This page is a snapshot from the LWG issues list, see the Library Active Issues List for more information and the meaning of NAD Concepts status.
Section: 99 [concept.comparison] Status: NAD Concepts Submitter: Alisdair Meredith Opened: 2009-03-11 Last modified: 2017-02-03
Priority: Not Prioritized
View all other issues in [concept.comparison].
View all issues with NAD Concepts status.
Addresses JP 33
LessThanComparable and EqualityComparable don't correspond to NaN.
Original proposed resolution:
Apply concept_map to these concepts at FloatingPointType.
[ Post Summit, Alisdair adds: ]
I don't understand the proposed resolution - there is no such thing as a 'negative' concept_map, and these concepts are auto concepts that match float/double etc. Also not clear how we are supposed to match values to concepts.
Recommend NAD and treat as a subset of issue 902.