Data calculating device and method for processing data in data block form

摘要

A data calculating device preferably used to improve the calculation precision when fixed-point calculation is performed by block-floating-point system.Each piece of data of a data group is calculated, the minimum scale factor representative of the calculated data is detected as a group scale factor (GSF), and calculated data is subjected to scaling based on the detected GSFs. These processing are applied to each data group of a data block. The minimum GSF out of the detected GSFs is detected as a block scale factor (BSF). When calculation of the calculated data is performed again, the calculated data of the data group is subjected to scaling according to the GSFs and BSF before the calculation performed again.