---
name: "undocumented"
section: "3"
platform: "linux"
package: "man-pages"
version: "6.19-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/undocumented/3"
---

# undocumented(3)

undocumented library functions

## NAME

undocumented - undocumented library functions

## SYNOPSIS

```
Undocumented library functions
```

## DESCRIPTION

This man page mentions those library functions which are implemented in the standard libraries but not yet documented in man pages.

### Solicitation

If you have information about these functions, please look in the source code, write a man page (using a style similar to that of the other Linux section 3 man pages), and send it to **mtk.manpages@gmail.com** for inclusion in the next man page release.

### The list

[**authdes\_create**(3)](/authdes_create/3.md), [**authdes\_getucred**(3)](/authdes_getucred/3.md), **authdes\_pk\_create**(3), [**clntunix\_create**(3)](/clntunix_create/3.md), **creat64**(3), [**dn\_skipname**(3)](/dn_skipname/3.md), **fcrypt**(3), **fp\_nquery**(3), **fp\_query**(3), **fp\_resstat**(3), **freading**(3), **freopen64**(3), **fseeko64**(3), **ftello64**(3), **ftw64**(3), [**fwscanf**(3)](/fwscanf/3.md), [**get\_avphys\_pages**(3)](/get_avphys_pages/3.md), **getdirentries64**(3), **getmsg**(3), [**getnetname**(3)](/getnetname/3.md), [**get\_phys\_pages**(3)](/get_phys_pages/3.md), [**getpublickey**(3)](/getpublickey/3.md), [**getsecretkey**(3)](/getsecretkey/3.md), **h\_errlist**(3), [**host2netname**(3)](/host2netname/3.md), **hostalias**(3), **inet\_nsap\_addr**(3), **inet\_nsap\_ntoa**(3), **init\_des**(3), **libc\_nls\_init**(3), **mstats**(3), [**netname2host**(3)](/netname2host/3.md), [**netname2user**(3)](/netname2user/3.md), [**nlist**(3)](/nlist/3.md), **obstack\_free**(3), **parse\_printf\_format**(3), **p\_cdname**(3), **p\_cdnname**(3), **p\_class**(3), **p\_fqname**(3), **p\_option**(3), **p\_query**(3), **printf\_size**(3), **printf\_size\_info**(3), **p\_rr**(3), **p\_time**(3), **p\_type**(3), **putlong**(3), **putshort**(3), **re\_compile\_fastmap**(3), **re\_compile\_pattern**(3), **register\_printf\_function**(3), **re\_match**(3), **re\_match\_2**(3), **re\_rx\_search**(3), **re\_search**(3), **re\_search\_2**(3), **re\_set\_registers**(3), **re\_set\_syntax**(3), **res\_send\_setqhook**(3), **res\_send\_setrhook**(3), **ruserpass**(3), **setfileno**(3), **sethostfile**(3), [**svc\_exit**(3)](/svc_exit/3.md), **svcudp\_enablecache**(3), [**tell**(3)](/tell/3.md), [**thrd\_create**(3)](/thrd_create/3.md), [**thrd\_current**(3)](/thrd_current/3.md), [**thrd\_equal**(3)](/thrd_equal/3.md), [**thrd\_sleep**(3)](/thrd_sleep/3.md), [**thrd\_yield**(3)](/thrd_yield/3.md), **tr\_break**(3), **tzsetwall**(3), **ufc\_dofinalperm**(3), **ufc\_doit**(3), [**user2netname**(3)](/user2netname/3.md), **wcschrnul**(3), [**wcsftime**(3)](/wcsftime/3.md), [**wscanf**(3)](/wscanf/3.md), **xdr\_authdes\_cred**(3), **xdr\_authdes\_verf**(3), **xdr\_cryptkeyarg**(3), **xdr\_cryptkeyres**(3), **xdr\_datum**(3), **xdr\_des\_block**(3), **xdr\_domainname**(3), **xdr\_getcredres**(3), **xdr\_keybuf**(3), **xdr\_keystatus**(3), **xdr\_mapname**(3), **xdr\_netnamestr**(3), **xdr\_netobj**(3), **xdr\_passwd**(3), **xdr\_peername**(3), **xdr\_rmtcall\_args**(3), **xdr\_rmtcallres**(3), **xdr\_unixcred**(3), **xdr\_yp\_buf**(3), **xdr\_yp\_inaddr**(3), **xdr\_ypbind\_binding**(3), **xdr\_ypbind\_resp**(3), **xdr\_ypbind\_resptype**(3), **xdr\_ypbind\_setdom**(3), **xdr\_ypdelete\_args**(3), **xdr\_ypmaplist**(3), **xdr\_ypmaplist\_str**(3), **xdr\_yppasswd**(3), **xdr\_ypreq\_key**(3), **xdr\_ypreq\_nokey**(3), **xdr\_ypresp\_all**(3), **xdr\_ypresp\_all\_seq**(3), **xdr\_ypresp\_key\_val**(3), **xdr\_ypresp\_maplist**(3), **xdr\_ypresp\_master**(3), **xdr\_ypresp\_order**(3), **xdr\_ypresp\_val**(3), **xdr\_ypstat**(3), **xdr\_ypupdate\_args**(3), [**yp\_all**(3)](/yp_all/3.md), [**yp\_bind**(3)](/yp_bind/3.md), [**yperr\_string**(3)](/yperr_string/3.md), [**yp\_first**(3)](/yp_first/3.md), [**yp\_get\_default\_domain**(3)](/yp_get_default_domain/3.md), **yp\_maplist**(3), [**yp\_master**(3)](/yp_master/3.md), [**yp\_match**(3)](/yp_match/3.md), [**yp\_next**(3)](/yp_next/3.md), [**yp\_order**(3)](/yp_order/3.md), [**ypprot\_err**(3)](/ypprot_err/3.md), [**yp\_unbind**(3)](/yp_unbind/3.md), **yp\_update**(3)