#ifndef MSP_TIME_TIMEDELTA_H_
#define MSP_TIME_TIMEDELTA_H_
+#include <cstdlib>
#include <ctime>
#include <msp/strings/lexicalcast.h>
#include "rawtime.h"
class TimeDelta
{
private:
- RawTime usec;
+ RawTime usec = 0;
public:
/** Constructs a zero TimeDelta. */
- TimeDelta(): usec(0) { }
+ TimeDelta() = default;
/** Constructs a TimeDelta from a plain number. The purpose of this is to
- allow serialization together with the raw() function. For creating
- TimeDeltas with a specific length, see units.h. */
+ allow serialization together with the raw() function. */
explicit TimeDelta(RawTime u): usec(u) { }
/** Returns the raw number stored inside the TimeDelta. This should only be used
TimeDelta &operator+=(const TimeDelta &t) { usec += t.usec; return *this; }
TimeDelta operator-(const TimeDelta &t) const { return TimeDelta(usec-t.usec); }
TimeDelta &operator-=(const TimeDelta &t) { usec -= t.usec; return *this; }
+ TimeDelta operator-() const { return TimeDelta(-usec); }
template<typename T>
TimeDelta operator*(T a) const { return TimeDelta(RawTime(usec*a)); }
bool operator==(const TimeDelta &t) const { return usec==t.usec; }
bool operator!=(const TimeDelta &t) const { return usec!=t.usec; }
- operator const void *() const { return usec ? this : 0; }
+ explicit operator bool() const { return usec; }
};
template<typename T>
void operator<<(LexicalConverter &, const TimeDelta &);
+
+// Constants to be used in creation of TimeDeltas
+extern const TimeDelta zero;
+extern const TimeDelta usec;
+extern const TimeDelta msec;
+extern const TimeDelta sec;
+extern const TimeDelta min;
+extern const TimeDelta hour;
+extern const TimeDelta day;
+extern const TimeDelta week;
+
+inline TimeDelta abs(const TimeDelta &t) { return t>=zero ? t : -t; }
+using std::abs;
+
} // namespace Time
} // namespace Msp