/**
 * @module age
 * B57-R4: `age` clipped log-normal distribution.
 *
 * Closed-form inverse-CDF via the Beasley–Springer–Moro `normInv` polynomial.
 * Parameters: μ = ln(36), σ = 0.35 → ~95% in [18, 80] (US Census median adult
 * age 2020 = 38.5). For tight bounds (`max - min < 20`), falls back to
 * uniform-int.
 *
 * Pure-`Math.*` only — D13 isomorphic.
 *
 * See B54 research report §2 / B57 spec R4.
 */
import type { Prng } from "../../types.js";
/**
 * Closed-form inverse of the standard normal CDF — `Φ⁻¹(u)` — via the
 * Beasley–Springer–Moro polynomial. `u ∈ (0, 1)` → standard-normal `z`.
 */
export declare function normInv(u: number): number;
/**
 * Clipped log-normal age draw centred on μ = ln(36), σ = 0.35.
 *
 * Tight-bound fallback (`max - min < 20`): uniform-int over `[min, max]`.
 */
export declare function age(prng: Prng, min?: number, max?: number): number;
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