algol68g binary package in Ubuntu Trusty arm64

 Algol 68 is a secure, expression-oriented programming language with which
 you elegantly code algorithms without having to bother too much about
 irrelevant technical details and limitations inherent to many other
 languages.
 .
 Algol 68 Genie offers for example:
 » many runtime checks facilitating debugging and improving the reliability of your programs,
 » native support for arbitrary precision arithmetic including complex numbers,
 » syntactic constructions to support linear algebra,
 » a gdb-style debugger and a pretty-printer to beautify source code,
 » optional linkage to GNU plotutils, the GNU scientific library or PostgreSQL,
 » extensions as UNIX pipes, regular expression matching, and web page content fetching.

Source package