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 cc(1) by default.

       (3S)   These functions are parts of the stdio(3S) 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
              f77(1) FORTRAN compiler by default, but not by the cc(1) 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!