NAME

difftime − computes the difference between two calendar times

SYNOPSIS

#include <time.h>

double difftime(time_t time1, time_t time0);

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. 

SEE ALSO

ctime(3V)

NOTES

The unbundled ANSI C compiler provides ANSI versions of most of the system header files, which are used automatically at compile time. For example, the directive
#include <stdio.h> will use the file provided by this compiler, rather than /usr/include/stdio.h. 

Sun Release 4.1  —  Last change: 21 June 1994