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Here we consider one special situation for approximate computing. Given a specification, S, in a truth table and its corresponding multi-level logic circuit implementation, I, S is changed to S' by only changing the truth table value for exactly one minterm from 0 to 1 or 1 to 0. We would like to transform I into I' in such a way that I' is equivalent to S' This is a sort of basic operations for approximate...
Traditional debugging methods try to find an appropriate function of the given inputs for the internal nodes such that the modified circuit becomes correct. In this paper, we propose a new approach based on iterative SAT solving to find the inputs of the function for the internal nodes out of all the internal signals and primary inputs such that it is guaranteed to be able to correct the functionality...
In logic synthesis, the search space is infinite in the sense that any number of gates can be connected using any topology to come up with the best circuit under performance and other constraints. In formal verification, to achieve full coverage, an $n$-input circuit must be checked either explicitly or implicitly using the complete set of $2^{n}$ input values. There are, however, situations when...
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