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:
May. 11, 2010
Filed:
Jan. 26, 2006
Son Dao Trong, Stuttgart, DE;
Juergen Haess, Schoenaich, DE;
Klaus Michael Kroener, Boeblingen, DE;
Eric M. Schwarz, Gardiner, NY (US);
Son Dao Trong, Stuttgart, DE;
Juergen Haess, Schoenaich, DE;
Klaus Michael Kroener, Boeblingen, DE;
Eric M. Schwarz, Gardiner, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for performing a binary mode and hexadecimal mode Multiply-Add floating point operation in a floating point arithmetic unit according to a formula A*C+B, wherein A, B and C operands each have a fraction and an exponent part expA, expB and expC and the exponent of the product A*C is calculated and compared to the exponent of the addend under inclusion of an exponent bias value dedicated to use unsigned biased exponents, wherein the comparison yields a shift amount used for aligning the addend with the product operand, wherein a shift amount calculation provides a common value CV for both binary and hexadecimal according to the formula (expA+expC−expB+CV).