| 摘要 |
An electronic device comprising an arithmetic circuitry (AC) for performing at least one of an addition or a subtraction of more than two binary input numbers (BINl - BIN4) is provided, wherein at least two of the binary input numbers differ in their bit-widths. The arithmetic circuitry (AC) comprises an extension means (EUl - EU3) for performing a sign and/or a zero extension of at least one of the binary input numbers (BINl - BIN4). Further, the arithmetic circuitry (AC) comprises at least two two-operand arithmetic units (AUl - AU3), each for calculating an addition and/or a subtraction of two operands being a first and a second binary number, and overflow and saturation means (OSUl - OSU3) for detecting a calculation overflow of at least one two-operand arithmetic unit (AUl - AU3) and for saturating the calculation result of the arithmetic unit (AUl - AU3) in accordance with the detected overflow result. |
