public virtual void TestSortableDoubleNaN()
{
long plusInf = NumericUtils.DoubleToSortableInt64(double.PositiveInfinity);
foreach (double nan in DOUBLE_NANs)
{
Assert.IsTrue(double.IsNaN(nan));
long sortable = NumericUtils.DoubleToSortableInt64(nan);
Assert.IsTrue((ulong)sortable > (ulong)plusInf, "Double not sorted correctly: " + nan + ", long repr: " + sortable + ", positive inf.: " + plusInf);
}
}
public virtual void TestDoubles()
{
double[] vals = new double[] { double.NegativeInfinity, -2.3E25, -1.0E15, -1.0, -1.0E-1, -1.0E-2, -0.0, +0.0, 1.0E-2, 1.0E-1, 1.0, 1.0E15, 2.3E25, double.PositiveInfinity, double.NaN };
long[] longVals = new long[vals.Length];
// check forward and back conversion
for (int i = 0; i < vals.Length; i++)
{
longVals[i] = NumericUtils.DoubleToSortableInt64(vals[i]);
Assert.IsTrue(vals[i].CompareTo(NumericUtils.SortableInt64ToDouble(longVals[i])) == 0, "forward and back conversion should generate same double");
}
// check sort order (prefixVals should be ascending)
for (int i = 1; i < longVals.Length; i++)
{
Assert.IsTrue(longVals[i - 1] < longVals[i], "check sort order");
}
}