Remove empty parentheses that don't mean empty parentheses

This change is related to the other changes where operators with function calling syntax are mentioned.

chapters/classes.tex

@@ -378,7 +378,7 @@ \subsection{Component Variability Prefixes discrete, parameter, constant}\double
   A \emph{discrete-time} variable \lstinline!vd! has a vanishing time derivative between events.
   Note that this is not the same as saying that \lstinline!der(vd)=0! almost everywhere,
   as the derivative is not even defined at the events, and it is not legal
-  to apply \lstinline!der()! to discrete-time variables as they are not continuous. During transient analysis the variable
+  to apply \lstinline!der! to discrete-time variables as they are not continuous. During transient analysis the variable
   can only change its value at event
   instants (see \autoref{events-and-synchronization}).
 \item

chapters/equations.tex

@@ -311,7 +311,7 @@ \subsubsection{Restrictions on Equations within When-Equations}\doublelabel{rest
 \item \lstinline!v = expr;!
 \item \lstinline!(out1, out2, out3, ...) = function_call_name(in1, in2, ...);!
 \item
-  operators \lstinline!assert()!, \lstinline!terminate()!, \lstinline!reinit()!
+  operators \lstinline!assert!, \lstinline!terminate!, \lstinline!reinit!
 \item
   For- and if-equations if the equations within the for- and
   if-equations satisfy these requirements.

chapters/operatorsandexpressions.tex

@@ -481,7 +481,7 @@ \subsubsection{Event Triggering Mathematical Functions}\doublelabel{event-trigge
 \lstinline!div(x,y)! & Returns the algebraic quotient \lstinline!x/y! with any fractional part
 discarded (also known as truncation toward zero).
 \begin{nonnormative}
-This is defined for \lstinline!/! in C99; in C89 the result for negative numbers is implementation-defined, so the standard function \lstinline!div()! must be used.
+This is defined for \lstinline!/! in C99; in C89 the result for negative numbers is implementation-defined, so the standard function \lstinline[language=C]!div! must be used.
 \end{nonnormative}
 Result and arguments shall have type \lstinline!Real! or \lstinline!Integer!. If
 either of the arguments is \lstinline!Real! the result is \lstinline!Real! otherwise
@@ -810,7 +810,7 @@ \subsubsection{spatialDistribution}\doublelabel{spatialdistribution}
 \end{lstlisting}
 
 Events are generated at the exact instants when the velocity
-changes sign -- if this is not needed, \lstinline!noEvent()! can be used to
+changes sign --- if this is not needed, \lstinline!noEvent! can be used to
 suppress event generation.
 
 If the velocity is known to be always positive, then \lstinline!out0! can be omitted, e.g.:
@@ -1009,7 +1009,7 @@ \subsubsection{homotopy}\doublelabel{homotopy}
 \subsubsection{semiLinear}\doublelabel{semilinear}
 
 (See definition of \lstinline!semiLinear! in \autoref{derivative-and-special-purpose-operators-with-function-syntax}). In some situations,
-equations with the \lstinline!semiLinear()! function become underdetermined if the
+equations with \lstinline!semiLinear! become underdetermined if the
 first argument (\lstinline!x!) becomes zero, i.e., there are an infinite number of
 solutions. It is recommended that the following rules are used to
 transform the equations during the translation phase in order to select
@@ -1363,7 +1363,7 @@ \subsection{Discrete-Time Expressions}\doublelabel{discrete-time-expressions}
   argument is non-discrete time expression and subtype of \lstinline!Real!.
   \begin{nonnormative}
   These will generate events, see \autoref{events-and-synchronization}.  Note that \lstinline!rem! and \lstinline!mod! generate events but are not discrete-time
-  expressions. In other words, relations inside \lstinline!noEvent()!, such as \lstinline!noEvent(x>1)!, are not discrete-time expressions.
+  expressions. In other words, relations inside \lstinline!noEvent!, such as \lstinline!noEvent(x>1)!, are not discrete-time expressions.
   \end{nonnormative}
 \item
   The functions \lstinline!pre!, \lstinline!edge!, and \lstinline!change! result in discrete-time

chapters/statemachines.tex

@@ -157,7 +157,7 @@ \section{State Machine Graphics}\doublelabel{state-machine-graphics}
 lines.
 \end{nonnormative}
 
-The annotation for graphics of \lstinline!transition()! has the following
+The annotation for graphics of \lstinline!transition! has the following
 structure: \lstinline[mathescape=true]!annotation(Line($\ldots$), Text($\ldots$))!; and for
 \lstinline!initialState()!: \emph{graphical-primitives}\lstinline[mathescape=true]!(Line($\ldots$))!; with \lstinline!Line!
 and \lstinline!Text! annotations defined in \autoref{annotations}.

chapters/stream.tex

@@ -405,11 +405,10 @@ \section{Stream Operator actualStream}\doublelabel{stream-operator-actualstream}
 \end{lstlisting}
 
 \begin{nonnormative}
-The \textbf{actualStream}(v) operator is typically used in two
-contexts:
+\lstinline!actualStream! is typically used in two contexts:
 \begin{lstlisting}[language=modelica]
-  der(U) = c.m_flow*actualStream(c.h_outflow);  // (1) energy balance equation
-  h_c = actualStream(c.h);                      // (2) monitoring the enthalpy at port c
+  der(U) = c.m_flow * actualStream(c.h_outflow);  // (1) energy balance equation
+  h_c = actualStream(c.h);                        // (2) monitoring the enthalpy at port c
 \end{lstlisting}
 In the case of equation (1), although \lstinline!actualStream!
 is discontinuous, the product with the flow variable is not, because
@@ -424,7 +423,7 @@ \section{Stream Operator actualStream}\doublelabel{stream-operator-actualstream}
 flowing through a port is. In this case, the user will probably want to
 see the change due to flow reversal at the exact instant, so an event
 should be generated. If the user doesn't bother, then he/she should
-enclose the right-hand side of (2) with \lstinline!noEvent()!. Since the output of
+enclose the right-hand side of (2) with \lstinline!noEvent!. Since the output of
 \lstinline!actualStream! will be discontinuous, it should not be used by itself to
 model physical behaviour (e.g., to compute densities used in momentum
 balances) --- \lstinline!inStream! should be used for this purpose.