⎕JSON Comparaison Tolerance

[PGilbert]

When I do the following:

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    ⎕JSON 0.04+⍳10
[1.04,2.04,3.04,4.04,5.04,6.04,7.04,8.039999999999999,9.039999999999999,10.04]

I would expect to get a 8.04 and 9.04 in the JSON character representation.

I am using v16. Is this normal ?

[petermsiegel]

Hmm.... In 17.1, it works as expected...

Code: Select all

⍝  Dyalog APL/S-64 Version 17.1.36845  (ALSO Dyalog APL/S-64 Version 17.0.36563)
       ⎕JSON 0.04+⍳10
[0.04,1.04,2.04,3.04,4.04,5.04,6.04,7.04,8.04,9.04]

[AndyS|Dyalog]

In 16.0 the code for ⎕xml (and indeed ⎕csv) used the standard c library functions for formatting. In 17.0 and later we changed them so that they now call the same formatting functions as used elsewhere in the interpreter. So yes, it is what I'd expect in 16.0.