Method isPowerOfTwo

output/java_guava/1.4.19/IntMath.java:99–101

Returns true if x represents a power of two. This differs from Integer.bitCount(x) == 1, because Integer.bitCount(Integer.MIN_VALUE) == 1, but Integer#MIN_VALUE is not a power of two.

(int x)

  public static boolean isPowerOfTwo(int x) {
    return x > 0 & (x & (x - 1)) == 0;
  }

  /**
   * Returns 1 if {@code x < y} as unsigned integers, and 0 otherwise. Assumes that x - y fits into