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D.12.1.6 coeffmod
Procedure from library aksaka.lib (see aksaka_lib).
- Usage:
- coeffmod(f,n);
- Assume:
- poly f depends on at most var(1) of the basering
- Return:
- poly f modulo number n
- Note:
- at first the coefficients of the monomials of the polynomial f are
determined, then their remainder modulo n is calculated,
after that the polynomial 'is put together' again
Example:
| LIB "aksaka.lib";
ring R = 0,x,dp;
poly f=2457*x4+52345*x3-98*x2+5;
bigint n=3;
coeffmod(f,n);
==> x3+x2+2
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