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:
Oct. 26, 1993
Filed:
Jun. 10, 1992
Applicant:
Inventor:
Jonathan B Sweedler, Sunnyvale, CA (US);
Assignee:
Intel Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364748 ; 364745 ; 3401462 ;
Abstract
A safe instruction recognition method and apparatus for use in a pipelined floating-point processor is described. It is based on the examination of the exponents of each operand. A simple symmetric test, applicable to each exponent, is disclosed using the same fixed upper and lower limits. A parallel safe instruction recognition network is described that allows the simultaneous testing of both operand exponent lower and upper limits. All operands declared safe by this method ensure against floating-point processor overflow and underflow exceptions for add, subtract, multiply and divide operations.