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. 27, 2018
Filed:
Oct. 06, 2015
Altera Corporation, San Jose, CA (US);
Tomasz Czajkowski, Toronto, CA;
Altera Corporation, San Jose, CA (US);
Abstract
An integrated circuit may be provided with a specialized processing block that performs floating-point addition and subtraction operations. For this purpose, the specialized processing block includes a fused adder and subtractor stage with an adder circuit and a subtractor circuit. The adder and subtractor circuits share an alignment stage for aligning the mantissas of incoming floating-point numbers and provide a simplified normalization stage with one right shifter and one left shifter. The specialized processing blocks may be arranged in rows or columns such that an input of a first specialized processing block is directly coupled to an output of a second specialized processing block and an input of the second specialized processing block is directly coupled to an output of the first specialized processing block.