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. 07, 2014
Filed:
Jan. 08, 2009
Maarten Boersma, Holzgerlingen, DE;
Markus Kaltenbach, Leinfelden, DE;
Michael Klein, Schoenaich, DE;
Silvia Melitta Mueller, Altdorf, DE;
Jochen Preiss, Boeblingen, DE;
Maarten Boersma, Holzgerlingen, DE;
Markus Kaltenbach, Leinfelden, DE;
Michael Klein, Schoenaich, DE;
Silvia Melitta Mueller, Altdorf, DE;
Jochen Preiss, Boeblingen, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for converting a signed fixed point number into a floating point number that includes reading an input number corresponding to a signed fixed point number to be converted, determining whether the input number is less than zero, setting a sign bit based upon whether the input number is less than zero or greater than or equal to zero, computing a first intermediate result by exclusive-ORing the input number with the sign bit, computing leading zeros of the first intermediate result, padding the first intermediate result based upon the sign bit, computing a second intermediate result by shifting the padded first intermediate result to the left by the leading zeros, computing an exponent portion and a fraction portion, conditionally incrementing the fraction portion based on the sign bit, correcting the exponent portion and the fraction portion if the incremented fraction portion overflows, and returning the floating point number.