INTRO(3) INTRO(3)
NAME
intro - introduction to library functions
SYNOPSIS
#include <libc.h>
#include <stdio.h>
#include <math.h>
DESCRIPTION
This section describes functions that may be found in vari-
ous libraries, other than the system calls described in sec-
tion 2. Functions are divided into various libraries dis-
tinguished by the section number at the top of the page:
(3) These functions, together with those of section 2 and
those marked (3S) and (3M), constitute library libc,
which is automatically loaded by the C compiler cc(1)
and the Fortran compiler f77(1). The same functions
appear also in libC, which is automatically loaded by
the C++ compiler; see c++(1). The link editor ld(1)
searches this library under option -lc (-lC for libC).
Declarations for some of these functions may be
obtained from include files indicated on the appropri-
ate pages. Other declarations can be found in
(3F) These functions are in the Fortran library, libF77,
automatically loaded by the Fortran compiler, and
searched under option -lF77 of the link editor.
(3M) These functions constitute the math library, part of
libc. (On some other systems they must be loaded by
-lm). Declarations for these functions may be obtained
from the include file
(3S) These functions constitute the `standard IO package'
(see stdio(3)) part of libc already mentioned. Decla-
rations for these functions may be obtained from the
include file
(3X) Various specialized libraries have not been given dis-
tinctive captions. Files in which such libraries are
found are named on appropriate pages.
(3+) C++ functions in libC that are not in libc.
FILES
the value EDOM or ERANGE, defined in the include file