@std/math

import { clamp, modulo } from "@std/math";
import { assertEquals } from "@std/assert";

for (let n = -3; n <= 3; ++n) {
  const val = n * 12 + 5;
  // 无论加减多少个十二小时周期，五点总是五点
  assertEquals(modulo(val, 12), 5);
  assertEquals(clamp(val, 0, 11), n === 0 ? 5 : n > 0 ? 11 : 0);
}

deno add jsr:@std/math