#include <papi.h>
int PAPI_get_multiplex( int EventSet );

#include fpapi.h
PAPIF_get_multiplex( C_INT EventSet, C_INT check )

EventSet an integer handle for a PAPI event set as created by PAPI_create_eventset

PAPI_OK
PAPI_EINVAL One or more of the arguments is invalid, or the EventSet is already multiplexed.
PAPI_ENOEVST The EventSet specified does not exist.
PAPI_EISRUN The EventSet is currently counting events.
PAPI_ENOMEM Insufficient memory to complete the operation.

*   int EventSet = PAPI_NULL;
*   int ret;
*    
*   // Create an empty EventSet
*   ret = PAPI_create_eventset(&EventSet);
*   if (ret != PAPI_OK) handle_error(ret);
*   
*   // Bind it to the CPU component
*   ret = PAPI_assign_eventset_component(EventSet, 0);
*   if (ret != PAPI_OK) handle_error(ret);
*   
*   // Check  current multiplex status
*   ret = PAPI_get_multiplex(EventSet);
*   if (ret == TRUE) printf("This event set is ready for multiplexing0&.")
*   if (ret == FALSE) printf("This event set is not enabled for multiplexing0&.")
*   if (ret < 0) handle_error(ret);
*   
*   // Turn on multiplexing
*   ret = PAPI_set_multiplex(EventSet);
*   if ((ret == PAPI_EINVAL) && (PAPI_get_multiplex(EventSet) == TRUE))
*     printf("This event set already has multiplexing enabled0);
*   else if (ret != PAPI_OK) handle_error(ret);
*   

PAPI_multiplex_init

PAPI_set_opt

PAPI_create_eventset