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.\" @(#)intro.3 6.11 (Berkeley) 7/31/91
.Nd introduction to the C libraries
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,
Other libraries, such as the math library,
must be indicated at compile time with the
are available from Fortran;
they are described separately in
The various libraries (followed by the loader flag):
.Bl -tag -width "libc (-lc)"
.It Xr libc Pq Fl l Ns Ar c
Standard C library functions. (See
.Xr libc 3 . ) When using the C compiler
to supply the loader flag
There are several `libraries' or groups of functions included inside of
character tests and character operators,
storage allocation, time functions, signal handling and more.
Terminal independent screen management routines
for two dimensional non-bitmap display terminals.
.It Xr libcompat Pq Fl l Ns Ar compat
Functions which are obsolete but are available for compatibility with
a number of system call interfaces provided in previous releases of
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 Xr libl Pq Fl l Ns Ar l
.It Xr libm Pq Fl l Ns Ar m
The math library is loaded as needed by the Pascal compiler
but not by the C compiler which requires the
.It Xr libmp Pq Fl l Ns Ar mp
.It Xr libplot Pq Fl l Ns Ar plot
Device independent plotting functions.
.It Xr libplotf77 Pq Fl l Ns Ar plotf77
The device independent plotting functions for fortran.
.\" .It Xr libresolv Pq Fl l Ns Ar resolv
.\" Routines for network address resolution.
.It Xr libtermcap Fl l Ns Ar termcap
The terminal independent operation library package. (See
.It Xr liby Pq Fl l Ns Ar y
.Bl -tag -width /usr/lib/libm_p.a -compact
the C library compiled for profiling
the math library compiled for profiling
.\" .Sh LIST OF FUNCTIONS
.\" .Bl -column "strncasecmpxxx" "system"