[6.x.x] Improvements to fn:format-number
#155
Merged
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Backport of #152
declare default decimal-formatanddeclare decimal-format; these can now be used byfn:format-numberfn:format-numberCloses fn:format-number - small number formatted with exponent fails eXist-db/exist#5943
All W3C QT3 format-number tests are now passing except:
1.
numberformat121andnumberformat122which raise ajava.lang.StackOverflowErrordue to a lack of tail-call-optimisation2.
numberformat127andnumberformat128which should fail on XQuery 1.0 and 3.0, and pass on XQuery 3.1. In Elemental these will pass on XQuery 1.0, 3.0, and 3.1.