import type { ThreadOverWiresInput, ThreadOverWiresResult } from './types.js';
/**
 * Calculate thread measurement over wires (3-wire method).
 *
 * @formula (for 60° thread angle — metric/unified):
 *   bestWire = P / √3 ≈ 0.57735 × P
 *   d₂ = d − 0.6495 × P  (pitch diameter for 60°)
 *   M = d₂ + 3W − 1.5155 × P
 *
 * General formula:
 *   bestWire = P / (2 × cos(α/2))
 *   For 55° (Whitworth): bestWire = P / (2 × cos(27.5°))
 *   For 29° (Acme): bestWire = P / (2 × cos(14.5°))
 *
 * @reference Oberg, E. et al. "Machinery's Handbook", 31st Ed. — Thread measurement; ASME
 *   B1.2 — Gages and Gaging for Unified Inch Screw Threads (formalizes the 3-wire method this
 *   implements). The pitch-diameter-relative form used here (M = E + 3W − P·cot(α/2)/2) is
 *   algebraically identical to the more commonly quoted major-diameter-relative form for 60°
 *   threads (M = D − 1.5155P + 3W): substituting E = D − 0.6495P into the latter reduces to the
 *   former, since 0.6495 + 0.866025 ≈ 1.5155.
 *
 * @param input - Thread over wires parameters
 * @returns ThreadOverWiresResult with measurement, best wire, and pitch diameter
 */
export declare function threadOverWires(input: ThreadOverWiresInput): ThreadOverWiresResult;
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