The just-described fixed-point result may have the same representation as the fixed-point operand(s) and/or any user-specified fixed-point representation, depending on the embodiment. Also depending on the embodiment, the operands and the result may be either real or complex, and may be either scalar or vector. The above-described emulation may be performed either with an interpreter or with a compiler, depending on the embodiment. A conventional interpreter for an object-oriented language (such as MATLAB version 6) may be extended with a toolbox to perform the emulation. Use of type propagation…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.