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# tbb::tick_count::interval_t Class Reference

Relative time interval. More...

`#include <tick_count.h>`

List of all members.

## Public Member Functions
| interval_t ()
| Construct a time interval representing zero time duration.
| interval_t (double sec)
| Construct a time interval representing sec seconds time duration.
double | seconds () const
| Return the length of a time interval in seconds.
interval_t & | operator+= (const interval_t &i)
| Accumulation operator.
interval_t & | operator-= (const interval_t &i)
| Subtraction operator.
## Friends
class | tbb::tick_count
interval_t | operator- (const tick_count &t1, const tick_count &t0)
| Extract the intervals from the tick_counts and subtract them.
interval_t | operator+ (const interval_t &i, const interval_t &j)
| Add two intervals.
interval_t | operator- (const interval_t &i, const interval_t &j)
| Subtract two intervals.

## Detailed Description

Relative time interval.

The documentation for this class was generated from the following file:

- tick_count.h

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