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__after_morecore_hook(3)malloc debugging variables (DEPRECATED)✨
__clone2(2)create a child process✨
__fbufsize(3)interfaces to stdio FILE structure✨
__flbf(3)interfaces to stdio FILE structure✨
__fpending(3)interfaces to stdio FILE structure✨
__fpurge(3)purge a stream✨
__freadable(3)interfaces to stdio FILE structure✨
__freading(3)interfaces to stdio FILE structure✨
__free_hook(3)malloc debugging variables (DEPRECATED)✨
__fsetlocking(3)interfaces to stdio FILE structure✨
__fwritable(3)interfaces to stdio FILE structure✨
__fwriting(3)interfaces to stdio FILE structure✨
__malloc_hook(3)malloc debugging variables (DEPRECATED)✨
__malloc_initialize_hook(3)malloc debugging variables (DEPRECATED)✨
__memalign_hook(3)malloc debugging variables (DEPRECATED)✨
__ppc_get_timebase(3)get the current value of the Time Base Register on Power architecture and its frequency.✨
__ppc_get_timebase_freq(3)get the current value of the Time Base Register on Power architecture and its frequency.✨
__ppc_mdoio(3)Hint the processor to release shared resources✨
__ppc_mdoom(3)Hint the processor to release shared resources✨
__ppc_set_ppr_low(3)Set the Program Priority Register✨
__ppc_set_ppr_med(3)Set the Program Priority Register✨
__ppc_set_ppr_med_high(3)Set the Program Priority Register✨
__ppc_set_ppr_med_low(3)Set the Program Priority Register✨
__ppc_set_ppr_very_low(3)Set the Program Priority Register✨
__ppc_yield(3)Hint the processor to release shared resources✨
__realloc_hook(3)malloc debugging variables (DEPRECATED)✨
__riscv_flush_icache(3)Flush icaches on RISC-V✨
__setfpucw(3)set FPU control word on i386 architecture (obsolete)✨
_Countof(3)count the number of elements in an array✨
_Exit(2)terminate the calling process✨
_exit(2)terminate the calling process✨
_Exit(3)terminate the calling process✨
_exit(3)terminate the calling process✨
_flushlbf(3)interfaces to stdio FILE structure✨
_Fork(3)create a child process✨
_Generic(3)type-generic selection✨
_llseek(2)reposition read/write file offset✨
_Maxof(3)limits of an integer type✨
_Minof(3)limits of an integer type✨
_newselect(2)synchronous I/O multiplexing✨
_Static_assert(3)fail compilation if assertion is false✨
_syscall(2)invoking a system call without library support (OBSOLETE)✨
_sysctl(2)read/write system parameters✨

A

a64l(3)convert between long and base-64✨
abort(3)cause abnormal process termination✨
abs(3)compute the absolute value of an integer✨
accept(2)accept a connection on a socket✨
accept4(2)accept a connection on a socket✨
access(2)check user's permissions for a file✨
acct(2)switch process accounting on or off✨
acos(3)arc cosine function✨
acosf(3)arc cosine function✨
acosh(3)inverse hyperbolic cosine function✨
acoshf(3)inverse hyperbolic cosine function✨
acoshl(3)inverse hyperbolic cosine function✨
acosl(3)arc cosine function✨
add_key(2)add a key to the kernel's key management facility✨
addmntent(3)get filesystem descriptor file entry✨
addseverity(3)introduce new severity classes✨
adjtime(3)correct the time to synchronize the system clock✨
adjtimex(2)tune kernel clock✨
afs_syscall(2)unimplemented system calls✨
aio_cancel(3)cancel an outstanding asynchronous I/O request✨
aio_error(3)get error status of asynchronous I/O operation✨
aio_fsync(3)asynchronous file synchronization✨
aio_init(3)asynchronous I/O initialization✨
aio_read(3)asynchronous read✨
aio_return(3)get return status of asynchronous I/O operation✨
aio_suspend(3)wait for asynchronous I/O operation or timeout✨
aio_write(3)asynchronous write✨
aiocb(3type)asynchronous I/O control block✨
alarm(2)set an alarm clock for delivery of a signal✨
aligned_alloc(3)allocate aligned memory✨
alloc_hugepages(2)allocate or free huge pages✨
alloca(3)allocate memory that is automatically freed✨
alphasort(3)scan a directory for matching entries✨
aprintf(3)allocate and print formatted string✨
arc4random(3)cryptographically- secure pseudorandom number generator✨
arc4random_buf(3)cryptographically- secure pseudorandom number generator✨
arc4random_uniform(3)cryptographically- secure pseudorandom number generator✨
arch_prctl(2)set architecture-specific thread state✨
argz(3)functions to handle an argz list✨
argz_add(3)functions to handle an argz list✨
argz_add_sep(3)functions to handle an argz list✨
argz_append(3)functions to handle an argz list✨
argz_count(3)functions to handle an argz list✨
argz_create(3)functions to handle an argz list✨
argz_create_sep(3)functions to handle an argz list✨
argz_delete(3)functions to handle an argz list✨
argz_extract(3)functions to handle an argz list✨
argz_insert(3)functions to handle an argz list✨
argz_next(3)functions to handle an argz list✨
argz_replace(3)functions to handle an argz list✨
argz_stringify(3)functions to handle an argz list✨
arm_fadvise(2)predeclare an access pattern for file data✨
arm_fadvise64_64(2)predeclare an access pattern for file data✨
arm_sync_file_range(2)sync a file segment with disk✨
asctime(3)transform date and time to broken-down time or ASCII✨
asctime_r(3)transform date and time to broken-down time or ASCII✨
asin(3)arc sine function✨
asinf(3)arc sine function✨
asinh(3)inverse hyperbolic sine function✨
asinhf(3)inverse hyperbolic sine function✨
asinhl(3)inverse hyperbolic sine function✨
asinl(3)arc sine function✨
asprintf(3)print to allocated string✨
assert(3)abort the program if assertion is false✨
assert_perror(3)test errnum and abort✨
atan(3)arc tangent function✨
atan2(3)arc tangent function of two variables✨
atan2f(3)arc tangent function of two variables✨
atan2l(3)arc tangent function of two variables✨
atanf(3)arc tangent function✨
atanh(3)inverse hyperbolic tangent function✨
atanhf(3)inverse hyperbolic tangent function✨
atanhl(3)inverse hyperbolic tangent function✨
atanl(3)arc tangent function✨
atexit(3)register a function to be called at normal process termination✨
atof(3)convert a string to a double✨
atoi(3)convert a string to an integer✨
atol(3)convert a string to an integer✨
atoll(3)convert a string to an integer✨
atoq(3)convert a string to an integer✨
auth_destroy(3)library routines for remote procedure calls✨
authnone_create(3)library routines for remote procedure calls✨
authunix_create(3)library routines for remote procedure calls✨
authunix_create_default(3)library routines for remote procedure calls✨

B

backtrace(3)support for application self-debugging✨
backtrace_symbols(3)support for application self-debugging✨
backtrace_symbols_fd(3)support for application self-debugging✨
basename(3)parse pathname components✨
bcmp(3)byte compare✨
bcopy(3)byte copy✨
bdflush(2)start, flush, or tune buffer-dirty-flush daemon✨
be16toh(3)convert values between host and big-/little-endian byte order✨
be32toh(3)convert values between host and big-/little-endian byte order✨
be64toh(3)convert values between host and big-/little-endian byte order✨
bind(2)bind a name to a socket✨
bindresvport(3)bind a socket to a privileged IP port✨
blkcnt_t(3type)file block counts✨
blksize_t(3type)file block sizes✨
bpf(2)perform a command on an extended BPF map or program✨
break(2)unimplemented system calls✨
brk(2)change data segment size✨
bsd_signal(3)signal handling with BSD semantics✨
bsearch(3)binary search of a sorted array✨
bstring(3)memory operations✨
bswap(3)byte swap✨
bswap_16(3)byte swap✨
bswap_32(3)byte swap✨
bswap_64(3)byte swap✨
btowc(3)convert single byte to wide character✨
btree(3)btree database access method✨
byteorder(3)convert values between host and network byte order✨
bzero(3)byte-array zero✨

C

cabs(3)absolute value of a complex number✨
cabsf(3)absolute value of a complex number✨
cabsl(3)absolute value of a complex number✨
cacheflush(2)flush contents of instruction and/or data cache✨
cachestat(2)query the page cache statistics of a file✨
cacos(3)complex arc cosine✨
cacosf(3)complex arc cosine✨
cacosh(3)complex arc hyperbolic cosine✨
cacoshf(3)complex arc hyperbolic cosine✨
cacoshl(3)complex arc hyperbolic cosine✨
cacosl(3)complex arc cosine✨
calloc(3)allocate and free dynamic memory✨
callrpc(3)library routines for remote procedure calls✨
canonicalize_file_name(3)return the canonicalized absolute pathname✨
capget(2)set/get capabilities of thread(s)✨
capset(2)set/get capabilities of thread(s)✨
carg(3)calculate the complex argument✨
cargf(3)calculate the complex argument✨
cargl(3)calculate the complex argument✨
casin(3)complex arc sine✨
casinf(3)complex arc sine✨
casinh(3)complex arc sine hyperbolic✨
casinhf(3)complex arc sine hyperbolic✨
casinhl(3)complex arc sine hyperbolic✨
casinl(3)complex arc sine✨
catan(3)complex arc tangents✨
catanf(3)complex arc tangents✨
catanh(3)complex arc tangents hyperbolic✨
catanhf(3)complex arc tangents hyperbolic✨
catanhl(3)complex arc tangents hyperbolic✨
catanl(3)complex arc tangents✨
catclose(3)open/close a message catalog✨
catgets(3)get message from a message catalog✨
catopen(3)open/close a message catalog✨
cbc_crypt(3)fast DES encryption✨
cbrt(3)cube root function✨
cbrtf(3)cube root function✨
cbrtl(3)cube root function✨
cc_t(3type)terminal special characters, baud rates, modes✨
ccos(3)complex cosine function✨
ccosf(3)complex cosine function✨
ccosh(3)complex hyperbolic cosine✨
ccoshf(3)complex hyperbolic cosine✨
ccoshl(3)complex hyperbolic cosine✨
ccosl(3)complex cosine function✨