xml - 这真的不是有效的 xs :decimal?

Question

这是 xmllint 告诉我的内容:

  '1024663.719008264462809917' is not a valid value of the atomic type 'xs:decimal'

是否有一些默认的有效位置数？不应该根据this .

更新:使用 xmllint 进行实验，小数点后 17 位有效，但小数点 18 位无效。

Answer 1

The official spec指出

All ·minimally conforming· processors ·must· support decimal numbers with a minimum of 18 decimal digits (i.e., with a ·totalDigits· of 18). However, ·minimally conforming· processors ·may· set an application-defined limit on the maximum number of decimal digits they are prepared to support, in which case that application-defined maximum number ·must· be clearly documented.

因此，虽然理论上数据类型允许任意精度的十进制数，但特定处理器可以限制其准备支持的值的范围。