TRANSCENDENTAL AND NON-LINEAR COMPONENTS USING SERIES EXPANSION
    1.
    发明申请
    TRANSCENDENTAL AND NON-LINEAR COMPONENTS USING SERIES EXPANSION 审中-公开
    使用系列扩展的横向和非线性组件

    公开(公告)号:WO2013148619A1

    公开(公告)日:2013-10-03

    申请号:PCT/US2013/033788

    申请日:2013-03-26

    Applicant: APPLE INC.

    Abstract: In an embodiment, hardware implementing a transcendental or other non-linear function is based on a series expansion of the function. For example, a Taylor series expansion may be used as the basis. One or more of the initial terms of the Taylor series may be used, and may be implemented in hardware. In some embodiments, modifications to the Taylor series expansion may be used to increase the accuracy of the result. In one embodiment, a variety of bit widths for the function operands may be acceptable for use in a given implementation. A methodology for building a library of series-approximated components for use in integrated circuit design is provided which synthesizes the acceptable implementations and tests the results for accuracy. A smallest (area-wise) implementation which produces a desired level of accuracy may be selected as the library element.

    Abstract translation: 在一个实施例中,实现先验或其他非线性函数的硬件基于功能的一系列扩展。 例如,可以使用泰勒级数展开作为基础。 可以使用泰勒级数的一个或多个初始项,并且可以以硬件实现。 在一些实施例中,可以使用对泰勒级数展开的修改来提高结果的准确性。 在一个实施例中,功能操作数的各种位宽可以被接受以用于给定的实现。 提供了一种用于构建用于集成电路设计的串联近似组件库的方法,其综合了可接受的实现并且测试结果的准确性。 可以选择产生期望的准确度水平的最小(区域)实现作为库元件。

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