DIFFTIME(3C)DIFFTIME(3C)NAMEdifftime - compute difference between two calendar times
SYNOPSIS
#include <time.h>
double difftime (time_t time1, time_t time0);
DESCRIPTIONdifftime computes the difference between two calendar times: time1 -
time0.
SEE ALSOmktime(3C), time(2).
DIAGNOSTICSdifftime returns the difference expressed in seconds as a double.
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