INTRO(3) BSD Programmer's Manual INTRO(3)NAMEintro - 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. Other libraries, such as
the math library, libm, must be indicated at compile time with the -l op-
tion of the compiler.
A subset of the libc(functions) are available from Fortran; they are de-
scribed separately in intro(3f).
The various libraries (followed by the loader flag):
libc(-lc) Standard C library functions. 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 rou-
tines, 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 di-
mensional 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 in-
cluded 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.
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 ALSOstdio(3), math(3), intro(1), intro(2), intro(4), intro(6),
intro(7), intro(8), cc(1), ld(1), nm(1)HISTORY
An intro manual appeared in Version 7 AT&T UNIX.
4th Berkeley Distribution April 28, 1995 2
