hwloc_ffs          59 opal/mca/hwloc/hwloc201/hwloc/include/private/misc.h #    define hwloc_ffs(x) __builtin_ffs(x)
hwloc_ffs          77 opal/mca/hwloc/hwloc201/hwloc/include/private/misc.h #  define hwloc_ffs(x) ffs(x)