pub fn roundoff_growth_factor(operations: usize) -> Option<f64>Expand description
Wilkinson’s growth factor γ_k = k·ε/(1 − k·ε) for a sum of operations
floating-point operations.
None when k·ε ≥ 1 — a model so wide that the accumulated bound exceeds
the operands themselves, where no residual can be certified as roundoff and
the caller must not treat any fit as exact.