System and method of adaptive memory structure for data pre-fragmentation or pre-segmentation
    21.
    发明授权
    System and method of adaptive memory structure for data pre-fragmentation or pre-segmentation 有权
    用于数据预碎片或预分割的自适应存储器结构的系统和方法

    公开(公告)号:US07574578B2

    公开(公告)日:2009-08-11

    申请号:US11118422

    申请日:2005-05-02

    IPC分类号: G06F5/10

    摘要: A method and apparatus are disclosed for prefragmenting or presegmenting data. A data protocol type and length are provided. Based on the type and length, a linked list memory buffer structure is determined. Locations within the memory buffer structure for storage of data therein is also determined allowing for sufficient unused memory therein to support one of a fragmentation operation and a segmentation operation subsequent to memory allocation. As such, further memory allocation during a fragmentation operation or a segmentation operation is obviated. The determined memory buffer structure is then allocated.

    摘要翻译: 公开了用于预分段或预分割数据的方法和装置。 提供数据协议类型和长度。 基于类型和长度,确定链表列表存储器缓冲结构。 用于存储其中的数据的存储器缓冲结构内的位置也被确定,允许其中足够的未使用的存储器支持在存储器分配之后的分段操作和分段操作之一。 因此,在分段操作或分段操作期间进一步的存储器分配被消除。 然后分配所确定的存储器缓冲器结构。

    Karatsuba based multiplier and method
    22.
    发明申请
    Karatsuba based multiplier and method 审中-公开
    基于Karatsuba的乘数和方法

    公开(公告)号:US20070083585A1

    公开(公告)日:2007-04-12

    申请号:US11245182

    申请日:2005-10-07

    IPC分类号: G06F7/00

    CPC分类号: G06F7/5324

    摘要: A method of multiplying large integers is disclosed. Two large numbers, x and y, are provided. values are determined in accordance with the Karatsuba multiplication process based on x and y. A first and second value according to the Karatsuba multiplication method are also determined. The third value for use in accordance with the Karatsuba multiplication method is determined by determining C′=(x1+x2)[m−1:0]*(y1+y2)[m−1:0] and determining C=C′+((y1+y2)[2m:2m] AND (x1+x2)[m−1:0]+(x1+x2)[2m:2m] AND (y1+y2)[m:0])

    摘要翻译: 公开了一种乘以大整数的方法。 提供了两个大数字x和y。 值根据基于x和y的Karatsuba乘法过程确定。 还确定了根据Karatsuba倍增法的第一和第二值。 根据Karatsuba倍增法使用的第三值通过确定C'=(x 1 + x 2 x 2)[m-1:0] *(y &lt; 1&gt; +&lt; 2&lt; 2&gt;)[m-1:0]并确定C = C'+((y 1 + y 2) [2m:2m] AND(x 1 + x 2)[m-1:0] +(x 1 < + x 2)[2m:2m] AND(y 1 + y 2)[m:0])<< m,其中< <是一个按位移位操作,其中AND是通过在第一个操作数内的一个比特的布尔AND和第二个操作数中的每个比特执行,其中D [j:k]是指D的第j个到第k个比特。