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Words starting with algol60

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  • algol 58 — (language)   An early version of ALGOL 60, originally known as "IAL".
  • algol 60 — (language)   ALGOrithmic Language 1960. A portable language for scientific computations. ALGOL 60 was small and elegant. It was block-structured, nested, recursive and free form. It was also the first language to be described in BNF. There were three lexical representations: hardware, reference, and publication. The only structured data types were arrays, but they were permitted to have lower bounds and could be dynamic. It also had conditional expressions; it introduced :=; if-then-else; very general "for" loops; switch declaration (an array of statement labels generalising Fortran's computed goto). Parameters were call-by-name and call-by-value. It had static local "own" variables. It lacked user-defined types, character manipulation and standard I/O. See also EULER, ALGOL 58, ALGOL 68, Foogol.
  • algol 60 modified — (language)   An erratum in [Computer J 21(3):282 (Aug 1978)] applies to both.
  • algol 60 revised — (language)   (Or "Revised ALGOL 60") A revision of Algol 60 which still lacked standard I/O.
  • algol 68 — (language)   An extensive revision of ALGOL 60 by Adriaan van Wijngaarden et al. ALGOL 68 was discussed from 1963 by Working Group 2.1 of IFIP. Its definition was accepted in December 1968. ALGOL 68 was the first, and still one of very few, programming languages for which a complete formal specification was created before its implementation. However, this specification was hard to understand due to its formality, the fact that it used an unfamiliar metasyntax notation (not BNF) and its unconventional terminology. One of the singular features of ALGOL 68 was its orthogonal design, making for freedom from arbitrary rules (such as restrictions in other languages that arrays could only be used as parameters but not as results). It also allowed user defined data types, then an unheard-of feature. It featured structural equivalence; automatic type conversion ("coercion") including dereferencing; flexible arrays; generalised loops (for-from-by-to-while-do-od), if-then-else-elif-fi, an integer case statement with an 'out' clause (case-in-out-esac); skip and goto statements; blocks; procedures; user-defined operators; procedure parameters; concurrent execution (par-begin-end); semaphores; generators "heap" and "loc" for dynamic allocation. It had no abstract data types or separate compilation.
  • algol 68 revised — (language)   A significant simplification of ALGOL 68.
  • algol 68-r — (language)   A restriction of ALGOL 68 permitting one-pass compilation, developed at the Royal Signals Radar Establishment, Malvern, Worcester, UK in April 1970.
  • algol 68c — (language)   A variant of ALGOL 68 developed by S. Bourne and Mike Guy of Cambridge University in 1975 and used as the implementation language for the CHAOS OS for the CAP capability computer. ALGOL 68C was ported to the IBM 360, VAX/VMS and several other platforms.
  • algol 68rs — (language)   An extension of ALGOL 68 supporting function closures by the Royal Signals Radar Establishment, Malvern UK. It has been ported to Multics and VAX/VMS.
  • algol 68s — (language)   A subset of ALGOL 68 allowing simpler compilation, intended mainly for numerical computation. It was rewritten in BLISS for the PDP-11, and later in Pascal. It is available as shareware from Charles Lindsey <[email protected]>. Version 2.3 runs on Sun-3 under SunOS 4.x and Atari under GEMDOS (or potentially other computers supported by the Amsterdam Compiler Kit).