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| Newsgroups | comp.lang.c |
|---|---|
| Date | 2015-06-02 00:22 -0700 |
| References | (4 earlier) <a063bfe3-3de5-4409-84c9-fc67b5601eaf@googlegroups.com> <6f80e574-39cf-4fde-85cc-874b9ebc4f6c@googlegroups.com> <ct2jrdFrf5eU2@mid.individual.net> <7beb4e90-e514-45e4-bee6-77211b33abe9@googlegroups.com> <jhiqmate7sgdnru0uanachmtqf0sttf092@4ax.com> |
| Message-ID | <26bddb6b-08ee-46ca-bdd3-fa8d445a8737@googlegroups.com> (permalink) |
| Subject | Re: Column slices |
| From | luser droog <luser.droog@gmail.com> |
On Tuesday, June 2, 2015 at 1:30:21 AM UTC-5, Rosario19 wrote:
> On Mon, 1 Jun 2015 18:04:07 -0700 (PDT), luser droog
> <luser.droog@gmail.com> wrote:
>
> >On Monday, June 1, 2015 at 3:36:14 AM UTC-5, Ian Collins wrote:
> >> asetofsymbols@gmail.com wrote:
> >> > I wrote:"
> >>
> >> More gobbledegook?
> >>
> >
> >If you like gobbledegook, here's my code all golfed-
> >up and gook. There's even a little whitespace in there.
> >A very little.
> >
> >$ cat arrg.c
[snip]
> >#define DO(n,x){I i=0,N=(n);for(;i<N;++i){x;}}/*loop i=[0..n)*/
[snip]
> >
> >A sl(A a,I*s,I*f){ I r=0;
> > DO(a->r, r+=s[i]!=f[i])
> > I d[r]; I w[r]; I j=0;
> > DO(r, while(s[j]==f[j])++j;
> > d[i]=1+(s[j]<f[j]? f[j]-s[j] : s[j]-f[j]);
> > w[i]= s[j]<f[j]? a->w[j] : -a->w[j];
> > ++j)
>
> What DO the macro above?
> int i;
> for(i=0; i<r; ++i)
> {
> while(s[j]==f[j])++j;
> d[i]=1+(s[j]<f[j]? f[j]-s[j] : s[j]-f[j]);
> w[i]= s[j]<f[j]? a->w[j] : -a->w[j];
> ++j
> ^^^^^^^^^^^^^^^^^^^^^
> here at last there is need ';'
> no it is ok... in macro DO() the ';' is in the macro
> }
>
> what is sl?
It takes slices from the array, returning a subarray.
[snip]
> >int main(){
> > A x=ar(3);
> > *el(x,0)=5;
> > *el(x,1)=6;
> > *el(x,2)=7;
> > dmp(x);
> > pr(x,0);
> >
> > A a=iot(24);
> > dmp(a);
> > pr(a,0);
> > A b=ca(a->p,2,3,4);
> > dmp(b);
> > pr(b,0);
> > A c=sl(b,(I[]){0,1,1},(I[]){0,2,3});
> > pr(c,0);
> > A d=xp(c,(I[]){1,0});
> > pr(d,0);
> > return 0;
> >}
> >
>
> A new language?
> I agree if operations ca, xp, sl, dmp, pr have a full names
It's a prototype for using dope vectors to manipulate array data.
It's related to my programming language 'inca'.
https://github.com/luser-dr00g/inca
But I'm not sure whether to incorporate this code into inca3.c
or start over and build on top of this.
There is a "readable" version here:
https://github.com/luser-dr00g/inca/blob/master/arrind.c
And an explanation on SO:
http://stackoverflow.com/questions/30409991/use-a-dope-vector-to-access-arbitrary-axial-slices-of-a-multidimensional-array
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Column slices luser droog <luser.droog@gmail.com> - 2015-05-05 23:18 -0700
Column slices asetofsymbols@gmail.com - 2015-05-06 00:26 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-06 02:33 -0700
Re: Column slices Bartc <bc@freeuk.com> - 2015-05-06 10:46 +0100
Re: Column slices asetofsymbols@gmail.com - 2015-05-07 11:02 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-07 14:05 -0700
Re: Column slices Nobody <nobody@nowhere.invalid> - 2015-05-06 08:29 +0100
Re: Column slices Bartc <bc@freeuk.com> - 2015-05-06 10:30 +0100
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-06 03:11 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-08 09:05 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-11 16:50 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-11 17:24 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-11 19:01 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-19 09:56 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-19 10:43 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-19 11:16 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-19 11:27 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-19 21:28 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-20 08:05 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-19 21:20 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-20 08:55 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-20 08:58 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-21 01:22 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-21 01:34 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-26 19:17 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-31 13:56 -0700
Re: Column slices Keith Thompson <kst-u@mib.org> - 2015-05-31 14:23 -0700
Re: Column slices Ian Collins <ian-news@hotmail.com> - 2015-06-01 09:37 +1200
Re: Column slices asetofsymbols@gmail.com - 2015-06-01 01:23 -0700
Re: Column slices Ian Collins <ian-news@hotmail.com> - 2015-06-01 20:35 +1200
Re: Column slices mark.bluemel@gmail.com - 2015-06-01 03:50 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-06-01 18:04 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-06-01 18:16 -0700
Re: Column slices "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-06-01 19:57 -0700
Re: Column slices Rosario19 <Ros@invalid.invalid> - 2015-06-02 08:30 +0200
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-06-02 00:22 -0700
Re: Column slices Ike Naar <ike@iceland.freeshell.org> - 2015-05-12 06:06 +0000
Re: Column slices Ike Naar <ike@iceland.freeshell.org> - 2015-05-12 21:15 +0000
Re: Column slices asetofsymbols@gmail.com - 2015-05-13 20:49 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-13 23:43 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-13 23:44 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-14 01:02 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-15 23:06 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-16 03:46 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-23 00:17 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-23 07:59 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-23 21:25 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-24 18:29 -0700
Re: Column slices luser droog <luser.droog@gmail.com> - 2015-05-24 18:08 -0700
Re: Column slices asetofsymbols@gmail.com - 2015-05-25 00:13 -0700
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