/**
 * For positive numbers, does `x % mod` as usual, but extends this pattern to
 * negatives and non-integers.
 *
 * For example:
 * - `posMod(-4, 4) = 0`
 * - `posMod(-3, 4) = 1`
 * - `posMod(-2, 4) = 2`
 * - `posMod(-1, 4) = 3`
 * - `posMod(0, 4) = 0`
 * - `posMod(1, 4) = 1`
 * - `posMod(2, 4) = 2`
 * - `posMod(3, 4) = 3`
 * - `posMod(4, 4) = 0`
 *
 * @param x The number to mod.
 * @param mod The mod factor.
 */
export declare function posMod(x: number, mod: number): number;