diff options
| -rw-r--r-- | ms/ms.go | 22 | ||||
| -rw-r--r-- | ms/ms_test.go | 18 |
2 files changed, 40 insertions, 0 deletions
@@ -77,6 +77,9 @@ func (ma *MathematicalSeries[T]) AllSequentialIncreasesLessThan(limit float64) ( return true, maximumSequentialIncrease } +/* + * N.B.: Overflow is possible -- use at your discretion! + */ func (ma *MathematicalSeries[T]) StandardDeviationLessThan(limit T) (bool, T) { // If we have not yet accumulated a complete set of intervals, @@ -112,6 +115,25 @@ func (ma *MathematicalSeries[T]) StandardDeviationLessThan(limit T) (bool, T) { // Finally, the standard deviation is the square root // of the variance. sd := T(math.Sqrt(variance)) + //sd := T(variance) return T(sd) < limit, sd } + +func (ma *MathematicalSeries[T]) IsNormallyDistributed() bool { + _, stddev := ma.StandardDeviationLessThan(0.0) + avg := float64(ma.CalculateAverage()) + + fstddev := float64(stddev) + within := float64(0) + for _, v := range ma.Values() { + if (avg-fstddev) <= float64(v) && float64(v) <= (avg+fstddev) { + within++ + } + } + return within/float64(ma.divisor.Value()) >= 0.68 +} + +func (ma *MathematicalSeries[T]) Values() []T { + return ma.elements +} diff --git a/ms/ms_test.go b/ms/ms_test.go index 0ba6da6..3eb3b4f 100644 --- a/ms/ms_test.go +++ b/ms/ms_test.go @@ -1,6 +1,7 @@ package ms import ( + "reflect" "testing" "github.com/network-quality/goresponsiveness/utilities" @@ -81,3 +82,20 @@ func Test_StandardDeviationLessThan_Float(test *testing.T) { test.Logf("Standard deviation calculation result: %v", sd) } } + +func Test_RotatingValues(test *testing.T) { + series := NewMathematicalSeries[int](5) + + series.AddElement(1) + series.AddElement(2) + series.AddElement(3) + series.AddElement(4) + series.AddElement(5) + + series.AddElement(6) + series.AddElement(7) + + if !reflect.DeepEqual([]int{6, 7, 3, 4, 5}, series.Values()) { + test.Fatalf("Adding values does not properly erase earlier values.") + } +} |