intro - Introduction to library functions
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.
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!