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stdh.h
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C/C++ Source or Header
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1996-09-28
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2KB
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87 lines
/* NAME:
* stdh.h - standard headers
*
* SYNOPSIS:
* #include "stdh.h"
*
* DESCRIPTION:
* We use this header to encapsulate all the stddef et al
* inclusion so that most of the source can ignore the
* problems that their lack might cause.
*
* SEE ALSO:
*
*
* AMENDED:
* 91/11/25 13:33:12 (sjg)
*
* RELEASED:
* 91/11/25 13:33:17 v1.3
*
* SCCSID:
* @(#)stdh.h 1.3 91/11/25 13:33:12 (sjg)
*
*/
#ifndef ARGS
# ifdef __STDC__
# define ARGS(args) args
# else
# define ARGS(args) ()
# ifdef VOID
# define void VOID
# endif
# define const
# define volatile
# endif
#endif
#include <stdio.h>
/* if we have std headers then include them here
* otherwise make allowances
*/
#ifndef NOSTDHDRS
# include <stddef.h>
# include <stdlib.h>
# include <string.h>
# include <sys/types.h>
#else
# ifdef HAVE_SYS_STDTYPES
# include <sys/stdtypes.h>
# else
# include <sys/types.h>
/* just in case they have sys/stdtypes and don't know it
*/
# ifndef __sys_stdtypes_h
#define _PID_T
#define _CLOCK_T
typedef int pid_t;
typedef long clock_t;
# endif
# endif
# ifdef _SYSV
# include <string.h>
# else
# include <strings.h>
# define strchr index
# define strrchr rindex
# endif
/* just a useful subset of what stdlib.h would have
*/
extern char * getenv ARGS((const char *));
extern void * malloc ARGS((size_t));
extern int free ARGS((void *));
extern int exit ARGS((int));
/* these _should_ match ANSI */
extern char * strstr ARGS((const char *, const char *));
extern void * memmove ARGS((void *, const void *, size_t));
extern void * memcpy ARGS((void *, const void *, size_t));
#endif /* NOSTDHDRS */
#ifndef offsetof
#define offsetof(type,id) ((size_t)&((type*)NULL)->id)
#endif