Re: How to check a Float for NaN

> T : Long_Long_Integer := Long_Long_Integer ( N ) ;

Anon, this is nonsense. What you present is a type conversion Float to
Long_Long_Integer, which will not work (it will round to the next
nearest integer value or raise Constraint_Error if the float value is
out of range). What is really needed and will work is an unchecked
conversion (this will leave all bits unchanged).