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intro(3C)							     intro(3C)

NAME
       intro - introduction to subroutines and libraries

DESCRIPTION
       This section describes functions	found in various libraries, other than
       those functions that directly invoke HP-UX system primitives, which are
       described in Section (2)	of this	volume.	 Certain major collections are
       identified by a letter after the	section	identifier (3):

	      (3C)	These functions, together with	the  Operating	System
			Calls and those	marked (3S), constitute	the Standard C
			Library, which is automatically	loaded by the  C  com-
			piler,	cc(1).	 Declarations  for some	of these func-
			tions can be obtained  from  files  indicated  in  the
			appropriate entries.

	      (3E)	These  functions  constitute  the  ELF	access library
			which lets a program manipulate	 ELF  (Executable  and
			Linking	 Format)  object files,	archive	files, and ar-
			chive members.	The link editor	searches this  library
			if  the	option is specified.  The header file provides
			type and function declarations for  all	 library  ser-
			vices (described in elf(3E).

	      (3G)	These  functions  constitute  the graphics library and
			are documented in separate manuals.

	      (3I)	These  functions  constitute  the  instrument  support
			(Device	I/O) library.

	      (3M)	These  functions constitute the	Math Library, The link
			editor searches	this library if	the option  is	speci-
			fied.	Declarations for these functions are available
			in the header files and	Several	generally useful math-
			ematical  constants are	also defined in	(see math(5)).

	      (3N)	These functions	are applicable to the Internet network
			and are	part of	the standard C library,

	      (3S)	These  functions  constitute  the ``standard I/O pack-
			age'' (see stdio(3S)).	These  functions  are  in  the
			library	 already  mentioned.   Declarations  for these
			functions can be obtained from the file

	      (3T)	These functions	constitute the Pthreads	Library.   The
			link  editor  (see ld(1)) searches this	library	if the
			option	is  specified.	 See  pthread(3T)   for	  more
			detailed information on	threads.

	      (3X)	Various	 specialized  libraries.   The	files in which
			these libraries	are found are specified	in the	appro-
			priate entries.

DIAGNOSTICS
       Functions  in  the  C and Math Libraries, (3C) and (3M),	may return the
       conventional values or when the function	is  undefined  for  the	 given
       arguments  or  when  the	 value	is  not	 representable.	 is defined as
       +INFINITY in the	header file.  Functions	in the Math Library  may  also
       return  or  a  In these cases, the external variable (see errno(2)) may
       also be set to the value	[EDOM] or [ERANGE].

FILES
       (For PA release stream.)		  Standard   I/O,   operating	system
					  calls,  and general purpose routines
					  archive library.

       (For PA release stream.)		  Standard   I/O,   operating	system
					  calls,  and general purpose routines
					  shared library.

       (For IPF	release	stream.)	  Standard   I/O,   operating	system
					  calls,  and general purpose routines
					  32-bit and 64-bit shared  libraries.

       (For PA release stream.)		  CRT  screen handling shared library.

       (For IPF	release	stream.)	  CRT  screen  handling	  32-bit   and
					  64-bit shared	libraries.

       (For PA release stream.)		  ELF archive library.

       (For PA release stream.)		  ELF shared library.

       (For IPF	release	stream.)	  ELF	32-bit	 and   64-bit	shared
					  libraries.

       (For PA release stream.)		  SVID3, XPG4.2, and ANSI C  compliant
					  math archive library.

       (For PA release stream.)		  SVID3,  XPG4.2, and ANSI C compliant
					  math archive library.

       (For IPF	release	stream.)	  SVID3, XPG4.2, and ANSI C  compliant
					  32-bit   and	 64-bit	  math	shared
					  libraries.

SEE ALSO
       ar(1), elf(3E), ld(1), nm(1), intro(2),	stdio(3S),  hier(5),  math(5),
       thread_safety(5), introduction(9).

       Web access to HP-UX documentation at

								     intro(3C)

NAME | DESCRIPTION | DIAGNOSTICS | FILES | SEE ALSO

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