Singular

Long integers are available as coefficients of polynomials. Define a ring:
[code]
> ring r=0,x,dp;
[/code]
Then all objects of type number are arbitrary long integers resp. rationals:
[code]
> number n=12345678901234567890;
> number m=n^100;
> size(m); // number of digits of m
204
[/code]

For some applications also the use of "long floats" as polynomial coefficients could be appropriate:
[code]
> ring rr=(real,30),x,dp; // float with 30 digits
> rr;
// characteristic : 0 (real:30 digits, additional 30 digits)
// number of vars : 1
// block 1 : ordering dp
// : names x
// block 2 : ordering C
> number n=12345678901234567890;
> n^100;
0.141741727427773144141199473044e+1910
[/code]

Hope that answers your question.

Christoph Lossen
(Singular Team)

Hi.

Is there any way to define and use long integer numbers? Say 30 digits?