| Function | Classification | Cancel | ISR | Signal | Thread |
|---|---|---|---|---|---|
| basename() | POSIX 1003.1 XSI | No | Yes | Yes | Yes |
| bcmp() | POSIX 1003.1 XSI | No | Yes | Yes | Yes |
| bcopy() | POSIX 1003.1 XSI | No | Yes | Yes | Yes |
| bind() | POSIX 1003.1 | No | No | No | Yes |
| bindresvport() | Unix | No | No | No | No |
| brk() | Legacy Unix | No | No | No | Yes |
| bsearch() | ANSI POSIX 1003.1 | No | Yes | Yes | Yes |
| bt_get_backtrace() | QNX Neutrino | No | No | Yes | Yes |
| bt_init_accessor() | QNX Neutrino | No | No | Yes | Yes |
| bt_load_memmap() | QNX Neutrino | No | No | No | Yes |
| bt_release_accessor() | QNX Neutrino | No | Yes | Yes | Yes |
| bt_set_flags() | QNX Neutrino | No | Yes | Yes | Yes |
| bt_sprn_memmap() | QNX Neutrino | No | No | Yes | Yes |
| bt_sprnf_addrs() | QNX Neutrino | No | No | No | Yes |
| bt_translate_addrs() | QNX Neutrino | No | No | Yes | Yes |
| bt_unload_memmap() | QNX Neutrino | No | No | No | Yes |
| btowc() | ANSI POSIX 1003.1 | No | No | Yes | Yes |
| bzero() | POSIX 1003.1 XSI | No | Yes | Yes | Yes |