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28 .\" @(#)intro.3 8.1 (Berkeley) 6/5/93
36 .Nd introduction to the C libraries
38 This section provides an overview of the C
39 library functions, their error returns and other
40 common definitions and concepts.
41 Most of these functions are available from the C library,
43 Other libraries, such as the math library,
45 must be indicated at compile time with the
47 option of the compiler.
49 The various libraries (followed by the loader flag):
50 .Bl -tag -width "libc (-lc)"
51 .It Em libc Pq Fl l Ns Ar c
52 Standard C library functions.
53 When using the C compiler
56 to supply the loader flag
59 There are several `libraries' or groups of functions included inside of
67 character tests and character operators,
68 des encryption routines,
69 storage allocation, time functions, signal handling and more.
70 .It Em libcurses Pq Fl l Ns Ar curses Fl l Ns Ar termcap
71 Terminal independent screen management routines
72 for two dimensional non-bitmap display terminals.
75 .It Em libcompat Pq Fl l Ns Ar compat
76 Functions which are obsolete but are available for compatibility with
79 a number of system call interfaces provided in previous releases of
81 have been included for source code compatibility.
82 Use of these routines should, for the most part, be avoided.
83 The manual page entry for each compatibility routine
84 indicates the proper interface to use.
85 .It Em libkvm Pq Fl l Ns Ar kvm
86 Functions used to access kernel memory are in this library.
88 against both a running system and a crash dump.
91 .It Em libl Pq Fl l Ns Ar l
94 .It Em libm Pq Fl l Ns Ar m
97 The math library is loaded as needed by the Pascal compiler,
98 but not by the C compiler which requires the
103 .It Em libmp Pq Fl l Ns Ar mp
104 .It Em libtermcap Pq Fl l Ns Ar termcap
105 The terminal independent operation library package.
108 .It Em liby Pq Fl l Ns Ar y
113 .Bl -tag -width /usr/lib/libm_p.a -compact
114 .It Pa /usr/lib/libc.a
116 .It Pa /usr/lib/libc_p.a
117 the C library compiled for profiling
118 .It Pa /usr/lib/libm.a
120 .It Pa /usr/lib/libm_p.a
121 the math library compiled for profiling