/*****************************************************************************

 * This example demonstrates the usage of the high level function PAPI_ipc   *

 * which measures the number of instructions executed per cpu cycle          *

 *****************************************************************************/

/*****************************************************************************

 * The first call to PAPI_ipc initializes the PAPI library, set up the       *

 * counters to monitor PAPI_TOT_INS and PAPI_TOT_CYC events, and start the   *

 * counters. Subsequent calls will read the counters and return total real   *

 * time, total process time, total instructions, and the instructions per    *

 * cycle rate since the last call to PAPI_ipc.                               *

 *****************************************************************************/

#include <stdio.h>

#include <stdlib.h>

#include "papi.h"

main()

{ 

  float real_time, proc_time,ipc;

  long long ins;

  float real_time_i, proc_time_i, ipc_i;

  long long ins_i;

  int retval;

  if((retval=PAPI_ipc(&real_time_i,&proc_time_i,&ins_i,&ipc_i)) < PAPI_OK)

  { 

    printf("Could not initialise PAPI_ipc \n");

    printf("retval: %d\n", retval);

    exit(1);

  }

  your_slow_code();

  if((retval=PAPI_ipc( &real_time, &proc_time, &ins, &ipc))

  {    

    printf("retval: %d\n", retval);

    exit(1);

  }

  printf("Real_time: %f Proc_time: %f Total instructions: %lld IPC: %f\n", 

         real_time, proc_time,ins,ipc);

  /* clean up */

  PAPI_shutdown();

  exit(0);

}

int your_slow_code()

{

  int i;

  double  tmp=1.1;

  for(i=1; i<2000; i++)

  { 

    tmp=(tmp+100)/i;

  }

  return 0;

}