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1.发明授权
公开(公告)号：US3873820A
公开(公告)日：1975-03-25
申请号：US43851174
申请日：1974-01-31
Applicant: IBM
Inventor： PARR JOSEPH WARD , SIH KWANG YUE
CPC classification number: G06F11/104
Abstract: Apparatus for detecting multiplication errors in digital computers where multiplication is executed by iterative addition. A predicted residue is generated for each iteration by modifying the residue of the previous partial product according to the multiplier bits in the current iteration and the multiplicand residue. The current partial product is obtained and its residue generated. The generated current partial product residue is compared to the predicted residue for the current iteration to determine whether a hardware error has occurred. The process is repeated for each iteration, thereby eliminating the possibility of offsetting errors.
Abstract translation: 用于检测通过迭代加法执行乘法的数字计算机中的乘法误差的装置。 通过根据当前迭代中的乘数位和被乘数残差修改先前部分乘积的残差，为每次迭代生成预测残差。 获得当前的部分积，并产生残留物。 将生成的当前部分乘积残差与当前迭代的预测残差进行比较，以确定是否发生硬件错误。 每次迭代重复该过程，从而消除了偏移错误的可能性。
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公开(公告)号：CA780571A
公开(公告)日：1968-03-12
申请号：CA780571D
Applicant: IBM
Inventor： HSIAO MU-YUE , SIH KWANG YUE
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公开(公告)号：DE2503152A1
公开(公告)日：1975-08-07
申请号：DE2503152
申请日：1975-01-27
Applicant: IBM
Inventor： PARR JOSEPH WARD , SIH KWANG YUE
Abstract: Apparatus for detecting multiplication errors in digital computers where multiplication is executed by iterative addition. A predicted residue is generated for each iteration by modifying the residue of the previous partial product according to the multiplier bits in the current iteration and the multiplicand residue. The current partial product is obtained and its residue generated. The generated current partial product residue is compared to the predicted residue for the current iteration to determine whether a hardware error has occurred. The process is repeated for each iteration, thereby eliminating the possibility of offsetting errors.
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