Issue No.04 - April (1983 vol.32)
P. Kornerup , Department of Computer Science, Aarhus University
The foundations of an arithmetic unit performing the add, subtract, multiply, and divide operations on rational operands are developed. The unit uses the classical Euclidean algorithm as one unified algorithm for all the arithmetic operations, including rounding. Binary implementations are discussed, based on techniques known from SRT division, and utilizing ripple-free borrow-save and carry-save addition. Average time behavior is investigated.
SRT-division, Borrow-save and carry-save addition, Euclidean algorithm, fixed-slash and floating-slash representations, rational numbers
P. Kornerup, "Finite Precision Rational Arithmetic: An Arithmetic Unit", IEEE Transactions on Computers, vol.32, no. 4, pp. 378-388, April 1983, doi:10.1109/TC.1983.1676239