//returns a uniformly random ulong between Min and Max without modulo bias
public static ulong NextULong(this Random Rng, ulong Min, ulong Max, bool inclusiveUpperBound = false)
{
ulong range = Max - Min;
if (inclusiveUpperBound)
{
if (range == ulong.MaxValue)
{
return(Rng.NextULong());
}
range++;
}
if (range <= 0)
{
throw new ArgumentOutOfRangeException("Max must be greater than Min when inclusiveUpperBound is false, and greater than or equal to when true", "Max");
}
ulong limit = ulong.MaxValue - ulong.MaxValue % range;
ulong r;
do
{
r = Rng.NextULong();
} while (r > limit);
return(r % range + Min);
}
//returns a uniformly random ulong between ulong.Min and Max without modulo bias
public static ulong NextULong(this Random Rng, ulong Max, bool inclusiveUpperBound = false)
{
return(Rng.NextULong(ulong.MinValue, Max, inclusiveUpperBound));
}