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* The ability of [[IEEE 754#Exception handling|exceptional conditions]] (overflow, [[Division by zero|divide by zero]], etc.) to propagate through a computation in a benign manner and then be handled by the software in a controlled fashion.
These features would be inherited into IEEE 754-1985 (with the exception of the encoding of special values and exceptions), though the extended internal precision of x87 means it requires explicit rounding of intermediate results to match standard IEEE 754 results.<ref>{{cite web |last1=Goldberg |first1=David |title=What Every Computer Scientist Should Know About Floating-Point Arithmetic |url=https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html |website=docs.oracle.com}}</ref>
== Range of floating-point numbers ==
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