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3. 发明授权

US5754460A Method for performing signed division 失效
标题翻译：执行签名划分的方法
公开(公告)号：US5754460A
公开(公告)日：1998-05-19
申请号：US451571
申请日：1995-05-26
申请人： Hon-Kai John Tam
发明人： Hon-Kai John Tam
IPC分类号： G06F7/52 , G06F7/535
CPC分类号： G06F7/535 , G06F2207/5353 , G06F7/49905 , G06F7/49936 , G06F7/49994
摘要： A method for signed integer division. Typically, the two's complement of the dividend is stored as an adjusted dividend. The upper half of the adjusted dividend is shifted left one bit. The LSB of the upper half of the adjusted dividend is set equal to the MSB of the lower half of the adjusted dividend. The lower half of the adjusted dividend is shifted left one bit. The LSB of the lower half of the adjusted dividend is set equal to zero. A temporary register stores the result of subtracting a constant from the adjusted divisor. The temporary register is updated by subtracting it from the adjusted upper dividend, The adjusted divisor is subtracted from the adjusted dividend, then the adjusted dividend is shifted left one bit and stored in the upper half of the adjusted dividend. A temporary remainder is set equal to the upper half of the adjusted dividend. A first temporary quotient is set equal to the lower half of the adjusted dividend. A second temporary quotient is set equal to the first temporary quotient if the sign of the dividend and divisor are equal; if not, the second temporary quotient is set equal to the complement of the first temporary quotient. If the dividend is negative, the remainder is set equal to the temporary remainder; if not, the remainder is set equal to the complement of the temporary remainder. The quotient is then set equal to the second temporary quotient.
摘要翻译：一种有符号整数除法的方法。通常情况下，二元红利的补充存储为调整后的股息。调整后的红利的上半部分向左移一位。被调整股利上半部分的LSB设定为等于调整后股息下半部分的最高点。被调整股息的下半部分向左移一位。调整后的红利的下半部分的LSB设置为零。临时寄存器存储从调整除数减去常数的结果。通过从调整后的上分红中减去临时注册表来更新。从被调整股息中减去调整后的除数，然后将调整后的股息左移一位，并存储在被调整股息的上半部分。临时余款设定为等于调整后股息的上半部分。第一个临时商定为等于调整后股息的下半部分。如果股息和除数的符号相等，则第二临时商被设置为等于第一临时商; 如果不是，则将第二临时商设定为等于第一临时商的补数。如果股利为负数，剩余部分设定为等于临时余额; 如果没有，剩余部分设置为等于临时剩余部分的补码。然后将商设置为等于第二临时商。

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