tak's Introduction

Tak

Tak is a simple benchmark function. This repo contains some scripts I wrote to test various language implementations.

It is defined as follows:

def tak(x, y, z):
    if y < x:
        return tak(
            tak(x - 1, y, z),
            tak(y - 1, z, x),
            tak(z - 1, x, y),
        )
    else:
        return z

Current results - x = 48, y = 20, z = 12 - M1 MacBook Pro:

rust            | 0:00:00.973172
c               | 0:00:01.007381
luajit          | 0:00:03.208017
factor          | 0:00:06.010207
gforth          | 0:00:13.519273
uxntal          | 0:00:16.565155
lua             | 0:00:17.558004
python          | 0:00:33.063282

Note that Factor does not currently support arm64 processors, so it is running through Rosetta 2 translation in this run.

PRs Welcome!

I'd love to build up a collection of more languages, and while I plan to implement some more myself, I won't say no to help!

The general requirements for adding a new language:

Create a new folder for the language.
Add the implementation - usually named tak.foo, where foo is the relevant extension.
Add run.sh, which passes three arguments $1, $2 and $3 to the program.
For compiled languages, add build.sh to generate the compiled output.
The program must read the values of x, y, and z from argv.
The program must produce some sort of output, as this makes verification and debugging easier.
The program must implement the Tak function as specified above - I'm interested in raw performance, not the number of clever optimisations you can make.

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