METHOD FOR PRODUCING A REPRESENTATION OF A CALCULATION RESULT THAT IS LINEARLY DEPENDENT ON THE SQUARE OF A VALUE

摘要

The device has computation result presented in non-logarithmic x-bit representation and processing mechanism (24) to accomplish processing (38) of non-logarithmic x-bit representation of value (22 1,22N) in order to receive computation result that depends linearly on value. Processing mechanism is arranged to use effective scaling factor so that computation result is scaled. Computation result is scaled depending on effective scaling factor. Logarithmic mechanism is for applying logarithmic function to y-bit representation (26) of non-logarithmic computation result in order to receive scaled logarithmic representation (30) of computation result. Y is smaller or two times x. Re-scaling mechanism (32) is for adding or subtracting (44) correction value to or from scaled logarithmic representation to which logarithmic function, applied to effective scaling factor, corresponds in order to produce logarithmic representation (34) of computation.