Version 5.0 The LEDA User Manual

4.17 Counter ( counter )
1. Definition
The class counter can be used during profiling to count how often certain code is executed.
An example is given below.
#include < LEDA/system/counter.h >
2. Creation
counter
c(const string& name, bool report on destruction = true);
creates an instance c with the given name. If report on destruction
is true, then the counter reports its value upon destruction. The
initial value of the counter is zero.
counter c; creates an unnamed instance c and sets the report on destruction
flag to false. The initial value of the counter is zero.
3. Operations
void c.reset( ) sets the value of c to zero.
void
c.set value(const unsigned long val)
sets the value of c to val.
const unsigned long c.get value( ) returns the current value of c.
const unsigned long c.increment( ) increments c and returns its new value. (We also provide
the operator ++.)
void
c.set name(const string& name)
sets the name of c.
string c.get name( ) returns the name of c.
void
c.report on desctruction(bool do report = true)
sets the flag report on destruction to do report.
bool c.will report on desctruction( )
4. Example
returns whether c will issue a report upon its destruction.
In the example below we count how often the function fibonacci is executed.
#include