PARI's commands

[science_man_88]

Originally Posted by CRGreathouse

It should...

> v=vector(3,n,n);v[2]+=10;v
%1 = [1, 12, 3]
> v=vectorsmall(3,n,n);v[2]+=10;v
%2 = Vecsmall([1, 12, 3])

Right, it uses C strings rather than Unicode. A person who cared should be able to hack together a solution with enough care, but since I avoid Pari for string processing I haven't though about it much. (I have run into it, though, like when I mention French or German authors in addhelp() lines and can't use accents in their names.)

if I could make a list of all the alt characters you wanted in vecsmall maybe making a function alt(x) might help.

[CRGreathouse]

Originally Posted by science_man_88

if I could make a list of all the alt characters you wanted in vecsmall maybe making a function alt(x) might help.

You can't store anything but ASCII characters in Pari strings (because, underneath, they're just C strings which have the same limitation).

[science_man_88]

nope vecsmall only stores it as integers by the looks of it but I can't get all of them to work.

[science_man_88]

Originally Posted by CRGreathouse

You can't store anything but ASCII characters in Pari strings (because, underneath, they're just C strings which have the same limitation).

http://evanjones.ca/unicode-in-c.html has how they do it in C wonder if we can implement the same in Pari lol.

[CRGreathouse]

Originally Posted by science_man_88

http://evanjones.ca/unicode-in-c.html has how they do it in C wonder if we can implement the same in Pari lol.

I alluded to this in post #2035. It's quite possible, though it would require perhaps a thousand changes in the Pari source code (mostly small).

Originally Posted by science_man_88

nope vecsmall only stores it as integers by the looks of it but I can't get all of them to work.

Reread my post.

[kar_bon]

Originally Posted by CRGreathouse

It should...

> v=vector(3,n,n);v[2]+=10;v
%1 = [1, 12, 3]
> v=vectorsmall(3,n,n);v[2]+=10;v
%2 = Vecsmall([1, 12, 3])

I used that one directly in the Strchr-function:

s=concat(s,Strchr(sup[n]-=32))

and that will produce the error:

*** _-=_: bug in PARI/GP (Segmentation Fault), please report

Perhaps something really to report!?

But the code

s=concat(s,Strchr(sup[n]=sup[n]-32))

works here fine.

[CRGreathouse]

Originally Posted by kar_bon

I used that one directly in the Strchr-function:

s=concat(s,Strchr(sup[n]-=32))

and that will produce the error:

*** _-=_: bug in PARI/GP (Segmentation Fault), please report

Perhaps something really to report!?

But the code

s=concat(s,Strchr(sup[n]=sup[n]-32))

works here fine.

Interesting. I may report this.

Regardless, you don't need to do that here; you can just do

StrToUp(str)={
	my(sup=Vecsmall(str),s="");
	for(n=1,#sup,
		if(sup[n]>=97 && sup[n]<=122,
			s=concat(s,Strchr(sup[n]-32))
		,
			s=concat(s,Strchr(sup[n]))
		)
	);
	s
};

since you don't use sup later.

[3.14159]

It's been somewhat difficult to find a factor for sigma(4477204945765526980349352291678647292170001931988428673↑2), or 20045364126387295389488107373344241624560499868937574184788150529738565510740963223091652652278528299596969603.

So far, I've found no factors ≤ 30 digits.

[science_man_88]

anyone want to see the encoding I made to show for 40 questions I don't think it will hurt it too much lol.

coding(string) = a=Vecsmall(string);for(y=1,#a,vecsort(a);for(x=1,#a,a[x]=a[x]+x));for(z=1,#a,if(z%2==0,print1(Strchr(a[z]%256)),print1(a[z])));print1("\n"string)

[science_man_88]

I got this recently lol :

(21:17)>coding(string) = a=Vecsmall(string);vecsort(a);for(x=1,#a,a[x]+=x)
%32 = (string)->a=Vecsmall(string);vecsort(a);for(x=1,#a,a[x]+=x)
(21:17)>coding("string")
  *** _+=_: bug in PARI/GP (Segmentation Fault), please report

[CRGreathouse]

Originally Posted by 3.14159

It's been somewhat difficult to find a factor for sigma(4477204945765526980349352291678647292170001931988428673↑2), or 20045364126387295389488107373344241624560499868937574184788150529738565510740963223091652652278528299596969603.

So far, I've found no factors ≤ 30 digits.

Nothing to 45 digits (though I'm not quite finished with the ECM). It's almost surely a semiprime, and a hard one at that. You might have to use NFS if you want to crack it.