int retval;
/* Initialize the library */
retval = PAPI_library_init(PAPI_VER_CURRENT);
if (retval != PAPI_VER_CURRENT) {
fprintf(stderr,"PAPI library init error!\n");
exit(1); }
if (PAPI_query_event(PAPI_TOT_INS) != PAPI_OK) {
fprintf(stderr,"No instruction counter? How lame.\n");
exit(1);
}