public void InterpolationNormalFormConstTest()
{
var pointContainer = new PointContainer2D <double, double>();
pointContainer.Add(1, 5);
var doubleField = new DoubleField();
var interpolator = new UnivarNormalFromInterpolator <double, double>(
pointContainer,
"x",
new DoubleToIntegerConversion(),
doubleField,
doubleField,
doubleField);
var actual = interpolator.Interpolate(0);
Assert.AreEqual(5, actual);
actual = interpolator.Interpolate(2);
Assert.AreEqual(5, actual);
var interpolationPol = interpolator.InterpolatingPolynomial;
var expected = new UnivariatePolynomialNormalForm <double>(5, 0, "x", doubleField);
Assert.AreEqual(expected, interpolationPol);
}
public void InterpolationNormalFormMultiPointTest()
{
var pointContainer = new PointContainer2D <double, double>();
var interpolationPoints = new double[] { 0, 1, -2, 3, -4 };
for (int i = 0; i < interpolationPoints.Length; ++i)
{
pointContainer.Add(interpolationPoints[i], 0);
}
var doubleField = new DoubleField();
var interpolator = new UnivarNormalFromInterpolator <double, double>(
pointContainer,
"x",
new DoubleToIntegerConversion(),
doubleField,
doubleField,
doubleField);
// Verifica os valores da interpolação.
for (int i = 0; i < interpolationPoints.Length; ++i)
{
var actual = interpolator.Interpolate(interpolationPoints[i]);
Assert.AreEqual(0, actual);
}
var interpolationPol = interpolator.InterpolatingPolynomial;
var expected = TestsHelper.ReadUnivarPolynomial(
"0",
doubleField,
new DoubleParser <string>(),
new DoubleToIntegerConversion(),
"x",
true);
Assert.AreEqual(expected, interpolationPol);
pointContainer.Add(5, -1);
pointContainer.Add(-6, 1);
for (int i = 0; i < interpolationPoints.Length; ++i)
{
var actual = interpolator.Interpolate(interpolationPoints[i]);
Assert.IsTrue(Math.Abs(actual - 0) < 0.000001);
}
var actualValue = interpolator.Interpolate(5);
Assert.IsTrue(Math.Abs(actualValue + 1) < 0.000001);
actualValue = interpolator.Interpolate(-6);
Assert.IsTrue(Math.Abs(actualValue - 1) < 0.000001);
}
