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| difftimeofday(3) | FreeBSD Library Functions Manual | difftimeofday(3) |
LIBRARY
#include <xtend/time.h> -lextend
SYNOPSIS
time_t difftimeofday(struct timeval *later, struct timeval *earlier)
ARGUMENTS
later, earlier: timeval structures populated by gettimeofday(3)
DESCRIPTION
difftimeofday() returns the difference, in microseconds, between two time values returned by gettimeofday(3). This function can be used to get a good estimate of the real time elapsed in a process between any two points (where calls to gettimeofday(3) are strategically placed.)Use of these functions should have minimal impact on run time, unless called many times to measure time of a function with a very short run time.
RETURN VALUES
The difference between the two times in microsecondsSEE ALSO
gettimeofday(2), xt_tic(3), xt_toc(3)
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