

    \filetitle{rngcmp}{Compare two IRIS date ranges}{dates/rngcmp}

	\paragraph{Syntax}

\begin{verbatim}
Flag = rngcmp(R1,R2)
\end{verbatim}

\paragraph{Input arguments}

\begin{itemize}
\itemsep1pt\parskip0pt\parsep0pt
\item
  \texttt{R1}, \texttt{R2} {[} numeric {]} - Two IRIS date ranges that
  will be compared.
\end{itemize}

\paragraph{Output arguments}

\begin{itemize}
\itemsep1pt\parskip0pt\parsep0pt
\item
  \texttt{Flag} {[} \texttt{true} \textbar{} \texttt{false} {]} - True
  if the two date ranges are the same.
\end{itemize}

\paragraph{Description}

An IRIS date range is distinct from a vector of dates in that only the
first and the last dates matter. Often, date ranges are context
sensitive. In that case, you can use \texttt{-Inf} for the start date
(meaning the earliest possible date in the given context) and
\texttt{Inf} for the end date (meaning the latest possible date in the
given context), or simply \texttt{Inf} for the whole range (meaning from
the earliest possible date to the latest possible date in the given
context).

\paragraph{Example}

\begin{verbatim}
r1 = qq(2010,1):qq(2020,4);
r2 = [qq(2010,1),qq(2020,4)];

rngcmp(r1,r2)
ans =
    1
\end{verbatim}


