import type { CuspHeightInput, CuspHeightResult } from './types.js';
/**
 * Calculate the scallop (cusp) height for ball end mill surface finishing.
 *
 * @formula
 *   h = r − √(r² − (stepover/2)²)
 *   Ra ≈ h / 4 (approximate)
 *
 * @reference Oberg, E. et al. "Machinery's Handbook", 31st Ed. — Ball-nose milling.
 *
 * @param input - Cusp height parameters
 * @returns CuspHeightResult with scallop height and approximate Ra
 */
export declare function cuspHeight(input: CuspHeightInput): CuspHeightResult;
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