[Oberon] Modulus on negative number

Skulski, Wojciech skulski at pas.rochester.edu
Wed May 17 08:54:05 CEST 2017


>> 1. Does Oberon support NaN? If not then maybe it should?
>> 2. Could the "undefined" become "defined as NaN" in all numerical cases which are now undefined?

>„NaN“ is a special value for floating point numbers defined in IEEE 754. In Oberon, DIV and MOD are defined on positive INTEGERs. Hence, no "NaN".

This is why I said "somewhat related". I understand the integer case, but how about the floating point? 

Do the NaNs depend on the hardware support? Is it wise to specify them in the language?


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