| public static SortableLongToDouble ( long val ) : double | ||
| val | long | |
| return | double | |
public virtual double ParseDouble(System.String val)
{
int shift = val[0] - NumericUtils.SHIFT_START_LONG;
if (shift > 0 && shift <= 63)
{
throw new FieldCacheImpl.StopFillCacheException();
}
return(NumericUtils.SortableLongToDouble(NumericUtils.PrefixCodedToLong(val)));
}
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.DoubleToSortableLong(vals[i]);
Assert.IsTrue(vals[i].CompareTo(NumericUtils.SortableLongToDouble(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");
}
}