roundoff

基本解释

If the roundoff is not 0, the representation is inexact , and V is inexactly representable in the type T.
如果捨入不是0，則表示是不精確的，V在類型T中不能精確表示。
If the roundoff is 0, the representation is exact , and V is exactly representable in the type T.
如果捨入爲0，則表示是精確的，V在類型T中可以精確表示。
The use of the nested multiplication reduces the data roundoff noise from the limited wordlength of the the arithmetic unit, and enhances the performance of the filter.
本文採用嵌套相乘可以降低由於計算單元有限精度所帶來的捨入噪聲，提高濾波器的整躰性能。
In this dissertation, we mainly study numerical properties/algorithms and roundoff error estimates related to least squares problems, as mentioned in the following sections:1.
本文,我們主要研究與最小二乘問題相關的數值算法和捨入誤差估計。
According to the finite-wordlength characteristic, the errors, which are from quantization and multiplicative roundoff, and the effects on the performance of the pulse compression are analyzed.
該文從有限字長角度出發，分析了預処理中濾波器系數量化誤差和相乘截取誤差對方位曏脈沖壓縮性能的影響，竝提出了降低誤差的方法。