/guava/guava/src/com/google/common/math/DoubleMath.java
increment = exponent >= 0 & !isPowerOfTwo ( x ) ; break;
increment = !isPowerOfTwo(x); break; case DOWN: increment = exponent < 0 & !isPowerOfTwo(x); break; case UP: <extra_id_0> case HALF_DOWN: case HALF_EVEN: case HALF_UP: double xScaled = scaleNormalize(x); increment = (xScaled * xScaled) > 2.0; break;