19 lines
434 B
C
19 lines
434 B
C
|
#include <time.h>
|
||
|
|
#include <sys/time.h>
|
||
|
|
|
||
|
|
double
|
||
|
|
timeit(void (*callback)(void), int times)
|
||
|
|
{
|
||
|
|
struct timeval tv_before, tv_after;
|
||
|
|
gettimeofday(&tv_before,NULL);
|
||
|
|
for (int t = 0; t < times; ++t) {
|
||
|
|
callback();
|
||
|
|
}
|
||
|
|
gettimeofday(&tv_after,NULL);
|
||
|
|
|
||
|
|
double before = (double)tv_before.tv_sec + (double)tv_before.tv_usec / 1000000.0;
|
||
|
|
double after = (double)tv_after.tv_sec + (double)tv_after.tv_usec / 1000000.0;
|
||
|
|
|
||
|
|
return after-before;
|
||
|
|
}
|