NAME | DESCRIPTION | CONFORMING TO | NOTES | SEE ALSO | COLOPHON
INTRO(3) Linux Programmer's Manual INTRO(3)
intro - Introduction to library functions
Section 3 of the manual describes all library functions excluding the library
functions (system call wrappers) described in section 2, which implement
system calls.
Many of the functions described in the section are part of the Standard C
Library (libc). Some functions are part of other libraries (e.g., the math
library, libm, or the real-time library, librt) in which case the manual page
will indicate the linker option needed to link against the required library
(e.g., -lm and -lrt, respectively, for the aforementioned libraries).
In some cases, the programmer must define a feature test macro in order to
obtain the declaration of a function from the header file specified in the man
page SYNOPSIS section. In such cases, the required macro is described in the
man page. For further information on feature test macros, see
feature_test_macros(7).
Certain terms and abbreviations are used to indicate Unix variants and
standards to which calls in this section conform. See standards(7).
Look at the header of the manual page source for the author(s) and copyright
conditions. Note that these can be different from page to page!
intro(2), errno(3), feature_test_macros(7), libc(7), standards(7)
This page is part of release 3.21 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
Linux 2009-02-01 INTRO(3)