private static T GreatestCommonDivisor <T>(T one, T two, IArithmetic <T> arithmetic)
{
T big = arithmetic.Max(arithmetic.Abs(one), arithmetic.Abs(two));
T small = arithmetic.Min(arithmetic.Abs(one), arithmetic.Abs(two));
T remainder = arithmetic.Modulo(big, small);
return(arithmetic.Equals(remainder, arithmetic.Zero) ? small : AdvancedMath.GreatestCommonDivisor(small, remainder, arithmetic));
}
protected override IComparable GroupTyped(ColumnTyped <DataT> sourceColumn, ArrayRange sourceIndices)
{
DataT result = math.MaxValue();
foreach (var v in sourceColumn.VisitRows(sourceIndices))
{
result = math.Min(result, v);
}
return(result);
}
protected override IComparable GroupTyped(ColumnTyped <DataT> sourceColumn, ArrayRange sourceIndices)
{
using (Profiling.GetMarker(Profiling.MarkerId.MergeMin).Auto())
{
DataT result = math.MaxValue();
foreach (var v in sourceColumn.VisitRows(sourceIndices))
{
result = math.Min(result, v);
}
return(result);
}
}