Compile with

    cc -O3 -c MULMOD10.c
    cc -O3 -o facpoly MULMOD10.o facpoly.c

Execute with

    ./facpoly n foo

where foo is a text file with the polynomial in it (see fac4 for an exampls)
and n is the number of variables which must be x1, x2, ..., xn.  For example 

    ./facpoly 7 fac4

outputs

    n=7 file=fac4
    #f = 16
    facpoly: x=1
    facpoly: x=3
    facpoly: x=5
    time =    0.001s
    f1 := x2+x1;
    f2 := x3*x4+1;
    f3 := x5*x6*x7+x6+x5+1;

If you want to put a comment in the input file preceed it with a # character.

Michael Monagan
May 2025