/** Vector lengths below this value are treated as zero (normalize fall-back). */
export declare const EPS_NORMALIZE = 1e-12;
/** Matrix determinants below this value are treated as singular (invert falls back to identity, D-P1). */
export declare const EPS_DET = 1e-8;
/** Threshold for treating two unit vectors as nearly collinear / opposite (fromUnitVectors / slerp inputs). */
export declare const EPS_QUAT_PARALLEL = 0.000001;
/** In quat.slerp, |dot| above this value is treated as endpoint coincidence; falls back to nlerp (D-P6). */
export declare const EPS_SLERP_DOT_LIMIT = 0.000001;
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