Re: [PR] Fix printDecimal regression for decimal values wide r than a long [poi-xmlbeans]

czpilar commented on PR #96:
URL: https://github.com/apache/poi-xmlbeans/pull/96#issuecomment-5431861306

   The negative-scale case reproduces exactly as described - I added the three cases as a test against the operand-swap version first, and 1E+20 failed with the same "Value can't be converted to long". So the swap only narrowed the window rather than closing it.
   
   Switched to signum(). Agreed it is the right level to fix this at: the branch is a zero test, signum() states that directly, and it takes MathUtil off the serialization path. Also dropped the && evaluation-order comment, which no longer applies.
   
   Tests now cover positive scale, negative scale and zero with both signs of scale. XsTypeConverterTest (32), TestMathUtil (14), SchemaTypesTests and NumeralsTests all pass.


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