Examples with BigInteger edu.jas.arith.BigInteger used on opensource projects

Example 1 with BigInteger

use of edu.jas.arith.BigInteger in project symja_android_library by axkr.

the class Algebra method factorRational.

public static IAST factorRational(GenPolynomial<BigRational> polyRat, JASConvert<BigRational> jas, ISymbol head) {
    Object[] objects = jas.factorTerms(polyRat);
    GenPolynomial<edu.jas.arith.BigInteger> poly = (GenPolynomial<edu.jas.arith.BigInteger>) objects[2];
    FactorAbstract<edu.jas.arith.BigInteger> factorAbstract = FactorFactory.getImplementation(edu.jas.arith.BigInteger.ONE);
    SortedMap<GenPolynomial<edu.jas.arith.BigInteger>, Long> map;
    map = factorAbstract.factors(poly);
    IASTAppendable result = F.ast(head, map.size() + 1);
    java.math.BigInteger gcd = (java.math.BigInteger) objects[0];
    java.math.BigInteger lcm = (java.math.BigInteger) objects[1];
    if (!gcd.equals(java.math.BigInteger.ONE) || !lcm.equals(java.math.BigInteger.ONE)) {
        result.append(F.fraction(gcd, lcm));
    }
    for (SortedMap.Entry<GenPolynomial<edu.jas.arith.BigInteger>, Long> entry : map.entrySet()) {
        final GenPolynomial<BigInteger> key = entry.getKey();
        final Long value = entry.getValue();
        if (key.isONE() && value.equals(1L)) {
            continue;
        }
        if (value == 1L) {
            result.append(jas.integerPoly2Expr(key));
        } else {
            result.append(F.Power(jas.integerPoly2Expr(key), F.ZZ(value)));
        }
    }
    return result;
}

Example 2 with BigInteger

use of edu.jas.arith.BigInteger in project symja_android_library by axkr.

the class PartialFractionIntegrateGenerator method isQuadratic.

/**
 * Check if the polynomial has maximum degree 2 in 1 variable and return the coefficients.
 *
 * @param poly
 * @return <code>null</code> if the polynomials degree > 2 and number of variables <> 1
 */
public static boolean isQuadratic(GenPolynomial<BigInteger> poly, BigInteger[] result) {
    if (poly.degree() <= 2 && poly.numberOfVariables() == 1) {
        result[0] = BigInteger.ZERO;
        result[1] = BigInteger.ZERO;
        result[2] = BigInteger.ZERO;
        for (Monomial<BigInteger> monomial : poly) {
            BigInteger coeff = monomial.coefficient();
            ExpVector exp = monomial.exponent();
            for (int i = 0; i < exp.length(); i++) {
                result[(int) exp.getVal(i)] = coeff;
            }
        }
        return true;
    }
    return false;
}

Example 3 with BigInteger

use of edu.jas.arith.BigInteger in project symja_android_library by axkr.

the class Integrate method isQuadratic.

/**
	 * Check if the polynomial has maximum degree 2 in 1 variable and return the
	 * coefficients.
	 * 
	 * @param poly
	 * @return <code>false</code> if the polynomials degree > 2 and number of
	 *         variables <> 1
	 */
public static boolean isQuadratic(GenPolynomial<BigInteger> poly, BigInteger[] result) {
    if (poly.degree() <= 2 && poly.numberOfVariables() == 1) {
        result[0] = BigInteger.ZERO;
        result[1] = BigInteger.ZERO;
        result[2] = BigInteger.ZERO;
        for (Monomial<BigInteger> monomial : poly) {
            BigInteger coeff = monomial.coefficient();
            ExpVector exp = monomial.exponent();
            for (int i = 0; i < exp.length(); i++) {
                result[(int) exp.getVal(i)] = coeff;
            }
        }
        return true;
    }
    return false;
}