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:
Aug. 10, 2010
Filed:
Jun. 30, 2004
Jeffrey S. Brooks, Austin, TX (US);
Sadar U. Ahmed, Santa Clara, CA (US);
Jeffrey S. Brooks, Austin, TX (US);
Sadar U. Ahmed, Santa Clara, CA (US);
Oracle America, Inc., Redwood City, CA (US);
Abstract
An apparatus and method for integer to floating-point format conversion. A processor may include an adder configured to perform addition of respective mantissas of two floating-point operands to produce a sum, where a smaller-exponent one of the floating-point operands has a respective exponent less than or equal to a respective exponent of a larger-exponent one of the floating-point operands. The processor may further include an alignment shifter coupled to the adder and configured, in a first mode of operation, to align the floating-point operands prior to the addition by shifting the respective mantissa of the smaller-exponent operand towards a least-significant bit position. The alignment shifter may be further configured, in a second mode of operation, to normalize an integer operand by shifting the integer operand towards a most-significant bit position. The second mode of operation may be active during execution of an instruction to convert the integer operand to floating-point format.