public void RunTest_IntegerPolynomial()
{
var integerDomain = new IntegerDomain();
var fractionField = new FractionField <int>(integerDomain);
var integerParser = new IntegerParser <string>();
var conversion = new ElementToElementConversion <int>();
var fractionConversion = new ElementFractionConversion <int>(integerDomain);
string variableName = "x";
var univarPolDomain = new UnivarPolynomEuclideanDomain <Fraction <int> >(
variableName,
fractionField);
var lagAlg = new LagrangeAlgorithm <UnivariatePolynomialNormalForm <Fraction <int> > >(univarPolDomain);
var firstValue = TestsHelper.ReadFractionalCoeffsUnivarPol <int, IntegerDomain>(
"(x-1/2)*(x+1/3)",
integerDomain,
integerParser,
fractionConversion,
variableName);
var secondValue = TestsHelper.ReadFractionalCoeffsUnivarPol <int, IntegerDomain>(
"(x-1/2)*(x-1)",
integerDomain,
integerParser,
fractionConversion,
variableName);
var gcd = TestsHelper.ReadFractionalCoeffsUnivarPol <int, IntegerDomain>(
"x-1/2",
integerDomain,
integerParser,
fractionConversion,
variableName);
var result = lagAlg.Run(firstValue, secondValue);
var mainGcdCoeff = result.GreatestCommonDivisor.GetLeadingCoefficient(fractionField);
var monicGcd = result.GreatestCommonDivisor.Multiply(
fractionField.MultiplicativeInverse(mainGcdCoeff),
fractionField);
Assert.AreEqual(gcd, monicGcd);
var firstTermExpression = univarPolDomain.Multiply(result.FirstFactor, result.FirstItem);
var secondTermExpression = univarPolDomain.Multiply(result.SecondFactor, result.SecondItem);
var actualExpression = univarPolDomain.Add(firstTermExpression, secondTermExpression);
Assert.AreEqual(result.GreatestCommonDivisor, actualExpression);
actualExpression = univarPolDomain.Multiply(result.GreatestCommonDivisor, result.FirstCofactor);
Assert.AreEqual(result.FirstItem, actualExpression);
actualExpression = univarPolDomain.Multiply(result.GreatestCommonDivisor, result.SecondCofactor);
Assert.AreEqual(result.SecondItem, actualExpression);
}
public void RunTest_BigInteger()
{
var integerDomain = new BigIntegerDomain();
var lagAlg = new LagrangeAlgorithm <BigInteger>(integerDomain);
var firstValue = BigInteger.Parse("91986494539681");
var secondValue = BigInteger.Parse("19645957369297");
var result = lagAlg.Run(firstValue, secondValue);
Assert.AreEqual(9590959, result.GreatestCommonDivisor);
var actualExpression = result.FirstFactor * result.FirstItem + result.SecondFactor * result.SecondItem;
Assert.AreEqual(result.GreatestCommonDivisor, actualExpression);
actualExpression = result.GreatestCommonDivisor * result.FirstCofactor;
Assert.AreEqual(result.FirstItem, actualExpression);
actualExpression = result.GreatestCommonDivisor * result.SecondCofactor;
Assert.AreEqual(result.SecondItem, actualExpression);
}
public void RunTest_Integer()
{
var integerDomain = new IntegerDomain();
var lagAlg = new LagrangeAlgorithm <int>(integerDomain);
var firstValue = 1176;
var secondValue = 180;
var result = lagAlg.Run(firstValue, secondValue);
Assert.AreEqual(12, result.GreatestCommonDivisor);
var actualExpression = result.FirstFactor * result.FirstItem + result.SecondFactor * result.SecondItem;
Assert.AreEqual(result.GreatestCommonDivisor, actualExpression);
actualExpression = result.GreatestCommonDivisor * result.FirstCofactor;
Assert.AreEqual(result.FirstItem, actualExpression);
actualExpression = result.GreatestCommonDivisor * result.SecondCofactor;
Assert.AreEqual(result.SecondItem, actualExpression);
}
