Method and apparatus for identifying and correcting date calcula

Details Method and apparatus for identifying and correcting date calcula Method and apparatus for identifying and correcting date calcula

1996-08-27

1998-04-14

Voeltz, Emanuel T.

G06F 944

Patent

active

057404429

ABSTRACT:
A standardized test environment assists identifying problematic instances of instructions in computer programs that produce erroneous results caused by dates having years expressed in a truncated form. A standardized production environment takes corrective action for specified instances of instructions by modifying one or more values such that the instructions achieve correct results. In one embodiment of a test environment, a computer system collects diagnostic information for instances of subtraction operations that produce negative results. In one embodiment of a production environment, a computer system intercepts execution of a computer program at specified locations and takes corrective action according to information obtained from a table of control information.

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