The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2000
Filed:
Sep. 19, 1997
Timothy A Pontius, Lake in the Hills, IL (US);
Kenneth A Dockser, Morrisville, NC (US);
VLSI Technology, Inc., San Jose, CA (US);
Abstract
A floating-point processor nominally capable of single and double, but not extended, precision execution stores operands in extended-precision format. A format converter converts single and double precision source values to extended-precision format. Trap logic checks the apparent precision of the extended-precision operands and the requested result precision to determine whether the floating-point processor can execute the requested operation and yield the appropriate result. If the maximum of the requested precision and the maximum apparent precision of the operands is single or double, the requested operation is executed in hardware. Otherwise, a trap is issued to call an extended precision floating-point subroutine. This approach augments the class of operations that can be handled in hardware by a double-precision floating-point processor, and thus improves the floating-point computational throughput of an incorporating computer system.