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INTRO(3)	       FreeBSD Library Functions Manual		      INTRO(3)

NAME
     intro -- introduction to the C libraries

DESCRIPTION
     This section provides an overview of the C	library	functions, their error
     returns and other common definitions and concepts.	 Most of these func-
     tions are available from the C library, libc (see libc(3)).  Other
     libraries,	such as	the math library, libm,	must be	indicated at compile
     time with the -l option of	the compiler.

     A subset of the libc(functions) are available from	Fortran; they are
     described separately in intro(3f).

     The various libraries (followed by	the loader flag):

     libc (-lc)	 Standard C library functions. (See libc(3).) When using the C
		 compiler cc(1), it is not necessary to	supply the loader flag
		 -lc for these functions.  There are several `libraries' or
		 groups	of functions included inside of	libc: the standard I/O
		 routines, database routines, bit operators, string operators,
		 character tests and character operators, des encryption rou-
		 tines,	storage	allocation, time functions, signal handling
		 and more.

     libcurses (-lcurses -ltermcap)
		 Terminal independent screen management	routines for two
		 dimensional non-bitmap	display	terminals.  (See curses(3).)

     libcompat (-lcompat)
		 Functions which are obsolete but are available	for compati-
		 bility	with 4.3BSD.  In particular, a number of system	call
		 interfaces provided in	previous releases of BSD have been
		 included for source code compatibility.  Use of these rou-
		 tines should, for the most part, be avoided.  The manual page
		 entry for each	compatibility routine indicates	the proper
		 interface to use.

     libl (-ll)	 The library for lex(1).

     libm (-lm)	 The math library, libm.  The math library is loaded as	needed
		 by the	Pascal compiler	pc(1), but not by the C	compiler which
		 requires the -lm flag.	 (See math(3).)

     libmp (-lmp)

     libplot (-lplot)
		 Device	independent plotting functions.	 (See plot(3).)

     libplotf77	(-lplotf77)
		 The device independent	plotting functions for fortran.	 (See
		 plot(3).)

     libtermcap	-ltermcap
		 The terminal independent operation library package. (See
		 termcap(3).)

     liby (-ly)	 The library for yacc(1).

FILES
     /usr/lib/libc.a	the C library
     /usr/lib/libm.a	the math library
     /usr/lib/libc_p.a	the C library compiled for profiling
     /usr/lib/libm_p.a	the math library compiled for profiling

SEE ALSO
     stdio(3), math(3),	intro(2), cc(1), ld(1),	nm(1)

HISTORY
     An	intro manual appeared in Version 7 AT&T	UNIX.

4th Berkeley Distribution	 June 5, 1993	     4th Berkeley Distribution

NAME | DESCRIPTION | FILES | SEE ALSO | HISTORY

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