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NetBSD/include/stdlib.h
bjh21 4be7a2dcf3 Add a new feature-test macro, _NETBSD_SOURCE. If this is defined 
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.
<sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE,
_POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve
existing behaviour.

This has two major advantages:
+ Programs that require non-POSIX facilities but define _POSIX_C_SOURCE
  can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS.
+ It makes most of the #ifs simpler, in that they're all now ORs of the
  various macros, rather than having checks for (!defined(_ANSI_SOURCE) ||
  !defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place.

I've tried not to change the semantics of the headers in any case where
_NETBSD_SOURCE wasn't defined, but there were some places where the
current semantics were clearly mad, and retaining them was harder than
correcting them.  In particular, I've mostly normalised things so that
_ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE,
_XOPEN_SOURCE and _NETBSD_SOURCE in that order.

Tested by building for vax, encouraged by thorpej, and uncontested in
tech-userlevel for a week.
2003-04-28 23:16:11 +00:00

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/* $NetBSD: stdlib.h,v 1.62 2003/04/28 23:16:14 bjh21 Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)stdlib.h 8.5 (Berkeley) 5/19/95
*/
#ifndef _STDLIB_H_
#define _STDLIB_H_
#include <sys/cdefs.h>
#include <sys/featuretest.h>
#if defined(_NETBSD_SOURCE)
#include <sys/types.h> /* for quad_t, etc. */
#endif
#include <machine/ansi.h>
#ifdef _BSD_SIZE_T_
typedef _BSD_SIZE_T_ size_t;
#undef _BSD_SIZE_T_
#endif
#ifdef _BSD_WCHAR_T_
typedef _BSD_WCHAR_T_ wchar_t;
#undef _BSD_WCHAR_T_
#endif
typedef struct {
int quot; /* quotient */
int rem; /* remainder */
} div_t;
typedef struct {
long quot; /* quotient */
long rem; /* remainder */
} ldiv_t;
#if !defined(_ANSI_SOURCE) && \
(defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
defined(_NETBSD_SOURCE))
typedef struct {
/* LONGLONG */
long long int quot; /* quotient */
/* LONGLONG */
long long int rem; /* remainder */
} lldiv_t;
#endif
#if defined(_NETBSD_SOURCE)
typedef struct {
quad_t quot; /* quotient */
quad_t rem; /* remainder */
} qdiv_t;
#endif
#include <sys/null.h>
#define EXIT_FAILURE 1
#define EXIT_SUCCESS 0
#define RAND_MAX 0x7fffffff
extern size_t __mb_cur_max;
#define MB_CUR_MAX __mb_cur_max
__BEGIN_DECLS
__dead void _Exit __P((int)) __attribute__((__noreturn__));
__dead void abort __P((void)) __attribute__((__noreturn__));
__pure int abs __P((int));
int atexit __P((void (*)(void)));
double atof __P((const char *));
int atoi __P((const char *));
long atol __P((const char *));
#ifndef __BSEARCH_DECLARED
#define __BSEARCH_DECLARED
/* also in search.h */
void *bsearch __P((const void *, const void *, size_t, size_t,
int (*)(const void *, const void *)));
#endif /* __BSEARCH_DECLARED */
void *calloc __P((size_t, size_t));
div_t div __P((int, int));
__dead void exit __P((int)) __attribute__((__noreturn__));
void free __P((void *));
__aconst char *getenv __P((const char *));
__pure long
labs __P((long));
ldiv_t ldiv __P((long, long));
void *malloc __P((size_t));
void qsort __P((void *, size_t, size_t,
int (*)(const void *, const void *)));
int rand __P((void));
void *realloc __P((void *, size_t));
void srand __P((unsigned));
double strtod __P((const char * __restrict, char ** __restrict));
long strtol __P((const char * __restrict, char ** __restrict, int));
unsigned long
strtoul __P((const char * __restrict, char ** __restrict, int));
int system __P((const char *));
/* These are currently just stubs. */
int mblen __P((const char *, size_t));
size_t mbstowcs __P((wchar_t * __restrict, const char * __restrict, size_t));
int wctomb __P((char *, wchar_t));
int mbtowc __P((wchar_t * __restrict, const char * __restrict, size_t));
size_t wcstombs __P((char * __restrict, const wchar_t * __restrict, size_t));
#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
defined(_NETBSD_SOURCE)
/*
* IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
*/
#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_REENTRANT) || defined(_NETBSD_SOURCE)
int rand_r __P((unsigned int *));
#endif
/*
* X/Open Portability Guide >= Issue 4
*/
#if (_XOPEN_SOURCE - 0) >= 4 || defined(_NETBSD_SOURCE)
double drand48 __P((void));
double erand48 __P((unsigned short[3]));
long jrand48 __P((unsigned short[3]));
void lcong48 __P((unsigned short[7]));
long lrand48 __P((void));
long mrand48 __P((void));
long nrand48 __P((unsigned short[3]));
unsigned short *
seed48 __P((unsigned short[3]));
void srand48 __P((long));
int putenv __P((const char *));
#endif
/*
* X/Open Portability Guide >= Issue 4 Version 2
*/
#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
long a64l __P((const char *));
char *l64a __P((long));
char *initstate __P((unsigned long, char *, size_t));
long random __P((void));
char *setstate __P((char *));
void srandom __P((unsigned long));
char *mkdtemp __P((char *));
int mkstemp __P((char *));
#ifndef __AUDIT__
char *mktemp __P((char *));
#endif
int setkey __P((const char *));
char *realpath __P((const char *, char *));
int ttyslot __P((void));
void *valloc __P((size_t)); /* obsoleted by malloc() */
#endif
/*
* ISO C99
*/
#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
defined(_NETBSD_SOURCE)
/* LONGLONG */
long long int atoll __P((const char *));
/* LONGLONG */
long long int llabs __P((long long int));
/* LONGLONG */
lldiv_t lldiv __P((long long int, long long int));
/* LONGLONG */
long long int strtoll __P((const char * __restrict, char ** __restrict, int));
/* LONGLONG */
unsigned long long int
strtoull __P((const char * __restrict, char ** __restrict,
int));
#endif
/*
* The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
*/
#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
defined(_NETBSD_SOURCE)
int setenv __P((const char *, const char *, int));
#ifdef __LIBC12_SOURCE__
void unsetenv __P((const char *));
int __unsetenv13 __P((const char *));
#else
int unsetenv __P((const char *)) __RENAME(__unsetenv13);
#endif
#endif
/*
* Implementation-defined extensions
*/
#if defined(_NETBSD_SOURCE)
#if defined(alloca) && (alloca == __builtin_alloca) && (__GNUC__ < 2)
void *alloca __P((int)); /* built-in for gcc */
#else
void *alloca __P((size_t));
#endif /* __GNUC__ */
u_int32_t arc4random __P((void));
void arc4random_stir __P((void));
void arc4random_addrandom __P((u_char *, int));
char *getbsize __P((int *, long *));
char *cgetcap __P((char *, const char *, int));
int cgetclose __P((void));
int cgetent __P((char **, char **, const char *));
int cgetfirst __P((char **, char **));
int cgetmatch __P((const char *, const char *));
int cgetnext __P((char **, char **));
int cgetnum __P((char *, const char *, long *));
int cgetset __P((const char *));
int cgetstr __P((char *, const char *, char **));
int cgetustr __P((char *, const char *, char **));
int daemon __P((int, int));
__aconst char *devname __P((dev_t, mode_t));
int getloadavg __P((double [], int));
void cfree __P((void *));
int heapsort __P((void *, size_t, size_t,
int (*)(const void *, const void *)));
int mergesort __P((void *, size_t, size_t,
int (*)(const void *, const void *)));
int radixsort __P((const unsigned char **, int, const unsigned char *,
unsigned));
int sradixsort __P((const unsigned char **, int, const unsigned char *,
unsigned));
void setproctitle __P((const char *, ...))
__attribute__((__format__(__printf__, 1, 2)));
const char *getprogname __P((void)) __attribute__((__const__));
void setprogname __P((const char *));
quad_t qabs __P((quad_t));
quad_t strtoq __P((const char * __restrict, char ** __restrict, int));
u_quad_t strtouq __P((const char * __restrict, char ** __restrict, int));
/* LONGLONG */
long long strsuftoll(const char *, const char *, long long, long long);
/* LONGLONG */
long long strsuftollx(const char *, const char *, long long, long long,
char *, size_t);
int l64a_r __P((long, char *, int));
size_t shquote __P((const char *arg, char *buf, size_t bufsize));
size_t shquotev __P((int argc, char * const * argv, char *buf,
size_t bufsize));
#endif /* _NETBSD_SOURCE */
#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
#if defined(_NETBSD_SOURCE)
qdiv_t qdiv __P((quad_t, quad_t));
#endif
__END_DECLS
#endif /* !_STDLIB_H_ */
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