standards(5) [hpux man page]

standards(5)							File Formats Manual						      standards(5)

NAME

       standards - UNIX standards behavior on HP-UX

DESCRIPTION

       HP-UX  conforms	to  various UNIX standards.  In some cases, these standards conflict.  This manpage describes the methods that programmers
       and users must follow to have an application conform and execute according to a particular UNIX standard.

   UNIX Standard Conformant Programmer Environment
       The following table lists feature test macros and environment variables that must be defined while compiling an application.  Both  a  fea-
       ture  test  macro and an environment variable must be defined while compiling the application so that the application conforms and executes
       according to a particular UNIX standard.  Otherwise, the behavior is undefined.

	      Standard	  Feature Test Macros to be	 Environment variable
			  defined during compilation	 to be set

	      UNIX 95	  _XOPEN_SOURCE_EXTENDED=1	 UNIX95  or
							 UNIX_STD=95  or
							 UNIX_STD=1995

	      UNIX 2003   _XOPEN_SOURCE=600		 UNIX_STD=2003

       The compiler uses the feature test macros to obtain the appropriate namespace from the header files.  The  compiler  uses  the  environment
       variable  to  link in an appropriate object file to the executable.  Using the environment variable customizes libc to match UNIX standards
       for various functions.

       If an application has already been compiled for default HP-UX behavior or for one particular standard, and needs to change to a	particular
       UNIX standard behavior, recompile the application as specified in the above table.

       For  an	HP-UX command to conform to a particular UNIX standard behavior, the application has to set the corresponding environment variable
       as specified in the above table before executing that command.

   UNIX Standard Conformant User Environment
       To enable a particular UNIX standard conformant user environment, set the corresponding environment variable as defined in the above table.

EXAMPLES

       The following examples shows an application example.  To have the system be conformant to UNIX2003 behavior, set the  environment  variable
       to and define the feature test macro before compilation.

       The  following  example	changes  the command to have UNIX95 behavior by setting one of the environment variables to or to before executing
       that command.  There are three ways of setting the environment variable for UNIX95:

       or

       or

SEE ALSO

       cc(1), stdsyms(5).

																      standards(5)

Check Out this Related Man Page

ttyslot(3)						     Library Functions Manual							ttyslot(3)

NAME

       ttyslot - Finds the slot for the current user in the user accounting database

LIBRARY

       Standard C Library (libc.so, libc.a)

SYNOPSIS

       #include <stdlib.h>

       int ttyslot (void);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       ttyslot():  XSH4.2

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION

       The ttyslot() function returns the index of the current user's entry in the user accounting database.  The current user's entry is an entry
       for which the utline member matches the name of a terminal device associated with any of the process' file descriptors 0, 1, or 2 (standard
       input,  standard  output,  or  error output).  The index is an ordinal number representing the record number in the database of the current
       user's entry.  The first entry in the database is represented by the return value 0 (zero).

NOTES

       The ttyslot() function is scheduled to be withdrawn in a future version of the X/Open CAE Specification.

       [Tru64 UNIX]  When compiled in the X/Open UNIX environment, calls to the ttyslot() function are internally renamed by prepending _E to  the
       function  name. When you are debugging a module that includes the ttyslot() function and for which _XOPEN_SOURCE_EXTENDED has been defined,
       use _Ettyslot to refer to the ttyslot() call.  See standards(5) for information on when the _XOPEN_SOURCE_EXTENDED macro is defined.

RETURN VALUES

       Upon successful completion, the ttyslot() function returns the index of the current user's entry in the user accounting database.

       If an error is encountered while searching the database, or if none of the file descriptors 0, 1,  or  2  is  associated  with  a  terminal
       device, -1 is returned.

       The following behavior does not conform to the current standards, and is supported only for backward compatibility.

       [Tru64  UNIX]  In applications that are compiled in an environment that excludes the _XOPEN_SOURCE_EXTENDED standard definitions, the ttys-
       lot() function returns 0 (zero) on error.

RELATED INFORMATION

       Functions: getutxent(3), ttyname(3)

       Standards: standards(5) delim off

																	ttyslot(3)

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standards(5) [hpux man page]

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