Invalid .hgrm output produced #39
Description
The logic for `IsLastValue()' is incorrect and can flag multiple values as the last value.
This causes the incorrect output shown below (note multiple lines with the last column missing):
Value Percentile TotalCount 1/(1-Percentile)
1.000 0.000000000000 7604459 1.00
1.000 0.100000000000 7604459 1.11
1.000 0.200000000000 7604459 1.25
1.000 0.300000000000 7604459 1.43
1.000 0.400000000000 7604459 1.67
1.000 0.500000000000 7604459 2.00
1.000 0.550000000000 7604459 2.22
1.000 0.600000000000 7604459 2.50
<SEVERAL ROWS REMOVED FOR BREVITY>
383.000 0.999998283386 9999983 582542.22
453.000 0.999998474121 9999985 655360.00
511.000 0.999998664856 9999987 748982.86
537.000 0.999998855591 9999990 873813.33
672.000 0.999999046326 9999991
777.000 0.999999141693 9999992
18143.000 0.999999237061 9999993
208127.000 0.999999332428 9999994
224639.000 0.999999427795 9999995
229759.000 0.999999523163 9999996
229759.000 0.999999570847 9999996
230271.000 0.999999618530 9999997
230271.000 0.999999666214 9999997
258943.000 0.999999713898 9999998
258943.000 0.999999761581 9999998
258943.000 0.999999785423 9999998
275711.000 0.999999809265 9999999
275711.000 0.999999833107 9999999
275711.000 0.999999856949 9999999
275711.000 0.999999880791 9999999
275711.000 0.999999892712 9999999
282111.000 0.999999904633 10000000
282111.000 1.000000000000 10000000
#[Mean = 1.714, StdDeviation = 205.505]
#[Max = 282111.000, Total count = 10000000]
#[Buckets = 14, SubBuckets = 2048]
I'm pretty sure the fix is to make IsLastValue look like this (i.e using double.Epsilon):
public bool IsLastValue()
{
return Math.Abs(PercentileLevelIteratedTo - 100.0D) < double.Epsilon
}