/* For some machines GNU MP needs to define an auxiliary function: udiv_qrnnd (quotient, remainder, high_numerator, low_numerator, denominator) Divides a two-word unsigned integer, composed by the integers HIGH_NUMERATOR and LOW_NUMERATOR, by DENOMINATOR and places the quotient in QUOTIENT and the remainder in REMAINDER. HIGH_NUMERATOR must be less than DENOMINATOR for correct operation. If, in addition, the most significant bit of DENOMINATOR must be 1, then the pre-processor symbol UDIV_NEEDS_NORMALIZATION is defined to 1. */