| 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 |
| bsearch() | ANSI POSIX 1003.1 | No | Yes | Yes | Yes |
| btowc() | ANSI POSIX 1003.1 | No | No | Yes | Yes |
| bzero() | POSIX 1003.1 XSI | No | Yes | Yes | Yes |