LWG3104 Fixing duration division

Author: jensmaurer

source/utilities.tex

@@ -19028,8 +19028,8 @@
 \rSec3[time.duration.nonmember]{\tcode{duration} non-member arithmetic}
 
 \pnum
-In the function descriptions that follow, \tcode{CD} represents the return type
-of the function.
+In the function descriptions that follow, unless stated otherwise,
+let \tcode{CD} represent the return type of the function.
 
 \indexlibrary{\idxcode{common_type}}%
 \begin{itemdecl}
@@ -19112,6 +19112,10 @@
 \end{itemdecl}
 
 \begin{itemdescr}
+\pnum
+Let \tcode{CD} be
+\tcode{common_type_t<duration<Rep1, Period1>, duration<Rep2, Period2>>}.
+
 \pnum
 \returns \tcode{CD(lhs).count() / CD(rhs).count()}.
 \end{itemdescr}