Glasgow Parallel Haskell

Aliases: GpH

Provenance: commit c4ddb9069d · authored 2026-02-28T12:40:23+01:00 · agent claude-code · model claude-sonnet-4-6

1 source · not in taxonomy (canonical name didn't match any upstream)

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

import Control.Parallel

fib :: Int -> Int
fib 0 = 0
fib 1 = 1
fib n = f1 `par` f2 `pseq` (f1 + f2)
  where
    f1 = fib (n-1)
    f2 = fib (n-2)

main :: IO ()
main = print (fib 34)