assertThat(Chars.constrainToRange((char) 1, (char) 3, (char) 5)).isEqualTo((char) 3);
    assertThat(Chars.constrainToRange((char) 255, (char) 250, (char) 254)).isEqualTo((char) 254);
    assertThat(Chars.constrainToRange((char) 5, (char) 2, (char) 2)).isEqualTo((char) 2);
    assertThrows(
        IllegalArgumentException.class, () -> Chars.constrainToRange((char) 1, (char) 3, (char) 2));
  }

    checkInitialCapacity(2, 0, 1);
    checkInitialCapacity(2, 1, 1);
    checkInitialCapacity(2, 2, 1);
    checkInitialCapacity(2, 3, 2);
    checkInitialCapacity(2, 4, 2);
    checkInitialCapacity(2, 5, 4);
    checkInitialCapacity(2, 6, 4);
    checkInitialCapacity(2, 7, 4);
    checkInitialCapacity(2, 8, 4);

    checkInitialCapacity(4, 0, 1);
    checkInitialCapacity(4, 1, 1);

    checkInitialCapacity(2, 0, 1);
    checkInitialCapacity(2, 1, 1);
    checkInitialCapacity(2, 2, 1);
    checkInitialCapacity(2, 3, 2);
    checkInitialCapacity(2, 4, 2);
    checkInitialCapacity(2, 5, 4);
    checkInitialCapacity(2, 6, 4);
    checkInitialCapacity(2, 7, 4);
    checkInitialCapacity(2, 8, 4);

    checkInitialCapacity(4, 0, 1);
    checkInitialCapacity(4, 1, 1);

    checkInitialCapacity(2, 0, 1);
    checkInitialCapacity(2, 1, 1);
    checkInitialCapacity(2, 2, 1);
    checkInitialCapacity(2, 3, 2);
    checkInitialCapacity(2, 4, 2);
    checkInitialCapacity(2, 5, 4);
    checkInitialCapacity(2, 6, 4);
    checkInitialCapacity(2, 7, 4);
    checkInitialCapacity(2, 8, 4);

    checkInitialCapacity(4, 0, 1);
    checkInitialCapacity(4, 1, 1);

    checkInitialCapacity(2, 0, 1);
    checkInitialCapacity(2, 1, 1);
    checkInitialCapacity(2, 2, 1);
    checkInitialCapacity(2, 3, 2);
    checkInitialCapacity(2, 4, 2);
    checkInitialCapacity(2, 5, 4);
    checkInitialCapacity(2, 6, 4);
    checkInitialCapacity(2, 7, 4);
    checkInitialCapacity(2, 8, 4);

    checkInitialCapacity(4, 0, 1);
    checkInitialCapacity(4, 1, 1);

(*P256Point, error) { s, err := new(p256OrdElement).SetBytes(scalar) if err != nil { return nil, err } // Start scanning the window from the most significant bits. We move by // 5 bits at a time and need to finish at -1, so -1 + 5 * 51 = 254. index := 254 sel, sign := boothW5(s.Rsh(index)) // sign is always zero because the boothW5 input here is at // most two bits long, so the top bit is never set. _ = sign // Neither Select nor Add have exceptions for the point at infinity / // selector zero, so we...