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:
Sep. 21, 1999
Filed:
Jun. 23, 1997
Vladimir Y Volkonsky, Moscow, RU;
Sun Microsystems, Inc., Palo Alto, CA (US);
Abstract
In the present invention, a method for directing parallel processing computing device to perform the operation of setting a signed value of N bits to an absolute value comprises the steps of: performing an arithmetic shift right of N-1 bit to form a bit mask; performing an exclusive-OR logical operation with the signed value of N bits and the bit mask to form a result; and subtracting the bit mask from the result of the exclusive-OR logical operation to form the absolute value of the signed value of N bits. Further, an apparatus for parallel processing a signed value to form an absolute value comprises: means for performing an arithmetic shift right of N-1 bit to form a bit mask; means for performing an exclusive-OR logical operation with the signed value of N bits and the bit mask to form a result; and means for subtracting the bit mask from the result of the exclusive-OR logical operation to form the absolute value of the signed value of N bits.