stack oriented calculus kernel in Z © 1999-2009 by Alain Brobecker (aka baah/Arm's Tech)

SockZ is a small programming language for RiscOS computers, using a stack (smells like Forth, huh? ;) and able to work with big relative integers. It features only a minimalist set of instructions but allows easy definition of functions (eg to handle fractions or polynomials). Enough babble, here is an example program:

  ;Comments start with a semicolon (as in assembly)
   INPUT             ;ask for a number n
   COPY PRINT "!="   ;print it followed by "!="
   ! PRINT           ;compute n! then print it
  END
  
  ;Recursive factorial function, input=... n, output=... n!
  #! ;Functions start with a sharp and return with END
    COPY             ;... n n
    SKIP>0 !end      ;go to !end if n<=0
    COPY             ;... n n
    1                ;... n n 1
    -                ;... n n-1
    !                ;... n (n-1)!
    *                ;... n!=n*(n-1)!
  END                ;quit function
  .!end ;Labels start with a dot
    DROP 1 END       ;return 1 when n<=0

If you want to know more about SockZ download the whole archive, it contains some example programs, benchmarks, sourcecode & more documentation. For the time being here is a small list of features:

+ Faster than GNU bc 1.02, Derive v2.03, Maple V2 (DOS) & Numbers (RiscOS).
+ Allows easy definition of functions.
+ Has small memory needs and the interpreter is only 8Kb.
+ Can handle integers in the range [-2^{2^34}+1;2^{2^34}-1].
+ Stack can contain up to 2³¹-1 objects.
+ Written in pure ARM assembly language!
+ Freeware and provided with sources.
+ Has a funny name and doesn't stink as much as real sockz. ;)
= Currently interpreted, a compiler/tokeniser might come later on.
- Very lousy development environment.
- No byte arrays/string handling facilities.
- No load/save facility.