| 摘要 |
PURPOSE:To execute at a high speed a function operation processing for executing a constant operation plural times by providing a storage circuit for storing constant data used for a function operation of a floating point. CONSTITUTION:At the time of initialization, constant data required for a function operation of a floating point is stored in a storage circuit 6. In the case of calculating directly point data from the outside, for instance, in the case of addition, an arithmetic circuit 5 executes addition by inputting information of addition and no-read-out/write to an address input line 1 and supplying data to a data input/output line 7. In the case of adding the constant data which is stored at the time of initializing, when information of addition and a read-out address is inputted to the address input line 1, the constant data which is read out of the storage circuit 6 passes through the data input/output line 7 and given to the arithmetic circuit 5, and the arithmetic circuit 5 executes addition of the constant data by an adding instruction which is supplied from a control circuit 2. In such a way, the function operation can be executed at high speed. |
