pub fn polynomial_roots(coeffs: &[f64]) -> Result<Vec<Complex>, SolversError>Expand description
Find all complex roots of a real polynomial (DESCENDING coefficients,
coeffs[0]·x^n + … + coeffs[n]) via the Durand–Kerner iteration.
Dependency-free and finds all n roots simultaneously; suitable for moderate degree.
Leading/trailing zeros are trimmed. Returns n roots (real roots have im ≈ 0).
Returns SolversError::ComputationError for a zero or non-finite polynomial.