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:
Sep. 21, 1999
Filed:
Oct. 17, 1996
Roney S Wong, Sunnyvale, CA (US);
Samsung Electronics Company, Ltd., Seoul, KR;
Abstract
A floating point subtraction is performed on a first and second floating point number to obtain an exponent result and a fraction result, the first floating point number has a first exponent and a first fraction and the second floating point number has a second exponent and a second fraction. A first adder determines an exponent difference between the first and second exponents and, concurrently with determining the exponent difference, a prediction circuit predicts a massive cancellation prediction and a second adder determines the difference between the first and second fraction and generates a massive cancellation fraction result. Then it is determined whether the massive cancellation result is valid and if so, the massive cancellation fraction result is selected as a basis for the fraction result. If not, a result from the no massive cancellation path is selected as the basis for the fraction result.