/** Test univariate. */
public void testUnivariate() {
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);
GenPolynomial<BigInteger> a, b, c, d;
// x**1
a = pf.univariate(pf.nvar - 1);
// System.out.println("a = " + a);
assertTrue("deg(a) = 1: ", a.degree() == 1);
assertEquals("xi == xi: ", pf.vars[0], a.toString());
b = pf.univariate(pf.vars[0]);
// System.out.println("b = " + b);
assertTrue("deg(b) = 1: ", b.degree() == 1);
assertEquals("xi == xi: ", pf.vars[0], b.toString());
c = pf.univariate(0);
// System.out.println("c = " + c);
assertTrue("deg(c) = 1: ", c.degree() == 1);
assertEquals("xi == xi: ", pf.vars[pf.nvar - 1], c.toString());
d = pf.univariate(pf.vars[pf.nvar - 1]);
// System.out.println("d = " + d);
assertTrue("deg(c) = 1: ", c.degree() == 1);
assertEquals("xi == xi: ", pf.vars[pf.nvar - 1], d.toString());
// x**7
a = pf.univariate(pf.nvar - 1, 7);
// System.out.println("a = " + a);
assertTrue("deg(a) = 7: ", a.degree() == 7);
assertEquals("xi == xi: ", pf.vars[0] + "^7", a.toString());
b = pf.univariate(pf.vars[0], 7);
// System.out.println("b = " + b);
assertTrue("deg(b) = 7: ", b.degree() == 7);
assertEquals("xi == xi: ", pf.vars[0] + "^7", b.toString());
c = pf.univariate(0, 7);
// System.out.println("c = " + c);
assertTrue("deg(c) = 7: ", c.degree() == 7);
assertEquals("xi == xi: ", pf.vars[pf.nvar - 1] + "^7", c.toString());
d = pf.univariate(pf.vars[pf.nvar - 1], 7);
// System.out.println("d = " + d);
assertTrue("deg(c) = 7: ", c.degree() == 7);
assertEquals("xi == xi: ", pf.vars[pf.nvar - 1] + "^7", d.toString());
}
