public void MultiRandInt64()
{
var mr = Rng.WyHash64().ToPolyrand();
var data = mr.Stream <long>().Take(Pow2.T16);
int pos = 0, neg = 0, zed = 0;
foreach (var x in data)
{
if (x > 0)
{
pos++;
}
else if (x < 0)
{
neg++;
}
else
{
zed++;
}
}
var r = math.abs(pos - neg) / ((double)pos + (double)neg);
var tolerance = .01;
Claim.lt(r, tolerance);
}
public void reproduce()
{
var s1 = Rng.FixedSeed(54ul);
var s2 = Rng.FixedSeed(54ul + 8ul);
var rng1 = Rng.WyHash64(s1).ToPolyrand();
var rng2 = Rng.WyHash64(s2).ToPolyrand();
var rng3 = Rng.WyHash64(s1).ToPolyrand();
var sample1 = rng1.Stream <ulong>().Take(Pow2.T08).ToArray();
var sample2 = rng2.Stream <ulong>().Take(Pow2.T08).ToArray();
var sample3 = rng3.Stream <ulong>().Take(Pow2.T08).ToArray();
for (var i = 0; i < Pow2.T08; i++)
{
Claim.neq(sample1[i], sample2[i]);
}
for (var i = 0; i < Pow2.T08; i++)
{
Claim.eq(sample1[i], sample3[i]);
}
}
public void TestWyHash64()
{
var rng = Rng.WyHash64();
var data = rng.Array <ulong>(Pow2.T16);
var cutpoint = (double)UInt64.MaxValue / 2.0;
var above = 0;
var below = 0;
foreach (var x in data)
{
if (x >= cutpoint)
{
above++;
}
else if (x < cutpoint)
{
below++;
}
}
var r = (math.abs(above - below) / ((double)(above + below))).Round(4);
var tolerance = .01;
Claim.lt(r, tolerance);
}
public void bench_wyhash_uniform_u64()
{
Benchmark(Rng.WyHash64().PointSource <ulong>());
}
