S_ISREG           526 opal/mca/hwloc/hwloc201/hwloc/include/private/misc.h #    define S_ISREG(m) ((m) & S_IFREG)
S_ISREG           145 opal/win32/win_compat.h #define S_ISREG(STAT_MODE)        ((STAT_MODE) & _S_IFREG)