Executing perform floating point operation instructions
US8627050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2007 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Sep 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/30181
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system are disclosed for executing a machine instruction in a central processing unit. The method comprise the steps of obtaining a perform floating-point operation instruction; obtaining a test bit; and determining a value of the test bit. If the test bit has a first value, (a) a specified floating-point operation function is performed, and (b) a condition code is set to a value determined by said specified function. If the test bit has a second value, (c) a check is made to determine if said specified function is valid and installed on the machine, (d) if said specified function is valid and installed on the machine, the condition code is set to one code value, and (e) if said specified function is either not valid or not installed on the machine, the condition code is set to a second code value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.