Variable precision floating point multiply-add circuit
    42.
    发明授权
    Variable precision floating point multiply-add circuit 有权
    可变精度浮点加法电路

    公开(公告)号:US09104474B2

    公开(公告)日:2015-08-11

    申请号:US13730390

    申请日:2012-12-28

    CPC classification number: G06F7/483 G06F7/5443 G06F9/30014 G06F2207/382

    Abstract: Embodiments of the present invention may provide methods and circuits for energy efficient floating point multiply and/or add operations. A variable precision floating point circuit may determine the certainty of the result of a multiply-add floating point calculation in parallel with the floating-point calculation. The variable precision floating point circuit may use the certainty of the inputs in combination with information from the computation, such as, binary digits that cancel, normalization shifts, and rounding, to perform a calculation of the certainty of the result. A floating point multiplication circuit may determine whether a lowest portion of a multiplication result could affect the final result and may induce a replay of the multiplication operation when it is determined that the result could affect the final result.

    Abstract translation: 本发明的实施例可以提供用于节能浮点乘法和/或添加操作的方法和电路。 可变精度浮点电路可以与浮点计算并行地确定乘法加法浮点计算的结果的确定性。 可变精度浮点电路可以结合来自计算的信息,例如取消,归一化移位和舍入的二进制数字来使用输入的确定性来执行结果的确定性的计算。 浮点乘法电路可以确定乘法结果的最低部分是否可能影响最终结果,并且当确定结果可能影响最终结果时可以引起乘法运算的重放。

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