public void encodeDecodeSlof()
{
Random random = new Random();
int n = 1000;
double[] ics = new double[n];
for (int i = 0; i < n; i++)
{
ics[i] = Math.Pow(10, 6 * random.NextDouble());
}
byte[] encoded = new byte[n * 2 + 8];
double fixedPoint = MSNumpress.optimalSlofFixedPoint(ics, n);
int encodedBytes = MSNumpress.encodeSlof(ics, n, encoded, fixedPoint);
double[] decoded = new double[n];
int decodedDoubles = MSNumpress.decodeSlof(encoded, encodedBytes, decoded);
Assert.AreEqual(n, decodedDoubles);
for (int i = 0; i < n; i++)
{
Assert.AreEqual(0.0, (ics[i] - decoded[i]) / ((ics[i] + decoded[i]) / 2), 0.0005);
}
}
public void LargeNegativesTest()
{
Random random = new Random();
int n = 5;
double[] ics = new double[] { -1000, 1000, -2000, 2000, -3000 };
double fixedPoint = MSNumpress.optimalSlofFixedPoint(ics, n);
Assert.AreNotEqual(fixedPoint, Double.NaN);
}
public void NegativesOneTest()
{
Random random = new Random();
int n = 5;
double[] ics = new double[] { -1, 1, -2, 2, -3 };
double fixedPoint = MSNumpress.optimalSlofFixedPoint(ics, n);
Assert.AreNotEqual(fixedPoint, Double.NaN);
ics = new double[] { -1.001, 1.001, -2.001, 2.001, -3.001 };
fixedPoint = MSNumpress.optimalSlofFixedPoint(ics, n);
Assert.AreNotEqual(fixedPoint, Double.NaN);
ics = new double[] { -.99, .99, -1.99, 1.99, -2.99 };
fixedPoint = MSNumpress.optimalSlofFixedPoint(ics, n);
Assert.AreNotEqual(fixedPoint, Double.NaN);
}
public void encodeDecodeSlof5()
{
Random random = new Random();
int n = 1000;
double[] ics = new double[n];
for (int i = 0; i < n; i++)
{
ics[i] = Math.Pow(10, 6 * random.NextDouble());
}
byte[] encoded = new byte[n * 2 + 8];
double[] decoded = new double[n];
double[] firstDecoded = new double[n];
double fixedPoint = MSNumpress.optimalSlofFixedPoint(ics, n);
int encodedBytes = MSNumpress.encodeSlof(ics, n, encoded, fixedPoint);
int decodedDoubles = MSNumpress.decodeSlof(encoded, encodedBytes, decoded);
for (int i = 0; i < n; i++)
{
firstDecoded[i] = decoded[i];
}
for (int i = 0; i < 5; i++)
{
MSNumpress.encodeSlof(decoded, n, encoded, fixedPoint);
MSNumpress.decodeSlof(encoded, encodedBytes, decoded);
}
Assert.AreEqual(n, decodedDoubles);
for (int i = 0; i < n; i++)
{
Assert.AreEqual(firstDecoded[i], decoded[i], double.Epsilon);
}
}