Calculation method and assembly for the presentation of randomly upward or downward biased calculation results, and with determination of the number of correct significant digits

摘要

Is associated with each number of truncation information (TA1, TB1, ...) its positive or negative depending on whether réeile value is or is not truncated in the representation used several times calculation is performed by disrupting the flow of at least one procedure independently of the other, the disturbance consisting, during each elementary operation, and optionally adding a random least significant bit in the mantissa of each number in which information associated truncation is positive, and the average value is developed and the standard deviation of the different results obtained to determine the exact number of significant digits of the results.