OKI Common Lisp

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OKI Common Lisp
Developer(s)Oki Electric Industry Co., Ltd.
Initial releaseOctober 1991; 30 years ago (1991-10)
Stable release
"2.00" / June 17, 1992; 29 years ago (1992-06-17)
    Operating systemOKI UX, SunOS, HP-UX
    Platformi860, SPARC, PA-RISC
    Available inLisp, Common Lisp

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    OKI Common Lisp (development codename Tachyon Common Lisp) is an implementation of Common Lisp by Oki Electric Industry.

    It was six times faster as an interpreter and twice as fast as a compiler than Lucid Common Lisp, which was the fastest at the time (1992), and in some benchmarks was faster than optimized C code on the same machine. It was named Tachyon Common Lisp (development code name) by the developers to mean faster than C (the speed of light in physics).[1][2]

    Language specification[edit]

    CLtL2 compliant at the beginning of development, later made compliant with ANSI standards.[3]

    The OKIstation 7300 was also used as the initial operating platform, later ported to machines with SPARC and PA-RISC.


    1. Nagasaka, Atsushi; Shintani, Yoshihiro; Ito, Tanji; Gomi, Hiroshi; Takahashi, Junichi (January 1, 1992). "Tachyon Common Lisp: an efficient and portable implementation of CLtL2". ACM Sigplan Lisp Pointers. Association for Computing Machinery. V (1): 270–277. doi:10.1145/141471.141561 – via ACM Digital Library. Unknown parameter |s2cid= ignored (help)
    2. https://www.oki.com/jp/Home/JIS/Books/KENKAI/n197/pdf/197_R32.pdf
    3. 恵美, 堀川; 義弘, 新谷; 篤, 長坂; 順一, 高橋; 弘, 五味 (March 1993). "Tachyon Common Lisp : 標準化と拡張性". 全国大会講演論文集. 第46回 (ソフトウェア): 7–8.

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