intro(3)
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INTRO(3) NetBSD Programmer's 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. Other libraries, such as
the math library, libm, must be indicated at compile time with the -l op-
tion of the compiler.
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 routines,
database routines, bit operators, string operators, character
tests and character operators, DES encryption routines, stor-
age 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.
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
cc(1), ld(1), nm(1), intro(2), math(3), stdio(3)
HISTORY
An intro manual appeared in Version 7 AT&T UNIX.
NetBSD 1.5 June 5, 1993 1
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