Division system.

摘要

A commercial instruction processor executes a decimal divide instruction by counting the number of subtractions by the divisor resulting in a positive remainder to develop the quotient. If a subtraction results in a negative partial remainder, a restoring addition follows the restore the partial remainder to a positive value. The most significant decimal digit of the divisor is compared with the most significant decimal digit of the remainder after each subtraction pass to predict if the next subtraction pass would result in a negative remainder. If so, a quotient decimal digit is stored in a memory, the divisor is shifted one decimal digit position to the right, and a series of subtraction passes are made to develop the next quotient decimal digit.