| Updated: October 28, 2024 |
| Function | Classification | Library | Cancel | ISR | Signal | Thread |
|---|---|---|---|---|---|---|
| c16rtomb() | C11 | libc | No | No | Yes | Yes |
| c32rtomb() | C11 | libc | No | No | Yes | Yes |
| cabs() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cabsf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cabsl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cache_fini() | QNX Neutrino | libcache | Yes | No | Yes | Yes |
| CACHE_FLUSH() | QNX Neutrino | libcache | No | Yes | Yes | Yes |
| cache_init() | QNX Neutrino | libcache | Yes | No | Yes | Yes |
| CACHE_INVAL() | QNX Neutrino | libcache | No | Yes | Yes | Yes |
| cacos() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cacosf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cacosl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cacosh() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cacoshf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cacoshl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| call_once() | C11 | libc | No | No | Yes | Yes |
| calloc() | ANSI, POSIX 1003.1 | libc | No | No | No | Yes |
| carg() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cargf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cargl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| casin() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| casinf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| casinl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| casinh() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| casinhf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| casinhl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| catan() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| catanf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| catanl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| catanh() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| catanhf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| catanhl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cbrt() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cbrtf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cbrtl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ccos() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ccosf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ccosl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ccosh() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ccoshf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ccoshl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ceil() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ceilf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ceill() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cexp() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cexpf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cexpl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cfgetispeed() | POSIX 1003.1 | libc | No | Yes | Yes | Yes |
| cfgetospeed() | POSIX 1003.1 | libc | No | Yes | Yes | Yes |
| cfgopen() | QNX Neutrino | libc | Yes | No | Yes | Yes |
| cfmakeraw() | Unix | libc | No | No | Yes | Yes |
| cfree() | Unix | libc | No | No | No | Yes |
| cfsetispeed() | POSIX 1003.1 | libc | No | Yes | Yes | Yes |
| cfsetospeed() | POSIX 1003.1 | libc | No | Yes | Yes | Yes |
| ChannelCreate() | QNX Neutrino | libc | No | No | Yes | Yes |
| ChannelCreate_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ChannelCreatePulsePool() | QNX Neutrino | libc | No | No | Yes | Yes |
| ChannelDestroy() | QNX Neutrino | libc | No | No | Yes | Yes |
| ChannelDestroy_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| chdir() | POSIX 1003.1 | libc | No | No | Yes | Yes |
| chmod() | POSIX 1003.1 | libc | No | No | Yes | Yes |
| chown() | POSIX 1003.1 | libc | No | No | Yes | Yes |
| chroot() | Legacy Unix | libc | No | No | No | Yes |
| cimag() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cimagf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cimagl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| clearenv() | QNX Neutrino | libc | No | No | No | Yes |
| clearerr() | ANSI, POSIX 1003.1 | libc | No | No | No | Yes |
| clearsockprefix() | QNX Neutrino | libsocket | No | No | No | Yes |
| ClientInfoExtFree() | QNX Neutrino | libc | No | No | Yes | Yes |
| clock() | ANSI, POSIX 1003.1 | libc | No | No | Yes | Yes |
| clock_getcpuclockid() | POSIX 1003.1 CPT | libc | No | No | Yes | Yes |
| clock_getres() | POSIX 1003.1 | libc | No | No | Yes | Yes |
| clock_gettime() | POSIX 1003.1 | libc | No | No | Yes | Yes |
| clock_nanosleep() | POSIX 1003.1 | libc | Yes | No | Yes | Yes |
| clock_settime() | POSIX 1003.1 | libc | No | No | Yes | Yes |
| ClockAdjust() | QNX Neutrino | libc | No | No | Yes | Yes |
| ClockAdjust_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ClockCycles() | QNX Neutrino | libc | No | Yes | Yes | Yes |
| ClockId() | QNX Neutrino | libc | No | No | Yes | Yes |
| ClockId_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ClockPeriod() | QNX Neutrino | libc | No | No | Yes | Yes |
| ClockPeriod_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ClockTime() | QNX Neutrino | libc | No | No | Yes | Yes |
| ClockTime_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| clog() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| clogf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| clogl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| close() | POSIX 1003.1 | libc | Yes | No | Yes | Yes |
| closedir() | POSIX 1003.1 | libc | Yes | No | No | Yes |
| closelog() | POSIX 1003.1 | libc | Yes | No | No | Yes |
| _cmdname() | QNX Neutrino | libc | No | No | No | Yes |
| CMPLX() | C11 | No | Yes | Yes | Yes | |
| CMPLXF() | C11 | No | Yes | Yes | Yes | |
| CMPLXL() | C11 | No | Yes | Yes | Yes | |
| cnd_broadcast() | C11 | libc | No | No | Yes | Yes |
| cnd_destroy() | C11 | libc | No | No | Yes | Yes |
| cnd_init() | C11 | libc | No | No | Yes | Yes |
| cnd_signal() | C11 | libc | No | No | Yes | Yes |
| cnd_timedwait() | C11 | libc | Yes | No | Yes | Yes |
| cnd_wait() | C11 | libc | Yes | No | Yes | Yes |
| confstr() | POSIX 1003.1 | libc | No | No | Yes | Yes |
| conj() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| conjf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| conjl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| connect() | POSIX 1003.1 | libsocket | Yes | No | No | Yes |
| ConnectAttach() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectAttach_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectClientInfo() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectClientInfo_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectClientInfoAble() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectClientInfoExt() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectDetach() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectDetach_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectFlags() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectFlags_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectServerInfo() | QNX Neutrino | libc | No | No | Yes | Yes |
| ConnectServerInfo_r() | QNX Neutrino | libc | No | No | Yes | Yes |
| copysign() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| copysignf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| copysignl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cos() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cosf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cosl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cosh() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| coshf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| coshl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cpow() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cpowf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cpowl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cproj() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cprojf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| cprojl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| creal() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| crealf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| creall() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| creat() | POSIX 1003.1 | libc | Yes | No | Yes | Yes |
| creat64() | Large-file support | libc | Yes | No | Yes | Yes |
| crypt() | POSIX 1003.1 XSI | liblogin | No | No | No | No |
| csin() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csinf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csinl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csinh() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csinhf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csinhl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csqrt() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csqrtf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| csqrtl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ctan() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ctanf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ctanl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ctanh() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ctanhf() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ctanhl() | C11, POSIX 1003.1 | libm, libm-sve | No | Yes | Yes | Yes |
| ctermid() | POSIX 1003.1 | libc | No | No | No | Read the Caveats |
| ctime() | POSIX 1003.1 OB | libc | No | No | Yes | No |
| ctime_r() | libc | No | No | Yes | Yes |