stdlib.h revision 229848 
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 229848 2012-01-09 06:36:28Z ed $
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 C11 functions.
153 */
154#if __ISO_C_VISIBLE >= 2011
155void *	aligned_alloc(size_t, size_t);
156int	at_quick_exit(void (*)(void));
157_Noreturn void
158	quick_exit(int);
159#endif /* __ISO_C_VISIBLE >= 2011 */
160/*
161 * Extensions made by POSIX relative to C.  We don't know yet which edition
162 * of POSIX made these extensions, so assume they've always been there until
163 * research can be done.
164 */
165#if __POSIX_VISIBLE /* >= ??? */
166int	 posix_memalign(void **, size_t, size_t); /* (ADV) */
167int	 rand_r(unsigned *);			/* (TSF) */
168char	*realpath(const char * __restrict, char * __restrict);
169int	 setenv(const char *, const char *, int);
170int	 unsetenv(const char *);
171#endif
172
173#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
174int	 getsubopt(char **, char *const *, char **);
175#ifndef _MKDTEMP_DECLARED
176char	*mkdtemp(char *);
177#define	_MKDTEMP_DECLARED
178#endif
179#ifndef _MKSTEMP_DECLARED
180int	 mkstemp(char *);
181#define	_MKSTEMP_DECLARED
182#endif
183#endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
184
185/*
186 * The only changes to the XSI namespace in revision 6 were the deletion
187 * of the ttyslot() and valloc() functions, which FreeBSD never declared
188 * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
189 * FreeBSD also does not have, and mktemp(), are to be deleted.
190 */
191#if __XSI_VISIBLE
192/* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
193long	 a64l(const char *);
194double	 drand48(void);
195/* char	*ecvt(double, int, int * __restrict, int * __restrict); */
196double	 erand48(unsigned short[3]);
197/* char	*fcvt(double, int, int * __restrict, int * __restrict); */
198/* char	*gcvt(double, int, int * __restrict, int * __restrict); */
199int	 grantpt(int);
200char	*initstate(unsigned long /* XSI requires u_int */, char *, long);
201long	 jrand48(unsigned short[3]);
202char	*l64a(long);
203void	 lcong48(unsigned short[7]);
204long	 lrand48(void);
205#if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
206char	*mktemp(char *);
207#define	_MKTEMP_DECLARED
208#endif
209long	 mrand48(void);
210long	 nrand48(unsigned short[3]);
211int	 posix_openpt(int);
212char	*ptsname(int);
213int	 putenv(char *);
214long	 random(void);
215unsigned short
216	*seed48(unsigned short[3]);
217#ifndef _SETKEY_DECLARED
218int	 setkey(const char *);
219#define	_SETKEY_DECLARED
220#endif
221char	*setstate(/* const */ char *);
222void	 srand48(long);
223void	 srandom(unsigned long);
224int	 unlockpt(int);
225#endif /* __XSI_VISIBLE */
226
227#if __BSD_VISIBLE
228extern const char *_malloc_options;
229extern void (*_malloc_message)(const char *, const char *, const char *,
230	    const char *);
231
232/*
233 * The alloca() function can't be implemented in C, and on some
234 * platforms it can't be implemented at all as a callable function.
235 * The GNU C compiler provides a built-in alloca() which we can use;
236 * in all other cases, provide a prototype, mainly to pacify various
237 * incarnations of lint.  On platforms where alloca() is not in libc,
238 * programs which use it will fail to link when compiled with non-GNU
239 * compilers.
240 */
241#if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
242#undef  alloca	/* some GNU bits try to get cute and define this on their own */
243#define alloca(sz) __builtin_alloca(sz)
244#elif defined(lint)
245void	*alloca(size_t);
246#endif
247
248void	 abort2(const char *, int, void **) __dead2;
249__uint32_t
250	 arc4random(void);
251void	 arc4random_addrandom(unsigned char *, int);
252void	 arc4random_buf(void *, size_t);
253void	 arc4random_stir(void);
254__uint32_t
255	 arc4random_uniform(__uint32_t);
256char	*getbsize(int *, long *);
257					/* getcap(3) functions */
258char	*cgetcap(char *, const char *, int);
259int	 cgetclose(void);
260int	 cgetent(char **, char **, const char *);
261int	 cgetfirst(char **, char **);
262int	 cgetmatch(const char *, const char *);
263int	 cgetnext(char **, char **);
264int	 cgetnum(char *, const char *, long *);
265int	 cgetset(const char *);
266int	 cgetstr(char *, const char *, char **);
267int	 cgetustr(char *, const char *, char **);
268
269int	 daemon(int, int);
270char	*devname(__dev_t, __mode_t);
271char 	*devname_r(__dev_t, __mode_t, char *, int);
272char	*fdevname(int);
273char 	*fdevname_r(int, char *, int);
274int	 getloadavg(double [], int);
275const char *
276	 getprogname(void);
277
278int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
279int	 l64a_r(long, char *, int);
280int	 mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
281void	 qsort_r(void *, size_t, size_t, void *,
282	    int (*)(void *, const void *, const void *));
283int	 radixsort(const unsigned char **, int, const unsigned char *,
284	    unsigned);
285void    *reallocf(void *, size_t);
286int	 rpmatch(const char *);
287void	 setprogname(const char *);
288int	 sradixsort(const unsigned char **, int, const unsigned char *,
289	    unsigned);
290void	 sranddev(void);
291void	 srandomdev(void);
292long long
293	strtonum(const char *, long long, long long, const char **);
294
295/* Deprecated interfaces, to be removed in FreeBSD 6.0. */
296__int64_t
297	 strtoq(const char *, char **, int);
298__uint64_t
299	 strtouq(const char *, char **, int);
300
301extern char *suboptarg;			/* getsubopt(3) external variable */
302#endif /* __BSD_VISIBLE */
303__END_DECLS
304
305#endif /* !_STDLIB_H_ */
306