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[tab:meta.trans.cv] Simplify wording for add_{const,volatile,cv} #7852

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[tab:meta.trans.cv] Simplify wording for add_{const,volatile,cv} #7852

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26 changes: 18 additions & 8 deletions source/meta.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -1712,22 +1712,32 @@
\indexlibraryglobal{add_const}%
\tcode{template<class T>\br
struct add_const;} &
If \tcode{T} is a reference, function, or top-level const-qualified
type, then \tcode{type} denotes \tcode{T}, otherwise
\tcode{T const}. \\ \rowsep
The member typedef \tcode{type} denotes \tcode{const T}.
\begin{tailnote}
\keyword{const} has no effect when \tcode{T} is a reference, function, or
top-level const-qualified type.
\end{tailnote}
Comment on lines +1716 to +1719
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I'm not sure whether it's still worthy to talk about reference, function, or top-level cv-qualified types.

Also, I feel that it might make sense to group type_identity with these traits.

\\ \rowsep

\indexlibraryglobal{add_volatile}%
\tcode{template<class T>\br
struct add_volatile;} &
If \tcode{T} is a reference, function, or top-level volatile-qualified
type, then \tcode{type} denotes \tcode{T}, otherwise
\tcode{T volatile}. \\ \rowsep
The member typedef \tcode{type} denotes \tcode{volatile T}.
\begin{tailnote}
\keyword{volatile} has no effect when \tcode{T} is a reference, function, or
top-level volatile-qualified type.
\end{tailnote}
\\ \rowsep

\indexlibraryglobal{add_cv}%
\tcode{template<class T>\br
struct add_cv;} &
The member typedef \tcode{type} denotes
\tcode{add_const_t<add_volatile_t<T>>}. \\
The member typedef \tcode{type} denotes \tcode{const volatile T}.
\begin{tailnote}
\keyword{const} or \keyword{volatile} has no effect when \tcode{T} is a
reference, function, or top-level const- or volatile-qualified type, respectively.
\end{tailnote}
\\
\end{libreqtab2a}

\rSec3[meta.trans.ref]{Reference modifications}
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