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#ifndef __CPU_BETA_CPU_SAT_COUNTER_HH__
#define __CPU_BETA_CPU_SAT_COUNTER_HH__
#include <stdint.h>
/**
* Private counter class for the internal saturating counters.
* Implements an n bit saturating counter and provides methods to
* increment, decrement, and read it.
* @todo Consider making this something that more closely mimics a
* built in class so you can use ++ or --.
*/
class SatCounter
{
public:
/**
* Constructor for the counter.
*/
SatCounter();
/**
* Constructor for the counter.
* @param bits How many bits the counter will have.
*/
SatCounter(unsigned bits);
/**
* Constructor for the counter.
* @param bits How many bits the counter will have.
* @param initial_val Starting value for each counter.
*/
SatCounter(unsigned bits, unsigned initial_val);
/**
* Sets the number of bits.
*/
void setBits(unsigned bits);
/**
* Increments the counter's current value.
*/
void increment();
/**
* Decrements the counter's current value.
*/
void decrement();
/**
* Read the counter's value.
*/
const uint8_t read() const
{
return counter;
}
private:
uint8_t maxVal;
uint8_t counter;
};
#endif // __CPU_BETA_CPU_SAT_COUNTER_HH__
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