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NAMEdifftime - calculate time difference
#include <time.h> double difftime(time_t time1, time_t time0);
DESCRIPTIONThe fBdifftime()fP function returns the number of seconds elapsed between time fItime1fP and time fItime0fP, represented as a double. The two times are specified in calendar time, which represents the time elapsed since the Epoch (00:00:00 on January 1, 1970, Coordinated Universal Time (UTC)).
CONFORMING TOSVID 3, BSD 4.3, ISO 9899
NOTESThis function is required by ANSI C. On a POSIX system, time_t is an arithmetic type, and one could just define
SEE ALSOdate(1), gettimeofday(2), time(2), ctime(3), gmtime(3), localtime(3)