Rationale for Ada 2012

John Barnes
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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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