Author Topic: Another embeddable Scheme : KSI  (Read 6213 times)

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RobbeK

  • Guest
Another embeddable Scheme : KSI
« on: January 17, 2015, 04:36:54 AM »
Documentation in Russian only , -- seems to have the full numeric tower

http://ksi.sourceforge.net/

also have a look at http://www.lambdanative.org/

best Rob
« Last Edit: January 17, 2015, 05:37:03 AM by RobbeK »

JRS

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #1 on: January 17, 2015, 09:37:00 AM »
Interesting. It seems there is almost as many Lisp languages as there are BASIC.  :o

I'm just a Scheme observer. No more converting, embedding of LISP languages for me. I'm happy with TinyScheme for Script BASIC and have moved on to other things. Please don't let my lack of participation diminished your dreams.

I would be interested in your findings with Gauche. Full featured,. stable, easy to use, extensible, ...? ? ?


Mike Lobanovsky

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #2 on: January 17, 2015, 09:40:05 AM »
seems to have the full numeric tower

1. No, complex numbers aren't implemented.

2. Also, some weird restrictions as to what can and cannot be defined:

(define 1+ (lambda (x) (+ 1 x)))

reports 1+ as an error caused by bad numeric notation.

3. Doesn't support the (macro) procedure either.

Other deviations are also possible but I didn't bother to investigate any further.

Yet might work a little faster than fully optimized nanoscheme:
  • 28.2 sec ksi
  • 30 sec nanoscheme compiled with -O3
in a doubly recursive (fibonacci 35) benchmark.


(Hehe, the docs contain a translation of r5rs Scheme standard to Russian :) )

RobbeK

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #3 on: January 17, 2015, 03:22:29 PM »
Hi,

@John,  seems exc , both hygienic and classic macro's -- some very interesting math libs , I will have a look at the FFI tomorrow -- could be very very usable (it seems it does a kind of "compile" on the fly -- not sure what is meant - maybe just a kind of parser translating the S-expressions without evaluating them (?   dunno)

@Mike -- well complex numbers seem to work (see attached) but maybe only with the +,-,*,/   forgot to test goniometric functions,powers  etc...  (hard to believe this should be working ...  )  fractions do work too (as you can see)   

best Rob

.

JRS

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #4 on: January 17, 2015, 03:34:22 PM »
Quote from: Rob
... seems it does a kind of "compile" on the fly ...

Like Script BASIC, it's tokenizing the code before execution. Sounds promising from the little time I have spent with gosh.

I noticed the eval() function as well. That's a very nice feature for a Scheme/Lisp language to have. (jealous SB dev/user comment)

On the other hand, I do have the TinyScheme ext. mod. to act as an evaluator.  ::)

Please keep me in the loop as you do your review.
« Last Edit: January 17, 2015, 03:46:50 PM by John »

Mike Lobanovsky

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #5 on: January 17, 2015, 05:04:36 PM »
Yes Rob,

It can handle complex numbers. I withdraw my Objection 1. It just can't read when I type 0.+5i or 0+5.i or 0.+5.i and throws an error.

Still that's ubnormal IMHO because Gauche, Gambit, and Petite Chez do parse such notation without any problem.

Mike Lobanovsky

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #6 on: January 17, 2015, 05:08:15 PM »
time I have spent with gosh

Gosh, how gauche is this Gauche! (Fr. crooked) ;D

(jealous SB dev/user comment)

Hehe, manage SB but code in FBSL and be happy. :P

RobbeK

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #7 on: January 18, 2015, 03:38:37 AM »
Hi ,

It's a pity , Ksi can not do macro's - otherwise a personalized notation for complex numbers could be set up easily.
with functions then :
(define (complex x y)
  (+ x (* y (sqrt -1))))

It's amazing how left means a kind of evil in all languages while right is mmm...  right  (gauche et droite , en français)
gauchir in french is to turn aside.  But most obvious it is in Latin :    sinister  :-\
(i'm educated by jesuit priests - i know those meanings )
German/Flemish link , links etc..  also related with tricky , not right (obviously ), not trustworthy ,  etc ...
Maybe in Slavic languages on ideological grounds there may have been a kind of rehabilitation -- the similarity between red and beautiful is pure coincidence probably  ???

(eval )   together with (quote ) the core of Lisp
(eval ) turns data into code
(quote ) turns code into data

strangely , (eval ) takes two arguments in Gauche (maybe the new R7 ?)
but it has lazy evaluation and lazy lists if needed , this is great !!!! , makes Haskell style evaluations possible :
take all natural numbers ,from these those smaller than 400 , from these those ending on an 8 etc...
non-lazy it is simply impossible to take all the natural numbers  -- Racket Scheme can do something similar , but the technique is different (in-naturals)  iirc

The documentation related with FFI (Gauche) i can find it Japanese only ..  there are some packages (inclusive a C-wrapper) but most of them linking jap documentation
http://practical-scheme.net/wiliki/wiliki.cgi/Gauche:Packages?l=en   

addendum : (on an old 'puter - running Linux )

gosh> (define (fib n)
        (if (<= n 2) 1
          (+ (fib (- n 1)) (fib (- n 2)))))
fib
gosh> (fib 10)
55
gosh> (time (fib 35))
;(time (fib 35))
; real   1.996
; user   1.920
; sys    0.000
9227465
gosh>

TCO ???   

best Rob

CLISP : (compiled)

[1]> (defun fib(n)
       (if (<= n 2) 1
        (+ (fib (- n 2)) (fib (- n 1)))))
FIB
[2]> (compile 'fib)
FIB ;
NIL ;
NIL
 (time (fib 35))
Real time: 3.569223 sec.
Run time: 3.428 sec.
Space: 0 Bytes
9227465

Austin Kyoto CL

GCL (GNU Common Lisp)  2.6.10 CLtL1    Apr  2 2014 14:19:37
Source License: LGPL(gcl,gmp), GPL(unexec,bfd,xgcl)
Binary License:  GPL due to GPL'ed components: (XGCL READLINE UNEXEC)
Modifications of this banner must retain notice of a compatible license
Dedicated to the memory of W. Schelter

Use (help) to get some basic information on how to use GCL.
Temporary directory for compiler files set to /tmp/

>(defun fib(n)
       (if (<= n 2) 1
        (+ (fib (- n 2)) (fib (- n 1)))))

FIB

>(compile 'fib)

Compiling /tmp/gazonk_3770_0.lsp.
End of Pass 1. 
End of Pass 2. 
OPTIMIZE levels: Safety=0 (No runtime error checking), Space=0, Speed=3
Finished compiling /tmp/gazonk_3770_0.lsp.
Loading /tmp/gazonk_3770_0.o
start address -T 0x8a3658 Finished loading /tmp/gazonk_3770_0.o
#<compiled-function FIB>
NIL
NIL

>(time (fib 35))

real time       :      0.370 secs
run-gbc time    :      0.349 secs
child run time  :      0.000 secs
gbc time        :      0.000 secs
9227465

Racket Scheme :
Welcome to DrRacket, version 5.3.6 [3m].
Language: racket; memory limit: 256 MB.
> (time (fib 35))
cpu time: 3600 real time: 3780 gc time: 0
9227465

Gauche is faster than a bytecode compiler with GNU Lightning JIT  8)
(CLISP uses identical compiling and the benchmarks are almost identical too)


the smart way -- single recursion helper function with accumulators :
Gauche :


gosh> (define (fib* n ac1 ac2)
        (if (<= n 2) ac2
         (fib* (- n 1) ac2 (+ ac1 ac2))))
fib*
 
gosh> (define (fib n) (fib* n 1 1))
fib
gosh> (fib 10)
55
gosh> (time (fib 35))
;(time (fib 35))
; real   0.000
; user   0.000
; sys    0.000
9227465
gosh> (time (fib 350))
;(time (fib 350))
; real   0.000
; user   0.000
; sys    0.000
6254449428820551641549772190170184190608177514674331726439961915653414425
gosh> (time (fib 3500))
;(time (fib 3500))
; real   0.008
; user   0.000
; sys    0.000
1280135297794681361535851368251019615389004811220654459648376511830868987540265505171364974834834706416086262
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851268191822192497641904232912275607663029887240803055414422300714028137340125
gosh> (time (fib 35000))
;(time (fib 35000))
; real   0.433
; user   0.380
; sys    0.000
1651671774188865369804424388786818731955799225064552005474226085878901080409589735151395201321742005395540690
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830543323125
gosh>

« Last Edit: January 18, 2015, 04:55:16 AM by RobbeK »

jack

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #8 on: January 18, 2015, 03:55:02 PM »
RobbeK, the timing for gauche is amazing.

Mike Lobanovsky

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #9 on: January 18, 2015, 11:36:24 PM »
Quote from: Rob
Maybe in Slavic languages on ideological grounds there may have been a kind of rehabilitation
Not at all. Левый in Russian means 1) left 2) fake, phony, fraudulent, untrustful, unreliable. :D

Quote from: Jack
RobbeK, the timing for gauche is amazing.
Absolutely.

JRS

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #10 on: January 19, 2015, 12:05:13 AM »
My graphic impression of Gauche



RobbeK

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #11 on: January 19, 2015, 11:27:01 AM »
 8)     

Rob

RobbeK

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #12 on: January 19, 2015, 03:09:59 PM »
Hi,

NewLISP isn't much slower ...

;;------------------  code

(macro (car L) (L 0))
(macro (cadr L) ((rest L) 0))

;;or
;;   (define car (lambda-macro (L) (expand '(L 0))))
;;   (define cadr  (lambda-macro (L) (expand '((rest L) 0))))

(define (fib n)
   (let ((seq (list 0L 1L)))
    (dotimes (i n)
       (setq seq (list (cadr seq) (+ (car seq) (cadr seq)))))
(car seq)))

;;--------------------------------------  REPL

newLISP v.10.6.0 32-bit on Linux IPv4/6 libffi, options: newlisp -h

>
(lambda-macro (L) (expand '(L 0)))
(lambda-macro (L) (expand '((rest L) 0)))
(lambda (n)
 (let ((seq (list 0L 1L)))
  (dotimes (i n)
   (setq seq (list ((rest seq) 0) (+ (seq 0) ((rest seq) 0)))))
  (seq 0)))
> (time (setq a (fib 35000)))
573.276
> (time (setq a (fib 35000)))
551.615
> a
1651671774188865369804424388786818731955799225064552005474226085878901080409589735151395201321742005395540690
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830543323125L

best,Rob
>

RobbeK

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #13 on: January 20, 2015, 12:33:49 AM »
However,
.. using a compiler CL with labels (identical with Scheme's letrec  ,  the recursive let )



GCL (GNU Common Lisp)  2.6.10 CLtL1    Apr  2 2014 14:19:37
Source License: LGPL(gcl,gmp), GPL(unexec,bfd,xgcl)
Binary License:  GPL due to GPL'ed components: (XGCL READLINE UNEXEC)
Modifications of this banner must retain notice of a compatible license
Dedicated to the memory of W. Schelter

Use (help) to get some basic information on how to use GCL.
Temporary directory for compiler files set to /tmp/

>(defun fib (x)
   (labels  ((fib* (n a b)
              (if (< n 3) b
                (fib* (1- n) b (+ a b)))))
  (fib* x 1 1)))

FIB

>(compile 'fib)

Compiling /tmp/gazonk_3346_0.lsp.
End of Pass 1. 

;; Note: Tail-recursive call of FIB* was replaced by iteration.
End of Pass 2. 
OPTIMIZE levels: Safety=0 (No runtime error checking), Space=0, Speed=3
Finished compiling /tmp/gazonk_3346_0.lsp.
Loading /tmp/gazonk_3346_0.o
start address -T 0x8a36e0 Finished loading /tmp/gazonk_3346_0.o
#<compiled-function FIB>
NIL
NIL

>(time (fib 35000))

real time       :      0.159 secs
run-gbc time    :      0.079 secs
child run time  :      0.000 secs
gbc time        :      0.019 secs
165167177418886536980442  ....   etc

JRS

  • Guest
Re: Another embeddable Scheme : KSI
« Reply #14 on: January 20, 2015, 01:11:21 AM »
3 10ths of a second difference between compiled and interpretive doesn't seem that far apart for real world Lisp applications.

Have you tried GNU/MIT Scheme on Linux yet?