Patent · US Active

Normalization of a product on a datapath

US10235135B2 · kind B2 · utility

5Cited by

4References

14Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Klaus M. Kroener · Ehningen, DE
Cedric Lichtenau · Stuttgart, DE
Silvia M. Mueller · Altdorf, DE
Andreas Wagner · Eppelheim, DE

Key dates

Filing date	Jul 17, 2017
Grant date	Mar 19, 2019
Priority date	—
Expiry date	Jul 17, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F7/5443
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A unit operates on a sum term and a carry term separated into a high part and a low part of a product and performs a method that includes iteratively computing a carry save product and separating the carry save product into the high part and the low part: an intermediate product. The unit generates an intermediate wide result by performing a wide addition of the intermediate product to generate an unrounded sum for the high part (i.e., a fused-multiply-add high part) and the low part (i.e., a fused-multiply-add high part). The unit pre-aligns the intermediate wide result on two fixed length shifters such that the fused-multiply-add high part and the fused-multiply-add low part are pre-aligned to each fit on one shifter of the two fixed length shifters.

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