public void DetermineStatusWithDivergence()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <double>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have one to few iterations
double previous = 1;
for (var i = 0; i < Iterations - 1; i++)
{
previous *= 1 + Increase + 0.01;
var status = criterion.DetermineStatus(
i,
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { previous }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
// Add the final residual. Now we should have divergence
previous *= 1 + Increase + 0.01;
var status2 = criterion.DetermineStatus(
Iterations - 1,
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { previous }));
Assert.AreEqual(IterationStatus.Diverged, status2, "Status check fail.");
}
public void DetermineStatusWithDivergence()
{
const float Increase = 0.5f;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <Complex32>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have one to few iterations
float previous = 1;
for (var i = 0; i < Iterations - 1; i++)
{
previous *= 1 + Increase + 0.01f;
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(previous, 0) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
// Add the final residual. Now we should have divergence
previous *= 1 + Increase + 0.01f;
var status2 = criterion.DetermineStatus(
Iterations - 1,
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(previous, 0) }));
Assert.AreEqual(IterationStatus.Diverged, status2, "Status check fail.");
}
public void DetermineStatusWithDivergenceThroughNaN()
{
const float Increase = 0.5f;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <Complex32>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have to few iterations
for (var i = 0; i < Iterations - 5; i++)
{
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32((i + 1) * (Increase - 0.01f), 0) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
// Now make it fail by throwing in a NaN
var status2 = criterion.DetermineStatus(
Iterations,
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(float.NaN, 0) }));
Assert.AreEqual(IterationStatus.Diverged, status2, "Status check fail.");
}
public void DetermineStatusWithDivergenceThroughNaN()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <double>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have to few iterations
for (var i = 0; i < Iterations - 5; i++)
{
var status = criterion.DetermineStatus(
i,
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { (i + 1) * (Increase - 0.01) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
// Now make it fail by throwing in a NaN
var status2 = criterion.DetermineStatus(
Iterations,
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { double.NaN }));
Assert.AreEqual(IterationStatus.Diverged, status2, "Status check fail.");
}
public void DetermineStatusWithIllegalIterationNumberThrowsArgumentOutOfRangeException()
{
var criterion = new DivergenceStopCriterion<double>(0.5, 15);
Assert.That(() => criterion.DetermineStatus(
-1,
Vector<double>.Build.Dense(3, 4),
Vector<double>.Build.Dense(3, 5),
Vector<double>.Build.Dense(3, 6)), Throws.TypeOf<ArgumentOutOfRangeException>());
}
public void DetermineStatusWithIllegalIterationNumberThrowsArgumentOutOfRangeException()
{
var criterion = new DivergenceStopCriterion <double>(0.5, 15);
Assert.That(() => criterion.DetermineStatus(
-1,
Vector <double> .Build.Dense(3, 4),
Vector <double> .Build.Dense(3, 5),
Vector <double> .Build.Dense(3, 6)), Throws.TypeOf <ArgumentOutOfRangeException>());
}
public void DetermineStatusWithTooFewIterations()
{
const float Increase = 0.5f;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <Complex32>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have to few iterations
for (var i = 0; i < Iterations - 1; i++)
{
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32((i + 1) * (Increase + 0.1f), 0) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
}
public void DetermineStatusWithTooFewIterations()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <double>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have to few iterations
for (var i = 0; i < Iterations - 1; i++)
{
var status = criterion.DetermineStatus(
i,
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { (i + 1) * (Increase + 0.1) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
}
public void DetermineStatusWithNoDivergence()
{
const float Increase = 0.5f;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <float>(Increase, Iterations);
// Add residuals. We should not diverge because we won't have enough increase
for (var i = 0; i < Iterations * 2; i++)
{
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { 1.0f }),
new DenseVector(new[] { 1.0f }),
new DenseVector(new[] { (i + 1) * (Increase - 0.01f) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
}
public void ResetCalculationState()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <double>(Increase, Iterations);
// Add residuals. Blow it up instantly
var status = criterion.DetermineStatus(
1,
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { 1.0 }),
Vector <double> .Build.Dense(new[] { double.NaN }));
Assert.AreEqual(IterationStatus.Diverged, status, "Status check fail.");
// Reset the state
criterion.Reset();
Assert.AreEqual(Increase, criterion.MaximumRelativeIncrease, "Incorrect maximum");
Assert.AreEqual(Iterations, criterion.MinimumNumberOfIterations, "Incorrect iteration count");
Assert.AreEqual(IterationStatus.Continue, criterion.Status, "Status check fail.");
}
public void ResetCalculationState()
{
const float Increase = 0.5f;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion <Complex32>(Increase, Iterations);
// Add residuals. Blow it up instantly
var status = criterion.DetermineStatus(
1,
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(float.NaN, 0) }));
Assert.AreEqual(IterationStatus.Diverged, status, "Status check fail.");
// Reset the state
criterion.Reset();
Assert.AreEqual(Increase, criterion.MaximumRelativeIncrease, "Incorrect maximum");
Assert.AreEqual(Iterations, criterion.MinimumNumberOfIterations, "Incorrect iteration count");
Assert.AreEqual(IterationStatus.Continue, criterion.Status, "Status check fail.");
}
public void DetermineStatusWithDivergenceThroughNaN()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion<Complex>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have to few iterations
for (var i = 0; i < Iterations - 5; i++)
{
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex((i + 1)*(Increase - 0.01), 0) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
// Now make it fail by throwing in a NaN
var status2 = criterion.DetermineStatus(
Iterations,
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(double.NaN, 0) }));
Assert.AreEqual(IterationStatus.Diverged, status2, "Status check fail.");
}
public void DetermineStatusWithNoDivergence()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion<Complex>(Increase, Iterations);
// Add residuals. We should not diverge because we won't have enough increase
for (var i = 0; i < Iterations*2; i++)
{
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex((i + 1)*(Increase - 0.01), 0) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
}
public void DetermineStatusWithTooFewIterations()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion<double>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have to few iterations
for (var i = 0; i < Iterations - 1; i++)
{
var status = criterion.DetermineStatus(
i,
Vector<double>.Build.Dense(new[] { 1.0 }),
Vector<double>.Build.Dense(new[] { 1.0 }),
Vector<double>.Build.Dense(new[] { (i + 1)*(Increase + 0.1) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
}
public void DetermineStatusWithDivergence()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion<Complex>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have one to few iterations
double previous = 1;
for (var i = 0; i < Iterations - 1; i++)
{
previous *= 1 + Increase + 0.01;
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(previous, 0) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
// Add the final residual. Now we should have divergence
previous *= 1 + Increase + 0.01;
var status2 = criterion.DetermineStatus(
Iterations - 1,
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(previous, 0) }));
Assert.AreEqual(IterationStatus.Diverged, status2, "Status check fail.");
}
public void ResetCalculationState()
{
const double Increase = 0.5;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion<Complex>(Increase, Iterations);
// Add residuals. Blow it up instantly
var status = criterion.DetermineStatus(
1,
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(1.0, 0) }),
new DenseVector(new[] { new Complex(double.NaN, 0) }));
Assert.AreEqual(IterationStatus.Diverged, status, "Status check fail.");
// Reset the state
criterion.Reset();
Assert.AreEqual(Increase, criterion.MaximumRelativeIncrease, "Incorrect maximum");
Assert.AreEqual(Iterations, criterion.MinimumNumberOfIterations, "Incorrect iteration count");
Assert.AreEqual(IterationStatus.Continue, criterion.Status, "Status check fail.");
}
public void DetermineStatusWithTooFewIterations()
{
const float Increase = 0.5f;
const int Iterations = 10;
var criterion = new DivergenceStopCriterion<Complex32>(Increase, Iterations);
// Add residuals. We should not diverge because we'll have to few iterations
for (var i = 0; i < Iterations - 1; i++)
{
var status = criterion.DetermineStatus(
i,
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32(1.0f, 0) }),
new DenseVector(new[] { new Complex32((i + 1)*(Increase + 0.1f), 0) }));
Assert.AreEqual(IterationStatus.Continue, status, "Status check fail.");
}
}