public void testOne() {
final PossibilityArithmetic arith = arithmetic();
final double one = arith.one();
assertEquals(1.0, arith.poss2Prob(one));
assertEquals(0.0, arith.poss2Ln(one), 0.0);
assertTrue(arith.isValidPoss(one));
assertEquals(one, arith.prob2Poss(1.0));
assertEquals(one, arith.ln2Poss(0.0));
}
public void testZero() {
final PossibilityArithmetic arith = arithmetic();
final double zero = arith.zero();
assertEquals(0.0, arith.poss2Prob(zero));
assertEquals(Double.NEGATIVE_INFINITY, arith.poss2Ln(zero));
assertTrue(arith.isValidPoss(zero));
assertEquals(zero, arith.prob2Poss(0.0));
assertEquals(zero, arith.ln2Poss(Double.NEGATIVE_INFINITY));
}
private void checkPow(
final PossibilityArithmetic arith, final double p1, final double p2, double tolerance) {
final double p = Math.pow(p1, p2);
final double s1 = arith.prob2Poss(p1);
assertTrue(arith.isValidPoss(s1));
final double s = arith.pow(s1, p2);
final double pp = arith.poss2Prob(s);
assertEquals(p, pp, tolerance);
}
private void checkDiv(
final PossibilityArithmetic arith, final double p1, final double p2, double tolerance) {
final double p = p1 / p2;
final double s1 = arith.prob2Poss(p1);
assertTrue(arith.isValidPoss(s1));
final double s2 = arith.prob2Poss(p2);
assertTrue("" + s2, arith.isValidPoss(s2));
final double s = arith.divide(s1, s2);
assertTrue(arith.isValidPoss(s));
final double pp = arith.poss2Prob(s);
assertEquals(p, pp, tolerance);
}
private void checkMult(
final PossibilityArithmetic arith, final double p1, final double p2, double tolerance) {
final double p = p1 * p2;
final double s1 = arith.prob2Poss(p1);
assertTrue(arith.isValidPoss(s1));
final double s2 = arith.prob2Poss(p2);
assertTrue(arith.isValidPoss(s2));
final double s = arith.multiply(s1, s2);
assertTrue(arith.isValidPoss(s));
final double pp = arith.poss2Prob(s);
assertEquals(p, pp, tolerance);
}
