You could check the standards document for C, and cross-check the IEEE arithmetic standard, which I think is IEEE 754.
This could work, especially if you can be reasonably sure that the C-compiler being used is actually standards-compliant, and the standard doesn't say something like "it's up to the compiler builder," which it almost certainly does, so the likely short answer to your question is "No." You may (probably will) have to take this up with members of the numerical analysis community, where they deal with this sort of issue all the time.
In reply to Re^3: Infinity and platforms
by swampyankee
in thread Infinity and platforms
by andreas1234567
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