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Concurrent Euclid (ConEuc) is a concurrent descendant of the Euclid programming language designed by James Cordy and Ric Holt, then at the University of Toronto, in 1980. ConEuc was designed for concurrent, high performance, highly reliable system software, such as operating systems, compilers and embedded microprocessor systems. The TUNIS operating system, a Unix variant, was implemented entirely in Concurrent Euclid. ConEuc extends a core subset of Euclid with processes and monitors (as specified by C.A.R. Hoare) as well as language constructs needed for systems programming including separate compilation, variables at absolute addresses, type converters, long integers and other features.
ConEuc was implemented by a small (50k bytes), fast, portable compiler that was self-compiling and had replaceable code generators. High quality code generators for several computers, including the PDP-11, VAX-11, Motorola 68000 and Motorola 6809 were developed that produced code comparable to the best C compilers. Concurrent Euclid programs that used concurrency could be run on a bare machine (supported by a small assembly language kernel), or in simulated mode as an ordinary process running under an operating system.
The Turing programming language is a direct descendant of Concurrent Euclid and its Turing Plus variant eventually replaced ConEuc in most applications.
ConcurrentEuclid (ConEuc) is a concurrent descendant of the Euclid programming language designed by James Cordy and Ric Holt, then at the University...
with Unix V7, but with a completely redesigned kernel, written in ConcurrentEuclid. Programs that ran under Unix V7 could be run under TUNIS with no...
languages included the design of ConcurrentEuclid (1980) and Turing (1983), with R.C. Holt, and the implementation of the Euclid (1978) and SP/k (1974) languages...
make significant advances. Around 300 BC, geometry was revolutionized by Euclid, whose Elements, widely considered the most successful and influential textbook...
gonia, "angle", related to gony "knee"); it was used by both Strabo and Euclid to refer to a line connecting two vertices of a rhombus or cuboid, and later...
system that supported concurrent engineering. Euclid software made Matra Datavision a true market leader in the field of CAD/CAM. Euclid was employed in the...
The Concurrent Design Facility (CDF) is the European Space Agency main assessment center for future space missions and industrial review. Located at ESTEC...
second triangle. This theorem is given as Proposition 24 in Book I of Euclid's Elements. The hinge theorem holds in Euclidean spaces and more generally...
the very first page of Euclid's Elements. The names used for modern classification are either a direct transliteration of Euclid's Greek or their Latin...
ancient Babylon and probably China. Two prominent early number theorists were Euclid of ancient Greece and Diophantus of Alexandria. The modern study of number...
connected with the Proto-Indo-European root *ank-, meaning "to bend" or "bow". Euclid defines a plane angle as the inclination to each other, in a plane, of two...
played on Sunday. The Euclid Club was hindered by another development, Cedar Heights. Concurrent with the development of Euclid Heights, William and Edmund...
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