stdlib.h revision 206893 
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 206893 2010-04-20 10:16:44Z kib $
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
74extern int __mb_cur_max;
75#define	MB_CUR_MAX	__mb_cur_max
76
77__BEGIN_DECLS
78void	 abort(void) __dead2;
79int	 abs(int) __pure2;
80int	 atexit(void (*)(void));
81double	 atof(const char *);
82int	 atoi(const char *);
83long	 atol(const char *);
84void	*bsearch(const void *, const void *, size_t,
85	    size_t, int (*)(const void *, const void *));
86void	*calloc(size_t, size_t) __malloc_like;
87div_t	 div(int, int) __pure2;
88void	 exit(int) __dead2;
89void	 free(void *);
90char	*getenv(const char *);
91long	 labs(long) __pure2;
92ldiv_t	 ldiv(long, long) __pure2;
93void	*malloc(size_t) __malloc_like;
94int	 mblen(const char *, size_t);
95size_t	 mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
96int	 mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
97void	 qsort(void *, size_t, size_t,
98	    int (*)(const void *, const void *));
99int	 rand(void);
100void	*realloc(void *, size_t);
101void	 srand(unsigned);
102double	 strtod(const char * __restrict, char ** __restrict);
103float	 strtof(const char * __restrict, char ** __restrict);
104long	 strtol(const char * __restrict, char ** __restrict, int);
105long double
106	 strtold(const char * __restrict, char ** __restrict);
107unsigned long
108	 strtoul(const char * __restrict, char ** __restrict, int);
109int	 system(const char *);
110int	 wctomb(char *, wchar_t);
111size_t	 wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
112
113/*
114 * Functions added in C99 which we make conditionally available in the
115 * BSD^C89 namespace if the compiler supports `long long'.
116 * The #if test is more complicated than it ought to be because
117 * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long'
118 * is not supported in the compilation environment (which therefore means
119 * that it can't really be ISO C99).
120 *
121 * (The only other extension made by C99 in thie header is _Exit().)
122 */
123#if __ISO_C_VISIBLE >= 1999
124#ifdef __LONG_LONG_SUPPORTED
125/* LONGLONG */
126typedef struct {
127	long long quot;
128	long long rem;
129} lldiv_t;
130
131/* LONGLONG */
132long long
133	 atoll(const char *);
134/* LONGLONG */
135long long
136	 llabs(long long) __pure2;
137/* LONGLONG */
138lldiv_t	 lldiv(long long, long long) __pure2;
139/* LONGLONG */
140long long
141	 strtoll(const char * __restrict, char ** __restrict, int);
142/* LONGLONG */
143unsigned long long
144	 strtoull(const char * __restrict, char ** __restrict, int);
145#endif /* __LONG_LONG_SUPPORTED */
146
147void	 _Exit(int) __dead2;
148#endif /* __ISO_C_VISIBLE >= 1999 */
149
150/*
151 * Extensions made by POSIX relative to C.  We don't know yet which edition
152 * of POSIX made these extensions, so assume they've always been there until
153 * research can be done.
154 */
155#if __POSIX_VISIBLE /* >= ??? */
156int	 posix_memalign(void **, size_t, size_t); /* (ADV) */
157int	 rand_r(unsigned *);			/* (TSF) */
158int	 setenv(const char *, const char *, int);
159int	 unsetenv(const char *);
160#endif
161
162#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
163int	 getsubopt(char **, char *const *, char **);
164#ifndef _MKDTEMP_DECLARED
165char	*mkdtemp(char *);
166#define	_MKDTEMP_DECLARED
167#endif
168#ifndef _MKSTEMP_DECLARED
169int	 mkstemp(char *);
170#define	_MKSTEMP_DECLARED
171#endif
172#endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
173
174/*
175 * The only changes to the XSI namespace in revision 6 were the deletion
176 * of the ttyslot() and valloc() functions, which FreeBSD never declared
177 * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
178 * FreeBSD also does not have, and mktemp(), are to be deleted.
179 */
180#if __XSI_VISIBLE
181/* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
182long	 a64l(const char *);
183double	 drand48(void);
184/* char	*ecvt(double, int, int * __restrict, int * __restrict); */
185double	 erand48(unsigned short[3]);
186/* char	*fcvt(double, int, int * __restrict, int * __restrict); */
187/* char	*gcvt(double, int, int * __restrict, int * __restrict); */
188int	 grantpt(int);
189char	*initstate(unsigned long /* XSI requires u_int */, char *, long);
190long	 jrand48(unsigned short[3]);
191char	*l64a(long);
192void	 lcong48(unsigned short[7]);
193long	 lrand48(void);
194#if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
195char	*mktemp(char *);
196#define	_MKTEMP_DECLARED
197#endif
198long	 mrand48(void);
199long	 nrand48(unsigned short[3]);
200int	 posix_openpt(int);
201char	*ptsname(int);
202int	 putenv(char *);
203long	 random(void);
204char	*realpath(const char * __restrict, char * __restrict);
205unsigned short
206	*seed48(unsigned short[3]);
207#ifndef _SETKEY_DECLARED
208int	 setkey(const char *);
209#define	_SETKEY_DECLARED
210#endif
211char	*setstate(/* const */ char *);
212void	 srand48(long);
213void	 srandom(unsigned long);
214int	 unlockpt(int);
215#endif /* __XSI_VISIBLE */
216
217#if __BSD_VISIBLE
218extern const char *_malloc_options;
219extern void (*_malloc_message)(const char *, const char *, const char *,
220	    const char *);
221
222/*
223 * The alloca() function can't be implemented in C, and on some
224 * platforms it can't be implemented at all as a callable function.
225 * The GNU C compiler provides a built-in alloca() which we can use;
226 * in all other cases, provide a prototype, mainly to pacify various
227 * incarnations of lint.  On platforms where alloca() is not in libc,
228 * programs which use it will fail to link when compiled with non-GNU
229 * compilers.
230 */
231#if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
232#undef  alloca	/* some GNU bits try to get cute and define this on their own */
233#define alloca(sz) __builtin_alloca(sz)
234#elif defined(lint)
235void	*alloca(size_t);
236#endif
237
238void	 abort2(const char *, int, void **) __dead2;
239__uint32_t
240	 arc4random(void);
241void	 arc4random_addrandom(unsigned char *, int);
242void	 arc4random_buf(void *, size_t);
243void	 arc4random_stir(void);
244__uint32_t
245	 arc4random_uniform(__uint32_t);
246char	*getbsize(int *, long *);
247					/* getcap(3) functions */
248char	*cgetcap(char *, const char *, int);
249int	 cgetclose(void);
250int	 cgetent(char **, char **, const char *);
251int	 cgetfirst(char **, char **);
252int	 cgetmatch(const char *, const char *);
253int	 cgetnext(char **, char **);
254int	 cgetnum(char *, const char *, long *);
255int	 cgetset(const char *);
256int	 cgetstr(char *, const char *, char **);
257int	 cgetustr(char *, const char *, char **);
258
259int	 daemon(int, int);
260char	*devname(__dev_t, __mode_t);
261char 	*devname_r(__dev_t, __mode_t, char *, int);
262char	*fdevname(int);
263char 	*fdevname_r(int, char *, int);
264int	 getloadavg(double [], int);
265__const char *
266	 getprogname(void);
267
268int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
269int	 l64a_r(long, char *, int);
270int	 mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
271void	 qsort_r(void *, size_t, size_t, void *,
272	    int (*)(void *, const void *, const void *));
273int	 radixsort(const unsigned char **, int, const unsigned char *,
274	    unsigned);
275void    *reallocf(void *, size_t);
276int	 rpmatch(const char *);
277void	 setprogname(const char *);
278int	 sradixsort(const unsigned char **, int, const unsigned char *,
279	    unsigned);
280void	 sranddev(void);
281void	 srandomdev(void);
282long long
283	strtonum(const char *, long long, long long, const char **);
284
285/* Deprecated interfaces, to be removed in FreeBSD 6.0. */
286__int64_t
287	 strtoq(const char *, char **, int);
288__uint64_t
289	 strtouq(const char *, char **, int);
290
291extern char *suboptarg;			/* getsubopt(3) external variable */
292#endif /* __BSD_VISIBLE */
293__END_DECLS
294
295#endif /* !_STDLIB_H_ */
296