public void CorrectlyMultiplyByAnotherVector()
{
var valuesX = new[] { new RealNumber(1.0), new RealNumber(2.0), new RealNumber(-1.0) };
IVector vectorX = new Vector(valuesX);
var valuesY = new[] { new RealNumber(4.0), new RealNumber(-2.0), new RealNumber(0.0) };
IVector vectorY = new Vector(valuesY);
var result = vectorX.Mul(vectorY);
Assert.That(result.GetMod().X, Is.EqualTo(new RealNumber(0.0).GetMod().X));
}
public void CorrectlyMultiplyByFuzzyNumber()
{
var values = new[] { new RealNumber(1.0), new RealNumber(2.0), new RealNumber(-1.0) };
IVector vector = new Vector(values);
var multiplier = new RealNumber(3.0);
vector = vector.Mul(multiplier);
Assert.That(vector.Length, Is.EqualTo(3));
Assert.That(vector[0].GetMod().X, Is.EqualTo(new RealNumber(3.0).GetMod().X));
Assert.That(vector[1].GetMod().X, Is.EqualTo(new RealNumber(6.0).GetMod().X));
Assert.That(vector[2].GetMod().X, Is.EqualTo(new RealNumber(-3.0).GetMod().X));
}
public void ProvideCommutativeMultiplication()
{
var valuesX = new[] { new RealNumber(1.0), new RealNumber(2.0), new RealNumber(-1.0) };
IVector vectorX = new Vector(valuesX);
var valuesY = new[] { new RealNumber(4.0), new RealNumber(-2.0), new RealNumber(0.0) };
IVector vectorY = new Vector(valuesY);
var resultXY = vectorX.Mul(vectorY);
var resultYX = vectorY.Mul(vectorX);
Assert.That(resultXY.GetMod().X, Is.EqualTo(resultYX.GetMod().X));
}