stdlib.h revision 180658 
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. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)stdlib.h	8.5 (Berkeley) 5/19/95
34 * $FreeBSD: head/include/stdlib.h 180658 2008-07-21 14:03:04Z ache $
35 */
36
37#ifndef _STDLIB_H_
38#define	_STDLIB_H_
39
40#include <sys/cdefs.h>
41#include <sys/_null.h>
42#include <sys/_types.h>
43
44#if __BSD_VISIBLE
45#ifndef _RUNE_T_DECLARED
46typedef	__rune_t	rune_t;
47#define	_RUNE_T_DECLARED
48#endif
49#endif
50
51#ifndef _SIZE_T_DECLARED
52typedef	__size_t	size_t;
53#define	_SIZE_T_DECLARED
54#endif
55
56#ifndef	__cplusplus
57#ifndef _WCHAR_T_DECLARED
58typedef	__wchar_t	wchar_t;
59#define	_WCHAR_T_DECLARED
60#endif
61#endif
62
63typedef struct {
64	int	quot;		/* quotient */
65	int	rem;		/* remainder */
66} div_t;
67
68typedef struct {
69	long	quot;
70	long	rem;
71} ldiv_t;
72
73#define	EXIT_FAILURE	1
74#define	EXIT_SUCCESS	0
75
76#define	RAND_MAX	0x7fffffff
77
78extern int __mb_cur_max;
79#define	MB_CUR_MAX	__mb_cur_max
80
81__BEGIN_DECLS
82void	 abort(void) __dead2;
83void	 abort2(const char *, int, void **) __dead2;
84int	 abs(int) __pure2;
85int	 atexit(void (*)(void));
86double	 atof(const char *);
87int	 atoi(const char *);
88long	 atol(const char *);
89void	*bsearch(const void *, const void *, size_t,
90	    size_t, int (*)(const void *, const void *));
91void	*calloc(size_t, size_t);
92div_t	 div(int, int) __pure2;
93void	 exit(int) __dead2;
94void	 free(void *);
95char	*getenv(const char *);
96long	 labs(long) __pure2;
97ldiv_t	 ldiv(long, long) __pure2;
98void	*malloc(size_t);
99int	 mblen(const char *, size_t);
100size_t	 mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
101int	 mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
102void	 qsort(void *, size_t, size_t,
103	    int (*)(const void *, const void *));
104int	 rand(void);
105void	*realloc(void *, size_t);
106void	 srand(unsigned);
107double	 strtod(const char * __restrict, char ** __restrict);
108float	 strtof(const char * __restrict, char ** __restrict);
109long	 strtol(const char * __restrict, char ** __restrict, int);
110long double
111	 strtold(const char * __restrict, char ** __restrict);
112unsigned long
113	 strtoul(const char * __restrict, char ** __restrict, int);
114int	 system(const char *);
115int	 wctomb(char *, wchar_t);
116size_t	 wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
117
118/*
119 * Functions added in C99 which we make conditionally available in the
120 * BSD^C89 namespace if the compiler supports `long long'.
121 * The #if test is more complicated than it ought to be because
122 * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long'
123 * is not supported in the compilation environment (which therefore means
124 * that it can't really be ISO C99).
125 *
126 * (The only other extension made by C99 in thie header is _Exit().)
127 */
128#if __ISO_C_VISIBLE >= 1999
129#ifdef __LONG_LONG_SUPPORTED
130/* LONGLONG */
131typedef struct {
132	long long quot;
133	long long rem;
134} lldiv_t;
135
136/* LONGLONG */
137long long
138	 atoll(const char *);
139/* LONGLONG */
140long long
141	 llabs(long long) __pure2;
142/* LONGLONG */
143lldiv_t	 lldiv(long long, long long) __pure2;
144/* LONGLONG */
145long long
146	 strtoll(const char * __restrict, char ** __restrict, int);
147/* LONGLONG */
148unsigned long long
149	 strtoull(const char * __restrict, char ** __restrict, int);
150#endif /* __LONG_LONG_SUPPORTED */
151
152void	 _Exit(int) __dead2;
153#endif /* __ISO_C_VISIBLE >= 1999 */
154
155/*
156 * Extensions made by POSIX relative to C.  We don't know yet which edition
157 * of POSIX made these extensions, so assume they've always been there until
158 * research can be done.
159 */
160#if __POSIX_VISIBLE /* >= ??? */
161int	 posix_memalign(void **, size_t, size_t); /* (ADV) */
162int	 rand_r(unsigned *);			/* (TSF) */
163int	 setenv(const char *, const char *, int);
164int	 unsetenv(const char *);
165#endif
166
167/*
168 * The only changes to the XSI namespace in revision 6 were the deletion
169 * of the ttyslot() and valloc() functions, which FreeBSD never declared
170 * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
171 * FreeBSD also does not have, and mktemp(), are to be deleted.
172 */
173#if __XSI_VISIBLE
174/* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
175long	 a64l(const char *);
176double	 drand48(void);
177/* char	*ecvt(double, int, int * __restrict, int * __restrict); */
178double	 erand48(unsigned short[3]);
179/* char	*fcvt(double, int, int * __restrict, int * __restrict); */
180/* char	*gcvt(double, int, int * __restrict, int * __restrict); */
181int	 getsubopt(char **, char *const *, char **);
182int	 grantpt(int);
183char	*initstate(unsigned long /* XSI requires u_int */, char *, long);
184long	 jrand48(unsigned short[3]);
185char	*l64a(long);
186void	 lcong48(unsigned short[7]);
187long	 lrand48(void);
188#ifndef _MKSTEMP_DECLARED
189int	 mkstemp(char *);
190#define	_MKSTEMP_DECLARED
191#endif
192#ifndef _MKTEMP_DECLARED
193char	*mktemp(char *);
194#define	_MKTEMP_DECLARED
195#endif
196long	 mrand48(void);
197long	 nrand48(unsigned short[3]);
198int	 posix_openpt(int);
199char	*ptsname(int);
200int	 putenv(char *);
201long	 random(void);
202char	*realpath(const char *, char resolved_path[]);
203unsigned short
204	*seed48(unsigned short[3]);
205#ifndef _SETKEY_DECLARED
206int	 setkey(const char *);
207#define	_SETKEY_DECLARED
208#endif
209char	*setstate(/* const */ char *);
210void	 srand48(long);
211void	 srandom(unsigned long);
212int	 unlockpt(int);
213#endif /* __XSI_VISIBLE */
214
215#if __BSD_VISIBLE
216extern const char *_malloc_options;
217extern void (*_malloc_message)(const char *, const char *, const char *,
218	    const char *);
219
220/*
221 * The alloca() function can't be implemented in C, and on some
222 * platforms it can't be implemented at all as a callable function.
223 * The GNU C compiler provides a built-in alloca() which we can use;
224 * in all other cases, provide a prototype, mainly to pacify various
225 * incarnations of lint.  On platforms where alloca() is not in libc,
226 * programs which use it will fail to link when compiled with non-GNU
227 * compilers.
228 */
229#if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
230#undef  alloca	/* some GNU bits try to get cute and define this on their own */
231#define alloca(sz) __builtin_alloca(sz)
232#elif defined(lint)
233void	*alloca(size_t);
234#endif
235
236__uint32_t
237	 arc4random(void);
238void	 arc4random_addrandom(unsigned char *, int);
239void	 arc4random_buf(void *, size_t);
240void	 arc4random_stir(void);
241char	*getbsize(int *, long *);
242					/* getcap(3) functions */
243char	*cgetcap(char *, const char *, int);
244int	 cgetclose(void);
245int	 cgetent(char **, char **, const char *);
246int	 cgetfirst(char **, char **);
247int	 cgetmatch(const char *, const char *);
248int	 cgetnext(char **, char **);
249int	 cgetnum(char *, const char *, long *);
250int	 cgetset(const char *);
251int	 cgetstr(char *, const char *, char **);
252int	 cgetustr(char *, const char *, char **);
253
254int	 daemon(int, int);
255char	*devname(__dev_t, __mode_t);
256char 	*devname_r(__dev_t, __mode_t, char *, int);
257int	 getloadavg(double [], int);
258__const char *
259	 getprogname(void);
260
261int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
262int	 l64a_r(long, char *, int);
263int	 mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
264void	 qsort_r(void *, size_t, size_t, void *,
265	    int (*)(void *, const void *, const void *));
266int	 radixsort(const unsigned char **, int, const unsigned char *,
267	    unsigned);
268void    *reallocf(void *, size_t);
269int	 rpmatch(const char *);
270void	 setprogname(const char *);
271int	 sradixsort(const unsigned char **, int, const unsigned char *,
272	    unsigned);
273void	 sranddev(void);
274void	 srandomdev(void);
275long long
276	strtonum(const char *, long long, long long, const char **);
277
278/* Deprecated interfaces, to be removed in FreeBSD 6.0. */
279__int64_t
280	 strtoq(const char *, char **, int);
281__uint64_t
282	 strtouq(const char *, char **, int);
283
284extern char *suboptarg;			/* getsubopt(3) external variable */
285#endif /* __BSD_VISIBLE */
286__END_DECLS
287
288#endif /* !_STDLIB_H_ */
289