Actual source code: PetscTime.c
petsc-3.10.5 2019-03-28
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      2:  #include <petscsys.h>
      3:  #include <petsctime.h>

      5: int main(int argc,char **argv)
      6: {
      7:   PetscLogDouble x,y;
      8:   int            i;

     11:   PetscInitialize(&argc,&argv,0,0);if (ierr) return ierr;
     12:   /* To take care of paging effects */
     13:   PetscTime(&y);

     15:   for (i=0; i<2; i++) {
     16:     PetscTime(&x);
     17:     PetscTime(&y);
     18:     PetscTime(&y);
     19:     PetscTime(&y);
     20:     PetscTime(&y);
     21:     PetscTime(&y);
     22:     PetscTime(&y);
     23:     PetscTime(&y);
     24:     PetscTime(&y);
     25:     PetscTime(&y);
     26:     PetscTime(&y);
     27:     fprintf(stdout,"%-15s : %e sec\n","PetscTime",(y-x)/10.0);
     28:   }
     29:   PetscTime(&x);
     30:   PetscSleep(10);
     31:   PetscTime(&y);
     32:   fprintf(stdout,"%-15s : %e sec - Slept for 10 sec \n","PetscTime",(y-x));
     33:   PetscFinalize();
     34:   return ierr;
     35: }