Complex SLI arithmetic: Representation, algorithms and analysis

Abstract

The extension of the SLI (symmetric level index) system to complex numbers and arithmetic is discussed. The natural form for representation of complex quantities in SLI is in the modulus-argument form, and this can be sensibly packed into a single 64-b word for the equivalent of the 32-b real SLI representation. The arithmetic algorithms prove to be very slightly more complicated than for real SLI arithmetic. The representation, the arithmetic algorithms, and the control of errors within these algorithms are described.<>