/** Test iterators. */
public void testIterators() {
// integers
BigInteger rf = new BigInteger();
// System.out.println("rf = " + rf);
// polynomials over integral numbers
GenPolynomialRing<BigInteger> pf = new GenPolynomialRing<BigInteger>(rf, rl);
// System.out.println("pf = " + pf);
// random polynomial
GenPolynomial<BigInteger> p = pf.random(kl, 2 * ll, el, q);
// System.out.println("p = " + p);
// test monomials
for (Monomial<BigInteger> m : p) {
// System.out.println("m = " + m);
assertFalse("m.c == 0 ", m.coefficient().isZERO());
assertFalse("m.e < (0) ", m.exponent().signum() < 0);
}
// test exponents
Iterator<ExpVector> et = p.exponentIterator();
while (et.hasNext()) {
ExpVector e = et.next();
// System.out.println("e = " + e);
assertFalse("e < (0) ", e.signum() < 0);
}
// test coefficents
Iterator<BigInteger> ct = p.coefficientIterator();
while (ct.hasNext()) {
BigInteger i = ct.next();
// System.out.println("i = " + i);
assertFalse("i == 0 ", i.isZERO());
}
}
/**
* ExpVector sign.
*
* @param U
* @return 0 if U is zero, -1 if some entry is negative, 1 if no entry is negativ and at least one
* entry is positive.
*/
public static int EVSIGN(ExpVector U) {
return U.signum();
}