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:
Mar. 22, 2016
Filed:
Aug. 19, 2013
Apple Inc., Cupertino, CA (US);
James S. Blomgren, Austin, TX (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques are disclosed relating to floating-point operations in computer processors. In one embodiment, an apparatus includes a floating-point unit and circuitry configured to receive an initial value X for a floating-point operation. In this embodiment, X is between 0 and 1.0 inclusive. In this embodiment, the circuitry is configured to generate first and second floating-point values based on an exponent of X that sum to 1. In this embodiment, the floating-point unit is configured to perform an operation using the first and second floating-point values. The apparatus may reduce drift, in this embodiment, when a floating-point representation of X does not guarantee that the sum of X and (1−X) is 1. The apparatus may be configured to perform blending and/or interpolation operations using the first and second floating-point values.