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xs：float

xs：float

xs：float

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Note that casting a value to a binary floating point type , such as xs: float , xs: double, or any one of their subtypes, may lose precision .

请注意，如果将值转换为二进制浮点类型（如 xs：float 、xs：double ）或它们的任意子类型，可能会丧失精度。

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