Methods and apparatus for compiling a transcendental floating-point operation
US7080364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2003 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Jul 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/556
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and an apparatus for compiling a transcendental floating-point operation are disclosed. The disclosed techniques compile a transcendental floating-point operation by replacing the transcendental floating-point operation with an integer-based routine (e.g., a single routine) hand-coded to perform the transcendental floating-point operation. Each of the instructions in the integer-based routine, including the integer operations, is compiled directly into opcodes without primitive floating-point emulation calls. As a result, function nesting is reduced and more efficient algorithms are used. The disclosed system does not simply emulate basic floating-point operations using integer operations. Instead, portions of the computation are isolated where fixed-point accuracy is sufficient and thus native integer computations can be used. For example, computing (log(1+Z)−Z)/Z instead of computing log(1+Z).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.