Package org.bouncycastle.pqc.math.ntru.polynomial

Class BigDecimalPolynomial

  • public class BigDecimalPolynomial
extends java.lang.Object
    A polynomial with BigDecimal coefficients. Some methods (like add) change the polynomial, others (like mult) do not but return the result as a new polynomial.

    • Constructor Detail

      • BigDecimalPolynomial

        public BigDecimalPolynomial​(BigIntPolynomial p)
        Constructs a BigDecimalPolynomial from a BigIntPolynomial. The two polynomials are independent of each other.
        Parameters:
        p - the original polynomial

    • Method Detail

      • halve

        public void halve()
        Divides all coefficients by 2.

      • mult

        public BigDecimalPolynomial mult​(BigIntPolynomial poly2)
        Multiplies the polynomial by another. Does not change this polynomial but returns the result as a new polynomial.
        Parameters:
        poly2 - the polynomial to multiply by
        Returns:
        a new polynomial

      • mult

        public BigDecimalPolynomial mult​(BigDecimalPolynomial poly2)
        Multiplies the polynomial by another, taking the indices mod N. Does not change this polynomial but returns the result as a new polynomial.
        Parameters:
        poly2 - the polynomial to multiply by
        Returns:
        a new polynomial

      • add

        public void add​(BigDecimalPolynomial b)
        Adds another polynomial which can have a different number of coefficients.
        Parameters:
        b - another polynomial

      • round

        public BigIntPolynomial round()
        Rounds all coefficients to the nearest integer.
        Returns:
        a new polynomial with BigInteger coefficients

      • clone

        public java.lang.Object clone()
        Makes a copy of the polynomial that is independent of the original.
        Overrides:
        clone in class java.lang.Object

      • getCoeffs

        public java.math.BigDecimal[] getCoeffs()