difftime(3C)


difftime -- compute the difference between two calendar times

Synopsis

   #include <time.h> 
   

double difftime(time_t time1, time_t time0);

Description

difftime computes the difference between two calendar times. difftime returns the difference (time1-time0) expressed in seconds as a double. This function is provided because there are no general arithmetic properties defined for type time_t.

References

ctime(3C)
30 January 1998
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