| 摘要 |
PURPOSE:To perform fixed decimal point division at high speed similarly to integer division by shifting a divided to the side of an MSB by the bit number of a decimal part and obtaining the quotient and the remainder by performing integer division while regarding these components as integral data. CONSTITUTION:Concerning the divident and a divisor for which the format is L+2M bits, the M bits from the LSB are the decimal part and the L bits are expressed as an integral part in the fixed decimal point data, the divided is shifted to the side of an MSB by M bits, the integer division is performed while regarding this divided and the original divisor as the integral data, and the quotient is obtained while cutting off places less than the accuracy of the fixed decimal point. When the integer division is simply performed to the original divided and divisor without shifting the divided, the quotient less than the decimal point is cut off, and the quotient of the integer part alone is obtained. Since the integer division is performed after the divided is shifted by the bit (digit) number of the decimal part, the quotient is obtained while cutting off places less than the accuracy of the fixed decimal point of the format same as the divided and the divisor. |
