/* (-lgl * Coherent 386 release 4.2 * Copyright (c) 1982, 1993 by Mark Williams Company. * All rights reserved. May not be copied without permission. * For copying permission and licensing info, write licensing@mwc.com -lgl) */ #ifndef __COMMON__NULL_H__ #define __COMMON__NULL_H__ /* * This internal header factors out the definition of NULL from all other * aspects of the STREAMS and device systems. To create a reasonable * facsimile of the STREAMS and DDI/DDK programming environments, many of * the header files defined by those documents in the System V environment * have been defined. From the POSIX and ISO C standards documents, we learn * that <sys/types.h> is the most likely candidate, but that definitions also * occur in <stdlib.h>, <stdio.h>, and many other places. */ /* * For Borland C++, the use of memory models requires that we define NULL * appropriately. There is a special Borland header for this, however. */ #ifndef NULL # if __BORLANDC__ # include <_null.h> # else # define NULL 0 # endif #endif #endif /* ! defined (__COMMON__NULL_H__) */