这些类型是不可变的，就是说整数对象一旦创建，其值便不可更改。
These types are immutable, which means that when an integer object is created, its value cannot be changed.
数据类型是96位的有符号整数，以10的可变次幂进行缩放。
Data type is a 96-bit signed integer scaled by a variable power of 10.
该模块利用可变大小的窗口滤波插值进行图像像素重采样，能同时适用整数和分数缩放比例的图像缩放。
The module is designed for both integral and fractional scaling ratios and utilizes variable filter window for calculating pixels of a scaled image to realize pixel re-sampling.
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