The SKIM II processor is a microcoded hardware machine for the rapid evaluation of functional languages. This paper gives details of some of the more novel methods employed by SKIM II, and resulting performance measurements. The authors conclude that combinator reduction can still form the basis for the efficient implementation of a functional language.
A two-layer model is used to 'investigate the asymmetric motions in the tropical atmosphere as small perturbations on a symmetric basic. state which contains a vertical shear in the zonal wind. The physics used to describe them ignore latent heat, but include parameterized dissipation and non-geostrophic effects. The perturbed motion is treated as… (More)
A set of facilities for an algebra system that makes it possible to mampulate formal power series is described. Unlike many previous power series packages, the one presented here does not enforce any predetermined or arbitrary limits on the order of expansions generated. The system can deal with the elementary functions and copes gracefully with removable… (More)
This paper describes the construction of a rational function package where the GCD and factorization routines are well integrated and consistent with each other and both use state of the art algorithms. The work represents an exercise in producing a service rather than an experimental piece of code, where portability, reliability and clear readable code are… (More)
SKIM is a computer built to explore pure functional programming, combinators as a machine language and the use of hardware to provide direct support for a high level language. Its design stresses simplicity and aims at providing minicomputer performance (in its particular application areas) for microcomputer costs. This paper discusses the high level… (More)