R Function Classification Cancel ISR Signal Thread raise() ANSI POSIX 1003.1 No No Yes Yes rand() ANSI POSIX 1003.1 No No Yes No rand_r() POSIX 1003.1 TSF No No Yes Yes random() POSIX 1003.1 XSI No No Yes No rcmd() Unix Yes No No No rcmd_af() Unix Yes No No No rdchk() Unix No No Yes Yes re_comp() Legacy Unix No No Yes Yes re_exec() Legacy Unix No No Yes Yes read() POSIX 1003.1 XSI Yes No Yes Yes readblock() QNX Neutrino Yes No Yes Yes readcond() QNX Neutrino Yes No Yes Yes readdir() POSIX 1003.1 Yes No No No readdir64() Large-file support Yes No No No readdir_r() POSIX 1003.1 TSF Yes No Yes Yes readlink() POSIX 1003.1 No No Yes Yes readv() POSIX 1003.1 XSI Yes No Yes Yes realloc() ANSI POSIX 1003.1 No No No Yes realpath() POSIX 1003.1 XSI No No Yes Yes recv() POSIX 1003.1 Yes No No Yes recvfrom() POSIX 1003.1 Yes No No Yes recvmsg() POSIX 1003.1 Yes No No Yes regcomp() POSIX 1003.1 No No No Yes regerror() POSIX 1003.1 No No Yes Yes regexec() POSIX 1003.1 No No No Yes regfree() POSIX 1003.1 No No No Yes remainder() ANSI POSIX 1003.1 No No No Yes remainderf() ANSI POSIX 1003.1 No No No Yes remainderl() ANSI POSIX 1003.1 No No No Yes remove() ANSI POSIX 1003.1 Yes No No Yes remque() POSIX 1003.1 XSI No Yes Yes Yes rename() ANSI POSIX 1003.1 Yes No Yes Yes res_init() Unix Yes No No No res_mkquery() Unix Yes No No No res_query() Unix Yes No No No res_querydomain() Unix Yes No No No res_search() Unix Yes No No No res_send() Unix Yes No No No resmgr_attach() QNX Neutrino Yes No No Yes resmgr_block() QNX Neutrino Yes No No Yes resmgr_context_alloc() QNX Neutrino Yes No No Yes resmgr_context_free() QNX Neutrino Yes No No Yes resmgr_detach() QNX Neutrino Yes No No Yes resmgr_devino() QNX Neutrino Yes No No Yes resmgr_handle_grow() QNX Neutrino No No No Yes resmgr_handle_tune() QNX Neutrino No No No Yes resmgr_handler() QNX Neutrino Yes No No Yes resmgr_iofuncs() QNX Neutrino No No No Yes resmgr_msg_again() QNX Neutrino No No No Yes resmgr_msgread() QNX Neutrino No No Yes Yes resmgr_msgreadv() QNX Neutrino No No Yes Yes resmgr_msgreply() QNX Neutrino No No Yes Yes resmgr_msgreplyv() QNX Neutrino No No Yes Yes resmgr_msgwrite() QNX Neutrino No No Yes Yes resmgr_msgwritev() QNX Neutrino No No Yes Yes resmgr_ocb() QNX Neutrino No No No Yes resmgr_open_bind() QNX Neutrino No No No Yes resmgr_pathname() QNX Neutrino No No Yes Yes resmgr_unbind() QNX Neutrino No No No Yes rewind() ANSI POSIX 1003.1 Yes No No Yes rewinddir() POSIX 1003.1 Yes No Yes Yes rindex() POSIX 1003.1 XSI No Yes Yes Yes rint() ANSI POSIX 1003.1 No No No Yes rintf() ANSI POSIX 1003.1 No No No Yes rintl() ANSI POSIX 1003.1 No No No Yes rmdir() POSIX 1003.1 No No Yes Yes round() ANSI POSIX 1003.1 No No No Yes roundf() ANSI POSIX 1003.1 No No No Yes roundl() ANSI POSIX 1003.1 No No No Yes rresvport() Unix Yes No No Yes rresvport_af() Unix Yes No No Yes rsrcdbmgr_attach() QNX Neutrino Yes No Yes Yes rsrcdbmgr_create() QNX Neutrino Yes No Yes Yes rsrcdbmgr_destroy() QNX Neutrino Yes No Yes Yes rsrcdbmgr_detach() QNX Neutrino Yes No Yes Yes rsrcdbmgr_devno_attach() QNX Neutrino Yes No Yes Yes rsrcdbmgr_devno_detach() QNX Neutrino Yes No Yes Yes rsrcdbmgr_query_name() QNX Neutrino Yes No Yes Yes ruserok() Unix Yes No No No Related linksFull Safety Information