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:
Jun. 02, 1998
Filed:
Mar. 08, 1995
Erick Oakland, Zavalla, TX (US);
Richard Simpson, Carlton, GB;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A double precision rounding unit is employed for both single and double precision rounding. Rounding double precision mantissas employs the double precision rounding unit normally. For rounding single precision mantissas, the single precision mantissa is both left and right justified at the inputs of the double precision rounding unit. The N bits of the single precision number are supplied to a set of N least significant bit inputs of the double precision rounding unit. The N bits of the single precision number are also supplied to a set N of most significant bit inputs of the double precision rounding unit. The central M bits, which are between the set of N least significant bit inputs and the set of N most significant bit inputs are supplied with zeros. The double precision rounding unit is operated normally with the single precision input. A single precision/double precision masking unit at the output of the double precision rounding unit selects the proper bits. In double precision mode, all the output bits of the double precision rounding unit are valid. In single precision mode, only the N most significant outputs of the double precision unit are valid.