Function floored

test/compute-engine/interval-arithmetic.test.ts:361–361

(a: number, b: number)

    const result = floor({ lo: 1.5, hi: 2.5 });
    expect(result.kind).toBe('singular');
    if (result.kind === 'singular') {
      expect(result.continuity).toBe('right');
      expect(result.at).toBe(2);
    }