[time.duration.nonmember] Replace type designator "CR" with its definition (#1985)

Author: jensmaurer

source/utilities.tex

@@ -19038,7 +19038,7 @@
 
 \pnum
 In the function descriptions that follow, \tcode{CD} represents the return type
-of the function. \tcode{CR(A, B)} represents \tcode{common_type_t<A, B>}.
+of the function.
 
 \indexlibrary{\idxcode{common_type}}%
 \begin{itemdecl}
@@ -19074,7 +19074,7 @@
 \begin{itemdescr}
 \pnum
 \remarks This operator shall not participate in overload
-resolution unless \tcode{Rep2} is implicitly convertible to \tcode{CR(Rep1, Rep2)}.
+resolution unless \tcode{Rep2} is implicitly convertible to \tcode{common_type_t<Rep1, Rep2>}.
 
 \pnum
 \returns \tcode{CD(CD(d).count() * s)}.
@@ -19090,7 +19090,7 @@
 \begin{itemdescr}
 \pnum
 \remarks This operator shall not participate in overload
-resolution unless \tcode{Rep1} is implicitly convertible to \tcode{CR(Rep1, Rep2)}.
+resolution unless \tcode{Rep1} is implicitly convertible to \tcode{common_type_t<Rep1, Rep2>}.
 
 \pnum
 \returns \tcode{d * s}.
@@ -19106,7 +19106,7 @@
 \begin{itemdescr}
 \pnum
 \remarks This operator shall not participate in overload
-resolution unless \tcode{Rep2} is implicitly convertible to \tcode{CR(Rep1, Rep2)}
+resolution unless \tcode{Rep2} is implicitly convertible to \tcode{common_type_t<Rep1, Rep2>}
 and \tcode{Rep2} is not a specialization of \tcode{duration}.
 
 \pnum
@@ -19135,7 +19135,7 @@
 \begin{itemdescr}
 \pnum
 \remarks This operator shall not participate in overload
-resolution unless \tcode{Rep2} is implicitly convertible to \tcode{CR(Rep1, Rep2)} and
+resolution unless \tcode{Rep2} is implicitly convertible to \tcode{common_type_t<Rep1, Rep2>} and
 \tcode{Rep2} is not a specialization of \tcode{duration}.
 
 \pnum