UDIV_NEEDS_NORMALIZATION
# if UDIV_TIME > 2 * UMUL_TIME || UDIV_NEEDS_NORMALIZATION
# elif UDIV_NEEDS_NORMALIZATION
# elif UDIV_NEEDS_NORMALIZATION
# if UDIV_TIME > 2 * UMUL_TIME || UDIV_NEEDS_NORMALIZATION
# elif UDIV_NEEDS_NORMALIZATION
# elif UDIV_NEEDS_NORMALIZATION
#ifndef UDIV_NEEDS_NORMALIZATION