Patent · US Active

Negative zero control in instruction execution

US11023205B2 · kind B2 · utility

2Cited by

9References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Cedric Lichtenau · Stuttgart, DE
Reid T. Copeland · Markham, CA
Petra Leber · Ehningen, DE
Silvia M. Mueller · Altdorf, DE
Jonathan D. Bradbury · Poughkeepsie, US
Xin Guo · Toronto, CA

Key dates

Filing date	Feb 15, 2019
Grant date	Jun 1, 2021
Priority date	—
Expiry date	Jun 26, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06F2207/4912
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Negative zero control for execution of an instruction. A process obtains an instruction to perform operation(s) using an input value. The instruction includes a negative zero control indicator indicating whether negative zero control is enabled for execution of the instruction. The process executes the instruction, the executing including performing the operation(s) using the input value to obtain a result having a sign, determining whether to control the sign of the result, the determining being based at least in part on the negative zero control indicator being set to a defined value, and performing further processing, as part the executing the instruction, based on the determining.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.