(j3.2006) READ unit ambiguity

Keith Bierman khbkhb
Mon Mar 5 11:52:20 EST 2012

> C812 (R819) The do-variable shall be a variable of type integer.
> Is that constraint really necessary?
Allowing floating point indices opens up large cans of portability worms. If memory serves that was the point of the constraint in days of yore (portability in terms of a consistent number of iterations or in some possible pathological cases infinite (or virtually so) if underflow and trapping to software interacted pessimally. 
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