The Solution of “If-Problem” in Computations with Multi-valued Variables Based on Operator Overloading

This paper presents the exhaustive solution of the “if-problem” in computations with multi-valued variables based on the technique of operation overloading that is widely used in object-oriented programming. The proposed approach addresses the problem of the conditional branches when due to the uncertainty of the operand the result of the logical operation is not determined explicitly and therefore both conditional branches should be executed simultaneously. For the purpose of the study, the code for C/C++ was developed and tested. The results of the performed tests are provided. The proposed solution makes it possible to transfer previously written C/C++ program code for calculations with single-valued types of variables (float, double, etc.) to calculations with any formalism representing the multi-valued variables using minor code modifications. This offers the opportunity to expand the applicability of earlier developed program code to the wider scope of application problems: from the calculations with input variables accurate to round-off errors to the computations with inaccurate or uncertain data.