Re: Degree overflow in pow_monome - PARI

[Phat Tran <minhphat@gmail.com>]

Sorry for the inconvenience if this email was sent to you mail box. You 
can unsubscribe it.

Back to the problem, I found that the function gpowgs() had caused the 
error. I replaced it with powgi(), but it gave me a wrong answer. (I got
 a correct answer by using GP). I assigned m, n, b and d 30-digit 
numbers. 
Any help ?

Thanks, 

Phat

On Wed, Mar 17, 2010 at 9:32 PM, Phat Tran <minhphat@gmail.com> wrote:

***   degree overflow in pow_monome.
  ***   Error in the PARI system. End of program.

I got the error message above while running the codes in C using PARI/GP 2.3.5 under cygwin.

    GEN m = readseq("123456789");
    GEN n = readseq("1234567");
   
    GEN a = readseq("7");
    GEN c = readseq("8");
   
    GEN b = readseq("10358");
    GEN d = readseq("49850");
   
   
    GEN x = pol_x[fetch_user_var("x")];
    GEN y = pol_x[fetch_user_var("y")];
    GEN z = pol_x[fetch_user_var("a")];
       
    z = gpowgs(gmodulo(gadd(x, gmodulo(gadd(y, gmodulss(1, n)), gsub(gpowgs(y, c), d))), gsub(gpowgs(x, a), b)), m);

I wonder if the number m is too big for PARI to be handled. 

Thanks,

Minhphat