INTRO

Section: C Library Functions (3)
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BSD mandoc
BSD 4  

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 functions 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 libcfunctions are available from Fortran; they are described separately in intro(3f).

The various libraries (followed by the loader flag):

libcPqFllNsArc
Standard C library functions. (See libc(3).)WhenusingtheCcompiler cc(1), it is not necessary to supply the loader flag -l c for these functions. There are several `libraries' or groups of functions included inside of libc:thestandard I/O routines, database routines, bit operators, string operators, character tests and character operators, des encryption routines, storage allocation, time functions, signal handling and more.
libcurses ( -l curses -l termcap
Terminal independent screen management routines for two dimensional non-bitmap display terminals. (See curses(3).)
libcompatPqFllNsArcompat
Functions which are obsolete but are available for compatibility with BSD 4.3 In particular, a number of system call interfaces provided in previous releases of BSD 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.
liblPqFllNsArl
The library for lex(1).
libmPqFllNsArm
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 -l m flag. (See math(3).)
libmpPqFllNsArmp
libplotPqFllNsArplot
Device independent plotting functions. (See plot(3).)
libplotf77PqFllNsArplotf77
The device independent plotting functions for fortran. (See plot(3).)
libtermcapFllNsArtermcap
The terminal independent operation library package. (See termcap(3).)
libyPqFllNsAry
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 AT&T System v7 .


 

Index

NAME
DESCRIPTION
FILES
SEE ALSO
HISTORY

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Time: 06:48:06 GMT, May 19, 2025