Golang IntPolynomial.Degree Examples

Example #1

File: discriminant.go Project: swenson/mathx

// Discriminant returns the discriminant of this polynomial.
func Discriminant(p *poly.IntPolynomial) *mathx.Int {
	if p.Degree() == 2 {
		c, b, a := p.Coeff(0), p.Coeff(1), p.Coeff(2)
		ac4 := mathx.NewInt(4).Mul(a).Mul(c)
		return b.Mul(b).Sub(ac4)
	}
	return nil
}