Rationale for Ada 2012
9.3.3 Support for IEEE 559: 1989
The proposal was to provide full support for all
aspects of IEEE 559 arithmetic such as NaNs (a NaN is Not A Number).
This would have necessitated adding attributes such as S'Infinity,
S'Is_NaN, S'Finite
and so on plus a package Ada.Numerics.IEC_559.
The proposal was abandoned because it would have
had a big impact on implementers and it was not clear that there was
sufficient demand. It was not reconsidered for Ada 2012.
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