stdlib.h revision 234370 
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 234370 2012-04-17 07:22:14Z jasone $
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
75#ifdef _XLOCALE_H_
76#include <xlocale/_stdlib.h>
77#endif
78extern int __mb_cur_max;
79extern int ___mb_cur_max(void);
80#define	MB_CUR_MAX	(___mb_cur_max())
81
82_Noreturn void	 abort(void);
83int	 abs(int) __pure2;
84int	 atexit(void (*)(void));
85double	 atof(const char *);
86int	 atoi(const char *);
87long	 atol(const char *);
88void	*bsearch(const void *, const void *, size_t,
89	    size_t, int (*)(const void *, const void *));
90void	*calloc(size_t, size_t) __malloc_like;
91div_t	 div(int, int) __pure2;
92_Noreturn void	 exit(int);
93void	 free(void *);
94char	*getenv(const char *);
95long	 labs(long) __pure2;
96ldiv_t	 ldiv(long, long) __pure2;
97void	*malloc(size_t) __malloc_like;
98int	 mblen(const char *, size_t);
99size_t	 mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
100int	 mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
101void	 qsort(void *, size_t, size_t,
102	    int (*)(const void *, const void *));
103int	 rand(void);
104void	*realloc(void *, size_t);
105void	 srand(unsigned);
106double	 strtod(const char * __restrict, char ** __restrict);
107float	 strtof(const char * __restrict, char ** __restrict);
108long	 strtol(const char * __restrict, char ** __restrict, int);
109long double
110	 strtold(const char * __restrict, char ** __restrict);
111unsigned long
112	 strtoul(const char * __restrict, char ** __restrict, int);
113int	 system(const char *);
114int	 wctomb(char *, wchar_t);
115size_t	 wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
116
117/*
118 * Functions added in C99 which we make conditionally available in the
119 * BSD^C89 namespace if the compiler supports `long long'.
120 * The #if test is more complicated than it ought to be because
121 * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long'
122 * is not supported in the compilation environment (which therefore means
123 * that it can't really be ISO C99).
124 *
125 * (The only other extension made by C99 in thie header is _Exit().)
126 */
127#if __ISO_C_VISIBLE >= 1999
128#ifdef __LONG_LONG_SUPPORTED
129/* LONGLONG */
130typedef struct {
131	long long quot;
132	long long rem;
133} lldiv_t;
134
135/* LONGLONG */
136long long
137	 atoll(const char *);
138/* LONGLONG */
139long long
140	 llabs(long long) __pure2;
141/* LONGLONG */
142lldiv_t	 lldiv(long long, long long) __pure2;
143/* LONGLONG */
144long long
145	 strtoll(const char * __restrict, char ** __restrict, int);
146/* LONGLONG */
147unsigned long long
148	 strtoull(const char * __restrict, char ** __restrict, int);
149#endif /* __LONG_LONG_SUPPORTED */
150
151_Noreturn void	 _Exit(int);
152#endif /* __ISO_C_VISIBLE >= 1999 */
153
154/*
155 * If we're in a mode greater than C99, expose C11 functions.
156 */
157#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
158void *	aligned_alloc(size_t, size_t) __malloc_like;
159int	at_quick_exit(void (*)(void));
160_Noreturn void
161	quick_exit(int);
162#endif /* __ISO_C_VISIBLE >= 2011 */
163/*
164 * Extensions made by POSIX relative to C.  We don't know yet which edition
165 * of POSIX made these extensions, so assume they've always been there until
166 * research can be done.
167 */
168#if __POSIX_VISIBLE /* >= ??? */
169int	 posix_memalign(void **, size_t, size_t); /* (ADV) */
170int	 rand_r(unsigned *);			/* (TSF) */
171char	*realpath(const char * __restrict, char * __restrict);
172int	 setenv(const char *, const char *, int);
173int	 unsetenv(const char *);
174#endif
175
176#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
177int	 getsubopt(char **, char *const *, char **);
178#ifndef _MKDTEMP_DECLARED
179char	*mkdtemp(char *);
180#define	_MKDTEMP_DECLARED
181#endif
182#ifndef _MKSTEMP_DECLARED
183int	 mkstemp(char *);
184#define	_MKSTEMP_DECLARED
185#endif
186#endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
187
188/*
189 * The only changes to the XSI namespace in revision 6 were the deletion
190 * of the ttyslot() and valloc() functions, which FreeBSD never declared
191 * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
192 * FreeBSD also does not have, and mktemp(), are to be deleted.
193 */
194#if __XSI_VISIBLE
195/* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
196long	 a64l(const char *);
197double	 drand48(void);
198/* char	*ecvt(double, int, int * __restrict, int * __restrict); */
199double	 erand48(unsigned short[3]);
200/* char	*fcvt(double, int, int * __restrict, int * __restrict); */
201/* char	*gcvt(double, int, int * __restrict, int * __restrict); */
202int	 grantpt(int);
203char	*initstate(unsigned long /* XSI requires u_int */, char *, long);
204long	 jrand48(unsigned short[3]);
205char	*l64a(long);
206void	 lcong48(unsigned short[7]);
207long	 lrand48(void);
208#if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
209char	*mktemp(char *);
210#define	_MKTEMP_DECLARED
211#endif
212long	 mrand48(void);
213long	 nrand48(unsigned short[3]);
214int	 posix_openpt(int);
215char	*ptsname(int);
216int	 putenv(char *);
217long	 random(void);
218unsigned short
219	*seed48(unsigned short[3]);
220#ifndef _SETKEY_DECLARED
221int	 setkey(const char *);
222#define	_SETKEY_DECLARED
223#endif
224char	*setstate(/* const */ char *);
225void	 srand48(long);
226void	 srandom(unsigned long);
227int	 unlockpt(int);
228#endif /* __XSI_VISIBLE */
229
230#if __BSD_VISIBLE
231extern const char *malloc_conf;
232extern void (*malloc_message)(void *, const char *);
233
234/*
235 * The alloca() function can't be implemented in C, and on some
236 * platforms it can't be implemented at all as a callable function.
237 * The GNU C compiler provides a built-in alloca() which we can use;
238 * in all other cases, provide a prototype, mainly to pacify various
239 * incarnations of lint.  On platforms where alloca() is not in libc,
240 * programs which use it will fail to link when compiled with non-GNU
241 * compilers.
242 */
243#if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
244#undef  alloca	/* some GNU bits try to get cute and define this on their own */
245#define alloca(sz) __builtin_alloca(sz)
246#elif defined(lint)
247void	*alloca(size_t);
248#endif
249
250void	 abort2(const char *, int, void **) __dead2;
251__uint32_t
252	 arc4random(void);
253void	 arc4random_addrandom(unsigned char *, int);
254void	 arc4random_buf(void *, size_t);
255void	 arc4random_stir(void);
256__uint32_t
257	 arc4random_uniform(__uint32_t);
258char	*getbsize(int *, long *);
259					/* getcap(3) functions */
260char	*cgetcap(char *, const char *, int);
261int	 cgetclose(void);
262int	 cgetent(char **, char **, const char *);
263int	 cgetfirst(char **, char **);
264int	 cgetmatch(const char *, const char *);
265int	 cgetnext(char **, char **);
266int	 cgetnum(char *, const char *, long *);
267int	 cgetset(const char *);
268int	 cgetstr(char *, const char *, char **);
269int	 cgetustr(char *, const char *, char **);
270
271int	 daemon(int, int);
272char	*devname(__dev_t, __mode_t);
273char 	*devname_r(__dev_t, __mode_t, char *, int);
274char	*fdevname(int);
275char 	*fdevname_r(int, char *, int);
276int	 getloadavg(double [], int);
277const char *
278	 getprogname(void);
279
280int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
281int	 l64a_r(long, char *, int);
282int	 mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
283void	 qsort_r(void *, size_t, size_t, void *,
284	    int (*)(void *, const void *, const void *));
285int	 radixsort(const unsigned char **, int, const unsigned char *,
286	    unsigned);
287void    *reallocf(void *, size_t);
288int	 rpmatch(const char *);
289void	 setprogname(const char *);
290int	 sradixsort(const unsigned char **, int, const unsigned char *,
291	    unsigned);
292void	 sranddev(void);
293void	 srandomdev(void);
294long long
295	strtonum(const char *, long long, long long, const char **);
296
297/* Deprecated interfaces, to be removed in FreeBSD 6.0. */
298__int64_t
299	 strtoq(const char *, char **, int);
300__uint64_t
301	 strtouq(const char *, char **, int);
302
303extern char *suboptarg;			/* getsubopt(3) external variable */
304#endif /* __BSD_VISIBLE */
305__END_DECLS
306
307#endif /* !_STDLIB_H_ */
308