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. 30, 2007
Filed:
Mar. 07, 2003
Mayan Moudgill, White Plains, NY (US);
Vladimir Kotlyar, Stamford, CT (US);
Mayan Moudgill, White Plains, NY (US);
Vladimir Kotlyar, Stamford, CT (US);
Sandbridge Technologies, Inc., White Plains, NY (US);
Abstract
A method of formulating and solving equations that facilitate recognition of full word saturating addition and subtraction The method includes formulating, for each basis addition statement z=x+y or subtraction statement z=x−y, data flow equations that describe properties of the program statements being analyzed; and solving the data flow equations. The properties may include: (a) the values BITS of program variables as Boolean functions of the sign bits of x, y and z; (b) the condition COND under which program statements are executed as Boolean functions of the sign bits of x, y and z; and (c) the condition REACH of which values of variables reach any given use of z when overflow/underflow/neither occurs.