roundoff

基本解釋

If the roundoff is not 0, the representation is inexact , and V is inexactly representable in the type T.
如果舍入不是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.
如果舍入為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.
本文采用嵌套相乘可以降低由于計算單元有限精度所帶來的舍入噪聲，提高濾波器的整體性能。
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(guān)的數(shù)值算法和舍入誤差估計。
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(fā)，分析了預處理中濾波器系數(shù)量化誤差和相乘截取誤差對方位向脈沖壓縮性能的影響，并提出了降低誤差的方法。