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:
Jan. 16, 2001
Filed:
Feb. 06, 1998
Konstantine I. Iourcha, San Jose, CA (US);
Andrea Nguyen, Cupertino, CA (US);
Daniel Hung, Santa Clara, CA (US);
S3 Incorporated, Santa Clara, CA (US);
Abstract
A system for adding or subtracting numbers in signed floating point notation performs exponent and mantissa handling operations in parallel. The system includes a comparator, for determining a greater-magnitude and a lesser magnitude floating point number, operating in parallel with a selector for performing a one's complement and single-bit shift on a mantissa portion of the lesser-magnitude floating point number. The system further includes a remaining shift circuit, for determining an additional amount by which the lesser-magnitude mantissa portion should be shifted; and a shifter. The system also includes an absolute add circuit, for determining whether an absolute addition or an absolute subtraction is to be performed, and a single-bit shift circuit, for indicating whether a shift of at least one bit is required.