stdlib.h revision 228330 
1/*-
2 * Copyright (c) 1990, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	@(#)stdlib.h	8.5 (Berkeley) 5/19/95
30 * $FreeBSD: head/include/stdlib.h 228330 2011-12-07 21:17:50Z theraven $
31 */
32
33#ifndef _STDLIB_H_
34#define	_STDLIB_H_
35
36#include <sys/cdefs.h>
37#include <sys/_null.h>
38#include <sys/_types.h>
39
40#if __BSD_VISIBLE
41#ifndef _RUNE_T_DECLARED
42typedef	__rune_t	rune_t;
43#define	_RUNE_T_DECLARED
44#endif
45#endif
46
47#ifndef _SIZE_T_DECLARED
48typedef	__size_t	size_t;
49#define	_SIZE_T_DECLARED
50#endif
51
52#ifndef	__cplusplus
53#ifndef _WCHAR_T_DECLARED
54typedef	__wchar_t	wchar_t;
55#define	_WCHAR_T_DECLARED
56#endif
57#endif
58
59typedef struct {
60	int	quot;		/* quotient */
61	int	rem;		/* remainder */
62} div_t;
63
64typedef struct {
65	long	quot;
66	long	rem;
67} ldiv_t;
68
69#define	EXIT_FAILURE	1
70#define	EXIT_SUCCESS	0
71
72#define	RAND_MAX	0x7fffffff
73
74__BEGIN_DECLS
75extern int __mb_cur_max;
76extern int ___mb_cur_max(void);
77#define	MB_CUR_MAX	(___mb_cur_max())
78
79_Noreturn void	 abort(void);
80int	 abs(int) __pure2;
81int	 atexit(void (*)(void));
82double	 atof(const char *);
83int	 atoi(const char *);
84long	 atol(const char *);
85void	*bsearch(const void *, const void *, size_t,
86	    size_t, int (*)(const void *, const void *));
87void	*calloc(size_t, size_t) __malloc_like;
88div_t	 div(int, int) __pure2;
89_Noreturn void	 exit(int);
90void	 free(void *);
91char	*getenv(const char *);
92long	 labs(long) __pure2;
93ldiv_t	 ldiv(long, long) __pure2;
94void	*malloc(size_t) __malloc_like;
95int	 mblen(const char *, size_t);
96size_t	 mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
97int	 mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
98void	 qsort(void *, size_t, size_t,
99	    int (*)(const void *, const void *));
100int	 rand(void);
101void	*realloc(void *, size_t);
102void	 srand(unsigned);
103double	 strtod(const char * __restrict, char ** __restrict);
104float	 strtof(const char * __restrict, char ** __restrict);
105long	 strtol(const char * __restrict, char ** __restrict, int);
106long double
107	 strtold(const char * __restrict, char ** __restrict);
108unsigned long
109	 strtoul(const char * __restrict, char ** __restrict, int);
110int	 system(const char *);
111int	 wctomb(char *, wchar_t);
112size_t	 wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
113
114/*
115 * Functions added in C99 which we make conditionally available in the
116 * BSD^C89 namespace if the compiler supports `long long'.
117 * The #if test is more complicated than it ought to be because
118 * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long'
119 * is not supported in the compilation environment (which therefore means
120 * that it can't really be ISO C99).
121 *
122 * (The only other extension made by C99 in thie header is _Exit().)
123 */
124#if __ISO_C_VISIBLE >= 1999
125#ifdef __LONG_LONG_SUPPORTED
126/* LONGLONG */
127typedef struct {
128	long long quot;
129	long long rem;
130} lldiv_t;
131
132/* LONGLONG */
133long long
134	 atoll(const char *);
135/* LONGLONG */
136long long
137	 llabs(long long) __pure2;
138/* LONGLONG */
139lldiv_t	 lldiv(long long, long long) __pure2;
140/* LONGLONG */
141long long
142	 strtoll(const char * __restrict, char ** __restrict, int);
143/* LONGLONG */
144unsigned long long
145	 strtoull(const char * __restrict, char ** __restrict, int);
146#endif /* __LONG_LONG_SUPPORTED */
147
148_Noreturn void	 _Exit(int);
149#endif /* __ISO_C_VISIBLE >= 1999 */
150
151/*
152 * If we're in a mode greater than C99, expose C1x functions.
153 */
154#if __ISO_C_VISIBLE > 1999
155_Noreturn void quick_exit(int)
156int
157at_quick_exit(void (*func)(void));
158#endif /* __ISO_C_VISIBLE > 1999 */
159/*
160 * Extensions made by POSIX relative to C.  We don't know yet which edition
161 * of POSIX made these extensions, so assume they've always been there until
162 * research can be done.
163 */
164#if __POSIX_VISIBLE /* >= ??? */
165int	 posix_memalign(void **, size_t, size_t); /* (ADV) */
166int	 rand_r(unsigned *);			/* (TSF) */
167char	*realpath(const char * __restrict, char * __restrict);
168int	 setenv(const char *, const char *, int);
169int	 unsetenv(const char *);
170#endif
171
172#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
173int	 getsubopt(char **, char *const *, char **);
174#ifndef _MKDTEMP_DECLARED
175char	*mkdtemp(char *);
176#define	_MKDTEMP_DECLARED
177#endif
178#ifndef _MKSTEMP_DECLARED
179int	 mkstemp(char *);
180#define	_MKSTEMP_DECLARED
181#endif
182#endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
183
184/*
185 * The only changes to the XSI namespace in revision 6 were the deletion
186 * of the ttyslot() and valloc() functions, which FreeBSD never declared
187 * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
188 * FreeBSD also does not have, and mktemp(), are to be deleted.
189 */
190#if __XSI_VISIBLE
191/* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
192long	 a64l(const char *);
193double	 drand48(void);
194/* char	*ecvt(double, int, int * __restrict, int * __restrict); */
195double	 erand48(unsigned short[3]);
196/* char	*fcvt(double, int, int * __restrict, int * __restrict); */
197/* char	*gcvt(double, int, int * __restrict, int * __restrict); */
198int	 grantpt(int);
199char	*initstate(unsigned long /* XSI requires u_int */, char *, long);
200long	 jrand48(unsigned short[3]);
201char	*l64a(long);
202void	 lcong48(unsigned short[7]);
203long	 lrand48(void);
204#if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
205char	*mktemp(char *);
206#define	_MKTEMP_DECLARED
207#endif
208long	 mrand48(void);
209long	 nrand48(unsigned short[3]);
210int	 posix_openpt(int);
211char	*ptsname(int);
212int	 putenv(char *);
213long	 random(void);
214unsigned short
215	*seed48(unsigned short[3]);
216#ifndef _SETKEY_DECLARED
217int	 setkey(const char *);
218#define	_SETKEY_DECLARED
219#endif
220char	*setstate(/* const */ char *);
221void	 srand48(long);
222void	 srandom(unsigned long);
223int	 unlockpt(int);
224#endif /* __XSI_VISIBLE */
225
226#if __BSD_VISIBLE
227extern const char *_malloc_options;
228extern void (*_malloc_message)(const char *, const char *, const char *,
229	    const char *);
230
231/*
232 * The alloca() function can't be implemented in C, and on some
233 * platforms it can't be implemented at all as a callable function.
234 * The GNU C compiler provides a built-in alloca() which we can use;
235 * in all other cases, provide a prototype, mainly to pacify various
236 * incarnations of lint.  On platforms where alloca() is not in libc,
237 * programs which use it will fail to link when compiled with non-GNU
238 * compilers.
239 */
240#if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
241#undef  alloca	/* some GNU bits try to get cute and define this on their own */
242#define alloca(sz) __builtin_alloca(sz)
243#elif defined(lint)
244void	*alloca(size_t);
245#endif
246
247void	 abort2(const char *, int, void **) __dead2;
248__uint32_t
249	 arc4random(void);
250void	 arc4random_addrandom(unsigned char *, int);
251void	 arc4random_buf(void *, size_t);
252void	 arc4random_stir(void);
253__uint32_t
254	 arc4random_uniform(__uint32_t);
255char	*getbsize(int *, long *);
256					/* getcap(3) functions */
257char	*cgetcap(char *, const char *, int);
258int	 cgetclose(void);
259int	 cgetent(char **, char **, const char *);
260int	 cgetfirst(char **, char **);
261int	 cgetmatch(const char *, const char *);
262int	 cgetnext(char **, char **);
263int	 cgetnum(char *, const char *, long *);
264int	 cgetset(const char *);
265int	 cgetstr(char *, const char *, char **);
266int	 cgetustr(char *, const char *, char **);
267
268int	 daemon(int, int);
269char	*devname(__dev_t, __mode_t);
270char 	*devname_r(__dev_t, __mode_t, char *, int);
271char	*fdevname(int);
272char 	*fdevname_r(int, char *, int);
273int	 getloadavg(double [], int);
274__const char *
275	 getprogname(void);
276
277int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
278int	 l64a_r(long, char *, int);
279int	 mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
280void	 qsort_r(void *, size_t, size_t, void *,
281	    int (*)(void *, const void *, const void *));
282int	 radixsort(const unsigned char **, int, const unsigned char *,
283	    unsigned);
284void    *reallocf(void *, size_t);
285int	 rpmatch(const char *);
286void	 setprogname(const char *);
287int	 sradixsort(const unsigned char **, int, const unsigned char *,
288	    unsigned);
289void	 sranddev(void);
290void	 srandomdev(void);
291long long
292	strtonum(const char *, long long, long long, const char **);
293
294/* Deprecated interfaces, to be removed in FreeBSD 6.0. */
295__int64_t
296	 strtoq(const char *, char **, int);
297__uint64_t
298	 strtouq(const char *, char **, int);
299
300extern char *suboptarg;			/* getsubopt(3) external variable */
301#endif /* __BSD_VISIBLE */
302__END_DECLS
303
304#endif /* !_STDLIB_H_ */
305