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ARITHMETIC DEVICE FOR PERFORMING DIVISION OR SQUARE ROOT OPERATION OF FLOATING POINT NUMBER AND ARITHMETIC METHOD THEREFOR
ARITHMETIC DEVICE FOR PERFORMING DIVISION OR SQUARE ROOT OPERATION OF FLOATING POINT NUMBER AND ARITHMETIC METHOD THEREFOR
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机译:浮点数除法或平方根运算的算术装置及其算术方法
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摘要
When division X/Y of floating point numbers is performed, bit string data of a mantissa x including a fraction xf of X or a mantissa y including a fraction yf of Y is shifted in accordance with magnitude relation between them to perform a fraction computation. Thereby, a fraction division result in which the position of the most significant bit is fixed at a prescribed digit is generated. When a square root operation √Y is performed, a fraction square root operation result in which the position of the most significant bit is fixed at a prescribed digit is generated by an exception handling if all of the three conditions that all the bits in the fraction of Y are one, a difference between the exponent ye of Y and a bias value b is an odd number, and a rounding mode is a positive infinity direction are satisfied.
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