ilog2              29 ompi/mca/topo/treematch/treematch/tm_bucket.c #define CmiLog2(VAL)  ilog2((int)(VAL))
ilog2             407 orte/mca/routed/debruijn/routed_debruijn.c     log_nranks = (int) ilog2 ((unsigned int)orte_process_info.num_procs) ;