AtariWiki V3: Forth Benchmarks

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Forth83 Benchmarks#

Below is a collection of some Benchmarks for Forth83 systems like VolksForth.

I found most of these benchmarks on comp.lang.forth, Hans Bzemers 4th and Marcel Hendrix benchmark collection

Forth83 Benchmarks
Integer Calculations
Fibonacci 1
Fibonacci 2

Integer Calculations #

32000 constant intMax

variable intResult

: DoInt
  1 dup intResult dup >r !
  begin
    dup intMax <
  while
    dup negate r@ +! 1+
    dup r@ +! 1+
    r@ @ over * r@ ! 1+
    r@ @ over / r@ ! 1+
  repeat
  r> drop drop
;

Fibonacci 1#

: fib1 ( n1 -- n2 )
    dup 2 < if drop 1 exit then
    dup  1- recursive 
    swap 2- recursive  + ;

Fibonacci 2#

: fib2 ( n1 -- n2 )                                                                
   dup 2 < if drop 1 else                                                           
   dup  1- recursive                                                                
   swap 2 - recursive +                                                             
 then ;