公开(公告)号：US20070282936A1

公开(公告)日：2007-12-06

申请号：US11421425

申请日：2006-05-31

申请人： Tarun K. Tandon ,  Insung Kang ,  Vic Manzella

发明人： Tarun K. Tandon ,  Insung Kang ,  Vic Manzella

IPC分类号： G06F1/02

CPC分类号： G06F7/556

摘要： Provided are digital processing apparatuses and techniques for estimating the fractional exponentiation of the base number 2, i.e., 2f where f is a fractional value. In one representative embodiment, a calculation is made of a folded quantity, which is equal to 1−f if f is greater than a specified threshold and is equal to f otherwise; then, a function of the folded quantity is calculated; and finally, the function of the folded quantity is subtracted from the fraction f and 1 is added. In another embodiment, 2f is approximated by calculating 1+f′ in the binary numbering system.

摘要翻译： 提供了用于估计基数2的分数取幂的数字处理装置和技术，即，f是小数值。 在一个代表性实施例中，计算折叠量，如果f大于指定阈值，则等于1-f，否则等于f; 然后，计算折叠量的函数; 最后，从分数f中减去折叠量的函数，加入1。 在另一个实施例中，通过在二进制编号系统中计算1 + f'来近似2f。

公开(公告)号：US07644116B2

公开(公告)日：2010-01-05

申请号：US11421425

申请日：2006-05-31

申请人： Tarun K. Tandon ,  Insung Kang ,  Vic Manzella

发明人： Tarun K. Tandon ,  Insung Kang ,  Vic Manzella

IPC分类号： G06F7/552

CPC分类号： G06F7/556

摘要： Provided are digital processing apparatuses and techniques for estimating the fractional exponentiation of the base number 2, i.e., 2f where f is a fractional value. In one representative embodiment, a calculation is made of a folded quantity, which is equal to 1−f if f is greater than a specified threshold and is equal to f otherwise; then, a function of the folded quantity is calculated; and finally, the function of the folded quantity is subtracted from the fraction f and 1 is added. In another embodiment, 2f is approximated by calculating 1+f′ in the binary numbering system.

摘要翻译： 提供了用于估计基数2的分数取幂的数字处理装置和技术，即2f，其中f是分数值。 在一个代表性实施例中，计算折叠量，如果f大于指定阈值，则等于1-f，否则等于f; 然后，计算折叠量的函数; 最后，从分数f中减去折叠量的函数，加入1。 在另一实施例中，通过在二进制编号系统中计算1 + f'来近似2f。