/**
 * Linear-interpolated CIE 1931 2° CMFs at the given wavelength.
 * Returns 0 outside [360, 830] nm.
 *
 * @param {number[]} out length>=3
 * @param {number} wavelength_nm wavelength in nanometers
 * @returns {number[]} out
 */
export function xyz_cmf_tabulated(out: number[], wavelength_nm: number): number[];
/**
 * CIE 1931 2° XYZ color matching functions (tabulated, CVRL)
 *
 * Source: CVRL (Colour & Vision Research Laboratory), 1 nm steps.
 * Wavelength range: 360–830 nm inclusive.
 * Values are unweighted CMFs (no illuminant). Weighting by SPD (e.g., D65)
 * should be applied by the caller during spectral integration when needed.
 *
 * @see http://www.cvrl.org/cie.htm
 */
export const XYZ_CMF_MIN_NM: 360;
export const XYZ_CMF_MAX_NM: 830;
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