Search found 28 matches

by hds1
Tue Jul 07, 2020 6:37 am
Forum: newLISP in the real world
Topic: XFS undelete
Replies: 0
Views: 665

XFS undelete

Hi, we had to recover tens of GB on a deleted XFS file system and this is what we came up with. May be it is useful to one or the other when recovering deleted files on a XFS partition. Pls wade through the source with all the comments. It is not intended as a XFS howto. Links to the interna of XFS ...
by hds1
Thu Jan 11, 2018 12:52 pm
Forum: newLISP in the real world
Topic: (share) with (pack) memory
Replies: 3
Views: 1716

Re: (share) with (pack) memory

hm, i meant reading the (shared memory) from a C-lib. i.e. Parent <-> (share mem) <-> Forked child (calling the C-lib) Parent: (set 'flashMemory (share)) (share flashMemory (rand 0xFFFF 100)) Forked Child: (emulavr_load_flash (pack (dup "u" 100) flashMemory)) C-lib prints rubbish numbers: ubyte * em...
by hds1
Sun Jan 07, 2018 9:44 am
Forum: newLISP in the real world
Topic: (share) with (pack) memory
Replies: 3
Views: 1716

(share) with (pack) memory

it seems not possible to use (share) with packed elements. i.e. (set 'flash (share)) (share flash (pack (dup "u" 10) (sequence 1 10))) According to the docs (share) should work with any newlisp expression. When forking processes and calling C-libs from these processes it would be nice to be able to ...
by hds1
Thu Jul 06, 2017 6:45 am
Forum: Anything else we might add?
Topic: Error in gsl.lsp ?
Replies: 3
Views: 1653

Re: Error in gsl.lsp ?

Thks for pointing to this one. It is indeed the locale setting. This works. (set-locale "en_US.utf8") (load "/usr/local/share/newlisp/modules/gsl.lsp") (trace (open "trace.txt" "write")) (gsl:CholeskyD '((4 2 -2) (2 10 2) (-2 2 5))) > ((2 0 0) (1 3 0) (-1 1 1.732050807568877)) Setting (set-locale "d...
by hds1
Wed Jul 05, 2017 11:43 am
Forum: Anything else we might add?
Topic: Error in gsl.lsp ?
Replies: 3
Views: 1653

Error in gsl.lsp ?

The example for (gsl:CholeskyD) throws an error, newlisp v.10.7.1, libgsl.so.19 on XUBUNTU, gsl Ver 2.1: All other examples are working. (gsl:CholeskyD '((4 2 -2) (2 10 2) (-2 2 5)))) ERR: mismatch in number of arguments called from user function gsl:(CholeskyD '((4 2 -2) (2 10 2) (-2 2 5))) Debug o...
by hds1
Thu Jun 29, 2017 7:36 pm
Forum: newLISP in the real world
Topic: multiple-value-bind
Replies: 3
Views: 1390

Re: multiple-value-bind

Answering myself .. ;; @syntax (m-v-b symlist valuelist body) ;; ;; @param symlist valuelist body ;; symlist: List of var names ;; valuelist: List of values or function call which returns list of values ;; body: Operation with var names ;; @return Expanded 'let with body ;; @example ;; (m-v-b '(a b ...
by hds1
Thu Jun 29, 2017 7:22 pm
Forum: newLISP in the real world
Topic: multiple-value-bind
Replies: 3
Views: 1390

Re: multiple-value-bind

Good idea. Looks not too bad: (macro (mvb) nil) (constant 'mvb (lambda-macro () (list 'let (flat (transpose (list (args 0) (args 1)))) (args 2)))) (define (ttt) (mvb (a b c) (1 2 3) (println "Killroy: " (+ a b c)))) (ttt) ==> > Killroy: 6 6 '(mvb (a b c) (1 2 3) (println "Killroy: " (+ a b c))) ==> ...
by hds1
Thu Jun 29, 2017 5:53 am
Forum: newLISP in the real world
Topic: multiple-value-bind
Replies: 3
Views: 1390

multiple-value-bind

Hello, i'am trying to emulate "multiple-value-bind" via read time macro. That is translate: (mvb '(a b c .... ) '(1 2 3 ....) ...))) into (let (a 1 b 2 c 3 ....) ..... )))) The idea i had is expansion during read time : (macro (mvb) nil) (constant 'mvb (lambda-macro (ALIST BLIST) (letex (flat (trans...
by hds1
Tue Jun 27, 2017 7:19 pm
Forum: newLISP in the real world
Topic: Infix.lsp as macro
Replies: 4
Views: 1656

Re: Infix.lsp as macro

Exactly what is needed. Thx. A minor setback is that infix.lsp does not handle "-" with one argument. Math code is much clearer now. Proof of expansion during read time attached. (load "infix.lsp") (macro (mix) nil) (constant 'mix (lambda-macro () (INFIX:xlate (join (map string (args)) " ")))) (defi...
by hds1
Tue Jun 27, 2017 2:09 pm
Forum: newLISP in the real world
Topic: Infix.lsp as macro
Replies: 4
Views: 1656

Re: Infix.lsp as macro

thanks a ton. I must admit that i would never ever thought of a redefiniton.
Can you explain why the macro becomes "executable" due to the redefiniton ?
by hds1
Tue Jun 27, 2017 7:01 am
Forum: newLISP in the real world
Topic: Infix.lsp as macro
Replies: 4
Views: 1656

Infix.lsp as macro

Hi, is it possible to transform the infix.lsp to a "true" macro i.e. doing the work at compile time ? Or do i miss a critical point there ? Calling "eval" during runtime is supposed to be expensive (at least in other lisps). Not sure how newlisp handles eval. Reason for asking is that i redo some of...
by hds1
Wed May 04, 2016 7:01 pm
Forum: So, what can you actually DO with newLISP?
Topic: Quaternion strikes back
Replies: 4
Views: 5847

Re: Quaternion strikes back

@Lutz, the naming is just fine by me. For those in need for speed i've ported the code to C and put it on github so you can access it via FFI. https://github.com/hds1/dual-quaternion-c The functionality is quite the same as for the newlisp module. Time needed for 1000000 Dual Quaternion ScLERPs: 2.4...
by hds1
Fri Apr 29, 2016 11:01 am
Forum: So, what can you actually DO with newLISP?
Topic: Quaternion strikes back
Replies: 4
Views: 5847

Re: Quaternion strikes back

i would consider the package now a stable first release. For the Dual Quaternion module the NLERP, DLB, DLBblending, ScLERP, get/setScrewParams et al. have been added. There are some dependencies between these modules. For the DQ you will need the dualNum,vector and quaternion module as well. If you...
by hds1
Mon Apr 25, 2016 11:24 am
Forum: So, what can you actually DO with newLISP?
Topic: Quaternion strikes back
Replies: 4
Views: 5847

Quaternion strikes back

Thanks Ted for the hint.
Done it. You can find the files here:
https://github.com/hds1

Regards
Heiko
by hds1
Mon Apr 25, 2016 8:21 am
Forum: Anything else we might add?
Topic: min-max limiter
Replies: 2
Views: 6543

Re: min-max limiter

sweet.

Thanks a lot for pointing this one out.
by hds1
Mon Apr 25, 2016 7:13 am
Forum: Anything else we might add?
Topic: min-max limiter
Replies: 2
Views: 6543

min-max limiter

Hello, i couldn't find a function in newlisp to limit a value between upper and lower limits. i.e. something like this: "return x < some_minimum ? some_minimum : x > some_maximum ? : some_maximum : x;" Reason is that i'am working a lot with sin, cos and the brothers and i often need to limit my floa...
by hds1
Wed Apr 06, 2016 7:02 pm
Forum: So, what can you actually DO with newLISP?
Topic: Quaternion Calculus
Replies: 5
Views: 2906

Re: Quaternion Calculus

see github
by hds1
Mon Apr 04, 2016 7:36 pm
Forum: So, what can you actually DO with newLISP?
Topic: Quaternion Calculus
Replies: 5
Views: 2906

Quaternion Calculus

moved to github
https://github.com/hds1

Regards
Heiko
by hds1
Tue Mar 22, 2016 10:08 am
Forum: newLISP in the real world
Topic: exec function not returning string list
Replies: 2
Views: 3087

Re: exec function not returning string list

If you want to avoid the interim file creation you could use the environment as a placeholder i.e. (env "willi" "<html><head></head><body>Killroy</body></html>") (exec "echo $willi" | tidy -q 2>/dev/null) => ("<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 3.2//EN\">" "<html>" "<head>" "<meta name=\"gener...
by hds1
Mon Feb 16, 2015 8:39 am
Forum: newLISP in the real world
Topic: newlisp --quite
Replies: 3
Views: 1332

Re: newlisp --quite

thanks for the hint with (silent). But you need to wrap your whole proggi into it. (silent (long prog to follow)) Hm, it doesn't feel right to me. Consider other scripting languages: echo 'print "laura\n";' | perl echo 'print "laura\n";' | ruby echo 'print "laura\n";' | python (adds an extra \n beca...
by hds1
Sun Feb 15, 2015 8:29 pm
Forum: newLISP in the real world
Topic: newlisp --quite
Replies: 3
Views: 1332

newlisp --quite

Hello, is it possible to turn off the standard return output of newlisp ? i.e: echo "(print 'willi')" | newlisp willinil nil Here the "nil" value. So my feature request would be something like: echo "(println 'willi')" | newlisp -q --> willi Kubuntu 14.04, kernel 3.13.0-45-generic, newLISP v.10.6.2 ...
by hds1
Wed Feb 11, 2015 7:18 pm
Forum: newLISP in the real world
Topic: NL crash on Matrix op
Replies: 3
Views: 1229

Re: NL crash on Matrix op

great. thanks.

Regards
Heiko
by hds1
Wed Feb 11, 2015 2:01 pm
Forum: newLISP in the real world
Topic: NL crash on Matrix op
Replies: 3
Views: 1229

NL crash on Matrix op

Hi, just stumbled upon crashes of newlisp 10.6.2 on not possible Matrix ops. >(set 'A '((1 2 3) (4 5 6))) >(det A 1e-10) --> Speicherzugriffsfehler (Speicherabzug geschrieben) (Memory acces error) and NL crashes. Happens with or without pivot and also on (mat ...) ops. > (set 'B '((-1 1 1) (1 4 -5) ...
by hds1
Sun Mar 30, 2014 6:09 pm
Forum: newLISP in the real world
Topic: cgi; stream output from exe to stdout
Replies: 16
Views: 2713

Re: cgi; stream output from exe to stdout

@Lutz,

thanks for the reply, but still the output is saved first in avariable and then send out to whom ever it shall go.

Can't it be done without interime saving ?

Consider Pictures, video streams or such. You don't want to save them, you want to pass the stream "through".

Thanks
hds1
by hds1
Sat Mar 29, 2014 8:10 am
Forum: newLISP in the real world
Topic: cgi; stream output from exe to stdout
Replies: 16
Views: 2713

cgi; stream output from exe to stdout

Hello all, in a cgi script i'am trying to pipe the output from an exec prog via a stream to the browser. i.e. the output from "mapserver" et al. ; could be MByte large pictures. In Perl i can use print and backquotes like: <snip> $ENV{"QUERY_STRING"}=blah blah print `/path/to/mapserv`; # -> output g...