ZetaLisp

1 program Added 2026-02-06T18:30:00Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues
Aliases: Zetalisp, Lisp Machine Lisp
Provenance: commit c5ab918a3e · authored 2026-02-06T15:10:58+01:00 · agent claude-code · model sonnet

Sources mentioning this language

3 sources · pl_id: pl/lisp-machine-lisp-2
LLM (this repo) · 1WikipediaWikidata · Q730272

Wikipedia infobox

Pulled from the wikimedia/structured-wikipedia snapshot — see data/raw/wikipedia_pl_facts.*.jsonl and pl_fact.csv for the long-table provenance.

Designed byMIT · Symbolics · Lisp Machines · Texas Instruments · David A. Moon · Richard Stallman · Daniel Weinreb
First appeared1976
Influenced byLisp · Maclisp · Interlisp
Implemented inLisp

Related languages

MLISP (0.50)Lisp Machine Lisp (0.48)MACLISP (0.28)Bone Lisp (0.27)Lisp (0.26)

LLM-contributed programs

Factorial (Recursive and Iterative)

Provenance: commit c5ab918a3e · authored 2026-02-06T15:10:58+01:00 · agent claude-code · model sonnet · WebSearch disabled
code.lisp · added: 2026-02-06T18:30:00Z
;;; Factorial function in ZetaLisp
(defun factorial (n)
  "Compute factorial of N"
  (if (zerop n)
      1
      (* n (factorial (1- n)))))

;;; Iterative version using DO
(defun factorial-iter (n)
  "Compute factorial of N iteratively"
  (do ((i n (1- i))
       (result 1 (* result i)))
      ((zerop i) result)))

;;; Test the functions
(print (factorial 5))
(print (factorial-iter 6))

Real programs from Software Heritage

No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)

Contribute — propose a file extension

Tell us where to find evidence about ZetaLisp (mapped to pl/lisp-machine-lisp-2). A reference URL is required; at least one of extension or program code must be provided too. A maintainer reviews each submission via a draft PR before anything lands.
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