/**
* Construct a polynomial over a ring. In general the valueOf method should be used to construct a
* new polynomial.
*
* @param baseRing the underlying ring of the polynomial.
* @param symbol the symbol used to display the polynomial
* @param coeffs an array of coefficients in the base ring coeff[0] is constant, coeff[1] is
* coefficient of t etc.
*/
public Polynomial(RingI baseRing, String symbol, Number coeffs[]) {
this.baseRing = baseRing;
this.symbol = symbol;
int deg = 0;
for (int i = coeffs.length - 1; i > 0; --i)
if (!baseRing.equals(coeffs[i], baseRing.getZERO())) {
deg = i;
break;
}
if (deg == coeffs.length - 1) this.coeffs = coeffs;
else {
this.coeffs = new Number[deg + 1];
System.arraycopy(coeffs, 0, this.coeffs, 0, deg + 1);
}
this.degree = deg;
}
public boolean equalsPoly(Polynomial n) {
if (this.getDegree() != n.getDegree()) return false;
for (int i = 0; i <= this.getDegree(); ++i)
if (!baseRing.equals(this.getCoeff(i), n.getCoeff(i))) return false;
return true;
}