def METHOD_NAME(val_a, val_b):
    """
    Returns 1 if val_a < val_b, 0 otherwise. Constant time.
    :type val_a: int
    :type val_b: int
    :param val_a: an unsigned integer representable as a 32 bit value
    :param val_b: an unsigned integer representable as a 32 bit value
    :rtype: int
    """
    val_a &= 0xffffffff
    val_b &= 0xffffffff
    return (val_a^((val_a^val_b)|(((val_a-val_b)&0xffffffff)^val_b)))>>31