difftime(3C) SDK R4.11 difftime(3C)
NAME
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.
Considerations for Threads Programming
+---------+-----------------------------+
| | async- |
|function | reentrant cancel cancel |
| | point safe |
+---------+-----------------------------+
|difftime | Y N N |
+---------+-----------------------------+
REFERENCES
reentrant(3), ctime(3C)
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