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1. 发明公开

EP0192420A3 Method and apparatus for numerical division 失效
标题翻译：数值分析方法与装置
公开(公告)号：EP0192420A3
公开(公告)日：1987-12-09
申请号：EP86300988
申请日：1986-02-13
申请人： PRIME COMPUTER, INC.
发明人： Irukulla, Suren , Patel, Bimal V
IPC分类号： G06F07/52 , G06F07/49
CPC分类号： G06F7/535 , G06F7/49 , G06F7/4917 , G06F7/5375
摘要： The invention provides a method and apparatus for radix-p non-restoring division. The division process occurs in four phases. In a first phase, the input operands are transformed to produce a divisor lying in a designated numerical range. Next, a transitional phase involves generating an initial radix-p quotient digit from the transformed numerator. An iterative phase of the process generates successive partial remainders according to a recursive method. From the sign and a single radix-p digit of each of these partial remainders, the process generates a radix-β quotient digit. Further, a fourth phase, which may run concurrently with the transitional and iterative phases, involves accumulating succesively generated quotient digits to produce a final quotient value.

2. 发明授权

EP0192419B1 Method and apparatus for effecting range transformation in a digital circuitry 失效
标题翻译：在数字电路中影响范围变换的方法和装置
公开(公告)号：EP0192419B1
公开(公告)日：1991-07-10
申请号：EP86300987.4
申请日：1986-02-13
申请人： PRIME COMPUTER, INC.
发明人： Irukulla, Suren , Patel, Bimal V.
IPC分类号： G06F7/52 , G06F1/02
CPC分类号： G06F7/535 , G06F1/0356 , G06F2207/5354

3. 发明授权

EP0192420B1 Method and apparatus for numerical division 失效
标题翻译：数值分析方法与装置
公开(公告)号：EP0192420B1
公开(公告)日：1991-05-15
申请号：EP86300988.2
申请日：1986-02-13
申请人： PRIME COMPUTER, INC.
发明人： Irukulla, Suren , Patel, Bimal V
IPC分类号： G06F7/52 , G06F7/49
CPC分类号： G06F7/535 , G06F7/49 , G06F7/4917 , G06F7/5375

4. 发明公开

EP0192419A3 Method and apparatus for effecting range transformation in a digital circuitry 失效
标题翻译：在数字电路中影响范围变换的方法和装置
公开(公告)号：EP0192419A3
公开(公告)日：1987-12-09
申请号：EP86300987
申请日：1986-02-13
申请人： PRIME COMPUTER, INC.
发明人： Irukulla, Suren , Patel, Bimal V.
IPC分类号： G06F07/52 , G06F01/02
CPC分类号： G06F7/535 , G06F1/0356 , G06F2207/5354
摘要： The invention relates to a range transformation method for transforming the normalized divisor in a division calculation to a range wherein the transformed value differs from one by no more than the quantity 2 -n . The method and apparatus generate the transform multiplier value from a first high order "q" digits of the divisor and generate an out-of-range indicator signal from at least those same digits. The thus generated multiplier value is modified in response to the out-of-range indicator signal when an out-of-range condition is indicated. The apparatus employs a read-only-memory for enabling the generation of the transform multiplier value without requiring either large table look-up storage or multiplicative functions. As a result, various division methods requiring an initial transformation to provide a divisor which approaches one in value can be efficiently implemented.

5. 发明公开

EP0192420A2 Method and apparatus for numerical division 失效
标题翻译： Verfahren undGerätfürnumerische Division。
公开(公告)号：EP0192420A2
公开(公告)日：1986-08-27
申请号：EP86300988.2
申请日：1986-02-13
申请人： PRIME COMPUTER, INC.
发明人： Irukulla, Suren , Patel, Bimal V
IPC分类号： G06F7/52 , G06F7/49
CPC分类号： G06F7/535 , G06F7/49 , G06F7/4917 , G06F7/5375
摘要： The invention provides a method and apparatus for radix-p non-restoring division. The division process occurs in four phases. In a first phase, the input operands are transformed to produce a divisor lying in a designated numerical range. Next, a transitional phase involves generating an initial radix-p quotient digit from the transformed numerator. An iterative phase of the process generates successive partial remainders according to a recursive method. From the sign and a single radix-p digit of each of these partial remainders, the process generates a radix-β quotient digit. Further, a fourth phase, which may run concurrently with the transitional and iterative phases, involves accumulating succesively generated quotient digits to produce a final quotient value.
摘要翻译：本发明提供了一种用于基数β不恢复分割的方法和装置。分割过程分四个阶段进行。在第一阶段中，输入操作数被变换以产生位于指定数值范围内的除数。接下来，过渡阶段涉及从转换的分子生成初始的基数β商数。该过程的迭代阶段根据递归方法产生连续的部分余数。从符号和每个这些部分余数的单个基数β数字，该过程生成基数β商数。此外，可以与过渡和迭代阶段同时运行的第四阶段涉及累积随后生成的商数，以产生最终商值。

6. 发明公开

EP0192419A2 Method and apparatus for effecting range transformation in a digital circuitry 失效
标题翻译：用于在数字电路执行域变换方法和装置。
公开(公告)号：EP0192419A2
公开(公告)日：1986-08-27
申请号：EP86300987.4
申请日：1986-02-13
申请人： PRIME COMPUTER, INC.
发明人： Irukulla, Suren , Patel, Bimal V.
IPC分类号： G06F7/52 , G06F1/02
CPC分类号： G06F7/535 , G06F1/0356 , G06F2207/5354
摘要： The invention relates to a range transformation method for transforming the normalized divisor in a division calculation to a range wherein the transformed value differs from one by no more than the quantity 2 -n . The method and apparatus generate the transform multiplier value from a first high order "q" digits of the divisor and generate an out-of-range indicator signal from at least those same digits. The thus generated multiplier value is modified in response to the out-of-range indicator signal when an out-of-range condition is indicated. The apparatus employs a read-only-memory for enabling the generation of the transform multiplier value without requiring either large table look-up storage or multiplicative functions. As a result, various division methods requiring an initial transformation to provide a divisor which approaches one in value can be efficiently implemented.
摘要翻译：本发明涉及的范围内变换方法，用于通过不超过数量2 转化的归一化除数的除法计算的一系列worin的转化的值从一个不同。该方法和装置产生的从第1高顺序从至少那些相同位数变换乘数值除数的“Q”的数字和产生外的范围指示信号。当外的范围内的条件被表示这样生成的乘数的值响应于外的范围指示信号修改。该装置采用一个只读存储器，用于使变换乘法器值的生成，而不需要或大查表存储或乘法函数。其结果是，各个分割方法在初始转换需要提供一种在除数一个值，其方法可以高效地实现。

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