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1. 发明申请

US20080301213A1 DIVISION WITH RECTANGULAR MULTIPLIER SUPPORTING MULTIPLE PRECISIONS AND OPERAND TYPES 有权
标题翻译：具有矩形多用户支持多种精度和操作类型的部分
公开(公告)号：US20080301213A1
公开(公告)日：2008-12-04
申请号：US11756885
申请日：2007-06-01
申请人： Michael J. Schulte , Carl E. Lemonds, JR. , Dimitri Tan
发明人： Michael J. Schulte , Carl E. Lemonds, JR. , Dimitri Tan
IPC分类号： G06F7/483
CPC分类号： G06F7/4873 , G06F2207/5356
摘要： A division method includes determining a precision indicator for the division operation that indicates whether the quotient should be a single precision, double precision, or extended precision floating-point number. The division is performed at a rectangular multiplier using the Goldschmidt or Newton-Raphson algorithm. Each algorithm calculates one or more intermediate values in order to determine the quotient. For example, the Goldschmidt algorithm calculates a complement of a product of the dividend and an estimate of the reciprocal of the divisor. The quotient is determined based on a portion of one or more of these intermediate values. Because only a portion of the intermediate value is used, the division can be performed efficiently at the rectangular multiplier, and therefore the quotient can be determined more quickly and still achieve the desired level of precision.
摘要翻译：分割方法包括确定用于指示商是否应当是单精度，双精度或扩展精度浮点数的除法运算的精度指示符。使用Goldschmidt或Newton-Raphson算法在矩形乘法器上执行除法。每个算法计算一个或多个中间值以确定商。例如，Goldschmidt算法计算股息的乘积的互补和除数的倒数的估计。基于这些中间值中的一个或多个的一部分来确定商。因为仅使用中间值的一部分，所以可以在矩形乘法器上有效地执行除法，因此可以更快速地确定商并且仍然达到期望的精度水平。

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