omp_get_wtime
Returns a value in seconds of the time elapsed from some point.
double omp_get_wtime( );
Return Value
Returns a value in seconds of the time elapsed from some arbitrary, but consistent point.
Remarks
That point will remain consistent during program execution, making subsequent comparisons possible.
For more information, see 3.3.1 omp_get_wtime Function.
Example
// omp_get_wtime.cpp
// compile with: /openmp
#include "omp.h"
#include <stdio.h>
#include <windows.h>
int main() {
double start = omp_get_wtime( );
Sleep(1000);
double end = omp_get_wtime( );
double wtick = omp_get_wtick( );
printf_s("start = %.16g\nend = %.16g\ndiff = %.16g\n",
start, end, end - start);
printf_s("wtick = %.16g\n1/wtick = %.16g\n",
wtick, 1.0 / wtick);
}
start = 594255.3671159324 end = 594256.3664474116 diff = 0.9993314791936427 wtick = 2.793651148400146e-007 1/wtick = 3579545