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Red Hat Documentation: man pages: man3: Linux Programmer's Manual (3)

Manpage of INTRO
INTRO
Section: Linux Programmer's Manual (3)
Updated: 13 December 2025
Index
NAME
intro - Introduction to library functions
DESCRIPTION
This chapter describes all library functions excluding the library functions described in chapter 2, which implement system calls. There are various function groups which can be identified by a letter which is appended to the chapter number:

(3C)
These functions, the functions from chapter 2 and from chapter 3S are contained in the C standard library libc, which will be used by by default.
(3S)
These functions are parts of the library. They are contained in the standard C library libc.
(3M)
These functions are contained in the arithmetic library libm. They are used by the FORTRAN compiler by default, but not by the C compiler, which needs the option -lm.
(3F)
These functions are part of the FORTRAN library libF77. There are no special compiler flags needed to use these functions.
(3X)
Various special libraries. The manual pages documenting their functions specify the library names.

AUTHORS
Look at the header of the manual page for the author(s) and copyright conditions. Note that these can be different from page to page!

Index

NAME

DESCRIPTION

AUTHORS

This document was created by using the manual pages.
Time: 11:58:04 GMT, March 24, 2025

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