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This paper addresses the problem of on-line testing of floating-point computing circuits. The problem is connected with the use of the truncated operations in the part of mantissas processing. The arithmetic shift performed on a Barrel-shifter is the most often used truncated operation. Known approaches to on-line testing of the Barrel-shifter are based on duplication of the truncated operation or...
In this paper, features of on-line testing for computing circuits at approximated data processing are considered. Checking reliability of the approximated results for arithmetic operations is estimated. The low reliability of traditional checking methods caused by rejection of authentic results is shown. Ways to decrease the rejection probability of authentic results are determined using the truncated...
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