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 .\"     @(#)intro.3	8.1 (Berkeley) 6/5/93
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-.Dd December 18, 2021
+.Dd November 7, 2022
 .Dt INTRO 3
 .Os
 .Sh NAME
 .Nm intro
 .Nd introduction to the C libraries
 .Sh SYNOPSIS
 .Nm cc
 .Op Ar flags
 .Ar
 .Op Fl llibrary
 .Sh DESCRIPTION
 This section provides an overview of the C
 library functions, their error returns and other
 common definitions and concepts.
 Most of these functions are available from the C library,
 .Em libc .
 Other libraries, such as the math library,
 .Em libm ,
 must be indicated at compile time with the
 .Fl l
 option of the compiler.
 .Pp
 The various libraries (followed by the loader flag):
 .Bl -tag -width "libbluetooth"
 .It Em libbluetooth
 .Pq Fl l Ns Ar bluetooth
 The bluetooth library.
 See
 .Xr bluetooth 3 .
 .It Em libc
 .Pq Fl l Ns Ar c
 Standard C library functions.
 When using the C compiler
 .Xr cc 1 ,
 it is not necessary
 to supply the loader flag
 .Fl l Ns Ar c
 for these functions.
 There are several `libraries' or groups of functions included inside of
 .Em libc :
 .Bl -tag -width "XXXXXX"
 .It standard I/O routines
 see
 .Xr stdio 3
 .It database routines
 see
 .Xr db 3
 .It bit operators
 see
 .Xr bitstring 3
 .It string operators
 see
 .Xr string 3
 .It character tests and character operators
 .It storage allocation
 see
 .Xr mpool 3
 .It regular-expressions
 see
 .Xr regex 3
 .It remote procedure calls (RPC)
 see
 .Xr rpc 3
 .It time functions
 see
 .Xr time 3
 .It signal handling
 see
 .Xr signal 3
 .El
 .It Em libcalendar
 .Pq Fl l Ns Ar calendar
 The calendar arithmetic library.
 See
 .Xr calendar 3 .
 .It Em libcam
 .Pq Fl l Ns Ar cam
 The common access method user library.
 See
 .Xr cam 3 .
 .It Em libcrypt
 .Pq Fl l Ns Ar crypt
 The crypt library.
 See
 .Xr crypt 3 .
 .It Em libcurses
 .Pq Fl l Ns Ar curses Fl l Ns Ar termcap
 Terminal independent screen management routines
 for two dimensional non-bitmap display terminals.
 See
 .Xr ncurses 3 .
 .It Em libcuse
 .Pq Fl l Ns Ar cuse
 The userland character device library.
 See
 .Xr cuse 3 .
 .It Em libcompat
 .Pq Fl l Ns Ar compat
 Functions which are obsolete but are available for compatibility with
 .Bx 4.3 .
 In particular,
 a number of system call interfaces provided in previous releases of
 .Bx
 have been included for source code compatibility.
 Use of these routines should, for the most part, be avoided.
 The manual page entry for each compatibility routine
 indicates the proper interface to use.
 .It Em libdevinfo
 .Pq Fl l Ns Ar devinfo
 The Device and Resource Information Utility library.
 See
 .Xr devinfo 3 .
 .It Em libdevstat
 .Pq Fl l Ns Ar devstat
 The Device Statistics library.
 See
 .Xr devstat 3 .
 .It Em libdwarf
 .Pq Fl l Ns Ar dwarf
 The DWARF access library.
 See
 .Xr dwarf 3 .
 .It Em libelf
 .Pq Fl l Ns Ar elf
 The ELF access library.
 See
 .Xr elf 3 .
 .It Em libfetch
 .Pq Fl l Ns Ar fetch
 The file transfer library.
 See
 .Xr fetch 3 .
 .It Em libfigpar
 .Pq Fl l Ns Ar figpar
 The configuration file parsing library.
 See
 .Xr figpar 3 .
 .It Em libgpio
 .Pq Fl l Ns Ar gpio
 The general-purpose input output library (GPIO).
 See
 .Xr gpio 3 .
 .It Em libgssapi
 .Pq Fl l Ns Ar gssapi
 The generic security service application programming
 interface.
 See
 .Xr gssapi 3 .
 .It Em libjail
 .Pq Fl l Ns Ar jail
 The jail library.
 See
 .Xr jail 3 .
 .It Em libkvm
 .Pq Fl l Ns Ar kvm
 Functions used to access kernel memory are in this library.
 They can be used
 against both a running system and a crash dump.
 See
 .Xr kvm 3 .
 .It Em libl
 .Pq Fl l Ns Ar l
 The library for
 .Xr lex 1 .
 .It Em libm
 .Pq Fl l Ns Ar m
 The math library.
 See
 .Xr math 3 .
 .It Em libmd
 .Pq Fl l Ns Ar md
 The message digest library.
 See
 .Xr md4 3 ,
 .Xr md5 3 ,
 .Xr sha 3 ,
 .Xr sha256 3 ,
 .Xr sha512 3 ,
 .Xr ripemd 3 ,
 .Xr skein 3 .
 .It Em libmp
 .Pq Fl l Ns Ar mp
 .It Em libpam
 .Pq Fl l Ns Ar pam
 The pluggable authentication module library.
 See
 .Xr pam 3 .
 .It Em libpcap
 .Pq Fl l Ns Ar pcap
 The packet capture library.
 See
 .Xr pcap 3 .
 .It Em libpmc
 .Pq Fl l Ns Ar pmc
 The performance counters library.
 See
 .Xr pmc 3 .
 .It Em libpthread
 .Pq Fl l Ns Ar pthread
 The POSIX threads library.
 See
 .Xr pthread 3 .
+.It Em libstdthreads
+.Pq Fl l Ns Ar stdthreads
+The ISO C11 standard
+.In threads.h
+library.
+See
+.Xr thrd_create 3 .
 .It Em libsysdecode
 .Pq Fl l Ns Ar sysdecode
 The system argument decoding library.
 See
 .Xr sysdecode 3 .
 .It Em libtermcap
 .Pq Fl l Ns Ar termcap
 The terminal independent operation library package.
 See
 .Xr termcap 3 .
 .It Em libusb
 .Pq Fl l Ns Ar usb
 The USB access library.
 See
 .Xr usb 3 .
 .It Em libvgl
 .Pq Fl l Ns Ar vgl
 The video graphics library.
 See
 .Xr vgl 3 .
 .It Em liby
 .Pq Fl l Ns Ar y
 The library for
 .Xr yacc 1 .
 .It Em libz
 .Pq Fl l Ns Ar z
 The general-purpose data compression library.
 See
 .Xr zlib 3 .
 .El
 .Sh FILES
 .Bl -tag -width /usr/lib/libm_p.a -compact
 .It Pa /usr/lib/libc.a
 the C library
 .It Pa /usr/lib/libc_p.a
 the C library compiled for profiling
 .It Pa /usr/lib/libm.a
 the math library
 .It Pa /usr/lib/libm_p.a
 the math library compiled for profiling
 .El
 .Sh SEE ALSO
 .Xr cc 1 ,
 .Xr ld 1 ,
 .Xr nm 1 ,
 .Xr intro 2 ,
 .Xr math 3 ,
 .Xr stdio 3
 .Sh HISTORY
 An
 .Nm
 manual appeared in
 .At v7 .