Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2007-05-22
2007-05-22
Malzahn, D. H. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
Reexamination Certificate
active
10222612
ABSTRACT:
One embodiment of the present invention provides a system that facilitates performing exception-free arithmetic operations within a computer system. During execution of a computer program, the system receives an instruction to perform an arithmetic operation that involves manipulating floating-point values. If the arithmetic operation manipulates a floating-point value representing {+0}, the arithmetic operation is performed in a manner consistent with {+0} representing a set containing a single value “−0”, wherein “−0” is the limit of a sequence of values that approaches zero only from above. Similarly, if the arithmetic operation manipulates a floating-point value representing {−0}, the arithmetic operation is performed in a manner consistent with {−0} representing a set containing a single value “+0”, wherein “+0” is the limit of a sequence of values that approaches zero only from below.
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Hansen Eldon R.
Walster G. William
Malzahn D. H.
Park Vaughan & Fleming LLP
Sun Microsystems Inc.
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