/** Return `value` ceiled to the nearest multiple of `step`.
 *
 *  `ceilTo(7, 5)` → `10`. When `step <= 0` the result is `value`.
 */
export declare function ceilTo(value: number, step: number): number;
/** True non-negative modulo: `euclideanMod(value, divisor)`.
 *
 *  Unlike JavaScript's `%` operator, the result is always in `[0, divisor)`
 *  regardless of the sign of `value`. Throws when `divisor === 0` (programmer
 *  error: a zero divisor is always a bug at the call site).
 *
 *  ```ts
 *  euclideanMod(-1, 4) // 3  (JS: -1)
 *  euclideanMod(7, 4)  // 3
 *  ```
 */
export declare function euclideanMod(value: number, divisor: number): number;
/** Return `value` floored to the nearest multiple of `step`.
 *
 *  `floorTo(7, 5)` → `5`. When `step <= 0` the result is `value`.
 */
export declare function floorTo(value: number, step: number): number;
/** Return the fractional part of `value` — the part after the decimal point.
 *
 *  Always returns a value in `[0, 1)` for positive inputs. For negative inputs
 *  the sign is preserved (e.g. `fract(-1.3)` → `-0.3`), mirroring GLSL `fract`.
 */
export declare function fract(value: number): number;
/** Round `value` to the nearest multiple of `step`.
 *
 *  `roundTo(7, 5)` → `5`; `roundTo(8, 5)` → `10`. When `step <= 0` the
 *  result is `value`. Also useful as a snap / quantize primitive.
 */
export declare function roundTo(value: number, step: number): number;
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