Method and system for immediate exponent normalization in a fast floating point adder
    1.
    发明授权
    Method and system for immediate exponent normalization in a fast floating point adder 有权
    快速浮点加法器中立即指数归一化的方法和系统

    公开(公告)号:US06275839B1

    公开(公告)日:2001-08-14

    申请号:US09173316

    申请日:1998-10-15

    IPC分类号: G06F742

    CPC分类号: G06F7/485 G06F7/49936

    摘要: A method and system for use in a data processing system is proposed, wherein the Input Exponent is used already in the subblocks of the mantissa addition. Early in the flow of a cycle, there are parts of the Potential exponent result generated and put together using zero detect signals and carry select signals of the Carry Select Adder of the mantissa addition. For the addition of two floating point numbers this reduces the number of required logic gates in the timing critical path. This allows a faster cycle time and/or less latency and/or more complex functions. The method and system according to the invention can be applied to adders of different mantissa widths or different exponent widths as well as power of radix 2.

    摘要翻译: 提出了一种在数据处理系统中使用的方法和系统,其中输入指数已经在尾数加法的子块中使用。 在一个周期的流程中,有一部分电位指数结果生成并使用零检测信号放在一起,并携带尾数加法器的加法选择加法器的选择信号。 为了增加两个浮点数,这减少了时序关键路径中所需逻辑门的数量。 这允许更快的周期时间和/或更少的等待时间和/或更复杂的功能。 根据本发明的方法和系统可以应用于不同尾数宽度或不同指数宽度的加法器以及基数2的幂。