[Cfp-interest 2501] encode*() and invalid DFP data

[Fred J. Tydeman]

What are the encode*() functions [7.12.16.*] supposed to do with
invalid DFP data?  
Undefined behaviour?
Treat them as NaN?

I assume that there are bit patterns that are invalid DFP.

Would it be better to have those functions return an int to 
indicate success or invalid data?


---
Fred J. Tydeman        Tydeman Consulting
tydeman at tybor.com      Testing, numerics, programming
+1 (702) 608-6093      Vice-chair of PL22.11 (ANSI "C")
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