difftime : subtract two times

Synopsis

#include <time.h>
double difftime(time_t tim1, time_t tim2);
```### Description

Subtracts the two times in the arguments: `tim1 - tim2'.### Returns

The difference (in seconds) between tim2 and tim1, as a double.

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**Authoritative source**: BUSMASTER DITA help source `difftime.dita`, compiled into `BUSMASTER.CHM` with the application.