xref: /freebsd/include/stdlib.h (revision 3642298923e528d795e3a30ec165d2b469e28b40)
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  * $FreeBSD$
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
46 typedef	__rune_t	rune_t;
47 #define	_RUNE_T_DECLARED
48 #endif
49 #endif
50 
51 #ifndef _SIZE_T_DECLARED
52 typedef	__size_t	size_t;
53 #define	_SIZE_T_DECLARED
54 #endif
55 
56 #ifndef	__cplusplus
57 #ifndef _WCHAR_T_DECLARED
58 typedef	__wchar_t	wchar_t;
59 #define	_WCHAR_T_DECLARED
60 #endif
61 #endif
62 
63 typedef struct {
64 	int	quot;		/* quotient */
65 	int	rem;		/* remainder */
66 } div_t;
67 
68 typedef 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 
78 extern int __mb_cur_max;
79 #define	MB_CUR_MAX	__mb_cur_max
80 
81 __BEGIN_DECLS
82 void	 abort(void) __dead2;
83 int	 abs(int) __pure2;
84 int	 atexit(void (*)(void));
85 double	 atof(const char *);
86 int	 atoi(const char *);
87 long	 atol(const char *);
88 void	*bsearch(const void *, const void *, size_t,
89 	    size_t, int (*)(const void *, const void *));
90 void	*calloc(size_t, size_t);
91 div_t	 div(int, int) __pure2;
92 void	 exit(int) __dead2;
93 void	 free(void *);
94 char	*getenv(const char *);
95 long	 labs(long) __pure2;
96 ldiv_t	 ldiv(long, long) __pure2;
97 void	*malloc(size_t);
98 int	 mblen(const char *, size_t);
99 size_t	 mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
100 int	 mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
101 void	 qsort(void *, size_t, size_t,
102 	    int (*)(const void *, const void *));
103 int	 rand(void);
104 void	*realloc(void *, size_t);
105 void	 srand(unsigned);
106 double	 strtod(const char * __restrict, char ** __restrict);
107 float	 strtof(const char * __restrict, char ** __restrict);
108 long	 strtol(const char * __restrict, char ** __restrict, int);
109 long double
110 	 strtold(const char * __restrict, char ** __restrict);
111 unsigned long
112 	 strtoul(const char * __restrict, char ** __restrict, int);
113 int	 system(const char *);
114 int	 wctomb(char *, wchar_t);
115 size_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 */
130 typedef struct {
131 	long long quot;
132 	long long rem;
133 } lldiv_t;
134 
135 /* LONGLONG */
136 long long
137 	 atoll(const char *);
138 /* LONGLONG */
139 long long
140 	 llabs(long long) __pure2;
141 /* LONGLONG */
142 lldiv_t	 lldiv(long long, long long) __pure2;
143 /* LONGLONG */
144 long long
145 	 strtoll(const char * __restrict, char ** __restrict, int);
146 /* LONGLONG */
147 unsigned long long
148 	 strtoull(const char * __restrict, char ** __restrict, int);
149 #endif /* __LONG_LONG_SUPPORTED */
150 
151 void	 _Exit(int) __dead2;
152 #endif /* __ISO_C_VISIBLE >= 1999 */
153 
154 /*
155  * Extensions made by POSIX relative to C.  We don't know yet which edition
156  * of POSIX made these extensions, so assume they've always been there until
157  * research can be done.
158  */
159 #if __POSIX_VISIBLE /* >= ??? */
160 /* int	 posix_memalign(void **, size_t, size_t); (ADV) */
161 int	 rand_r(unsigned *);			/* (TSF) */
162 int	 setenv(const char *, const char *, int);
163 void	 unsetenv(const char *);
164 #endif
165 
166 /*
167  * The only changes to the XSI namespace in revision 6 were the deletion
168  * of the ttyslot() and valloc() functions, which FreeBSD never declared
169  * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
170  * FreeBSD also does not have, and mktemp(), are to be deleted.
171  */
172 #if __XSI_VISIBLE
173 /* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
174 /* long	 a64l(const char *); */
175 double	 drand48(void);
176 /* char	*ecvt(double, int, int * __restrict, int * __restrict); */
177 double	 erand48(unsigned short[3]);
178 /* char	*fcvt(double, int, int * __restrict, int * __restrict); */
179 /* char	*gcvt(double, int, int * __restrict, int * __restrict); */
180 int	 getsubopt(char **, char *const *, char **);
181 int	 grantpt(int);
182 char	*initstate(unsigned long /* XSI requires u_int */, char *, long);
183 long	 jrand48(unsigned short[3]);
184 /* char	*l64a(long); */
185 void	 lcong48(unsigned short[7]);
186 long	 lrand48(void);
187 #ifndef _MKSTEMP_DECLARED
188 int	 mkstemp(char *);
189 #define	_MKSTEMP_DECLARED
190 #endif
191 #ifndef _MKTEMP_DECLARED
192 char	*mktemp(char *);
193 #define	_MKTEMP_DECLARED
194 #endif
195 long	 mrand48(void);
196 long	 nrand48(unsigned short[3]);
197 int	 posix_openpt(int);
198 char	*ptsname(int);
199 int	 putenv(const char *);
200 long	 random(void);
201 char	*realpath(const char *, char resolved_path[]);
202 unsigned short
203 	*seed48(unsigned short[3]);
204 #ifndef _SETKEY_DECLARED
205 int	 setkey(const char *);
206 #define	_SETKEY_DECLARED
207 #endif
208 char	*setstate(/* const */ char *);
209 void	 srand48(long);
210 void	 srandom(unsigned long);
211 int	 unlockpt(int);
212 #endif /* __XSI_VISIBLE */
213 
214 #if __BSD_VISIBLE
215 extern const char *_malloc_options;
216 extern void (*_malloc_message)(const char *, const char *, const char *,
217 	    const char *);
218 
219 /*
220  * The alloca() function can't be implemented in C, and on some
221  * platforms it can't be implemented at all as a callable function.
222  * The GNU C compiler provides a built-in alloca() which we can use;
223  * in all other cases, provide a prototype, mainly to pacify various
224  * incarnations of lint.  On platforms where alloca() is not in libc,
225  * programs which use it will fail to link when compiled with non-GNU
226  * compilers.
227  */
228 #if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
229 #undef  alloca	/* some GNU bits try to get cute and define this on their own */
230 #define alloca(sz) __builtin_alloca(sz)
231 #elif defined(lint)
232 void	*alloca(size_t);
233 #endif
234 
235 __uint32_t
236 	 arc4random(void);
237 void	 arc4random_addrandom(unsigned char *dat, int datlen);
238 void	 arc4random_stir(void);
239 char	*getbsize(int *, long *);
240 					/* getcap(3) functions */
241 char	*cgetcap(char *, const char *, int);
242 int	 cgetclose(void);
243 int	 cgetent(char **, char **, const char *);
244 int	 cgetfirst(char **, char **);
245 int	 cgetmatch(const char *, const char *);
246 int	 cgetnext(char **, char **);
247 int	 cgetnum(char *, const char *, long *);
248 int	 cgetset(const char *);
249 int	 cgetstr(char *, const char *, char **);
250 int	 cgetustr(char *, const char *, char **);
251 
252 int	 daemon(int, int);
253 char	*devname(__dev_t, __mode_t);
254 char 	*devname_r(__dev_t, __mode_t, char *, int);
255 int	 getloadavg(double [], int);
256 __const char *
257 	 getprogname(void);
258 
259 int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
260 int	 mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
261 void	 qsort_r(void *, size_t, size_t, void *,
262 	    int (*)(void *, const void *, const void *));
263 int	 radixsort(const unsigned char **, int, const unsigned char *,
264 	    unsigned);
265 void    *reallocf(void *, size_t);
266 int	 rpmatch(const char *);
267 void	 setprogname(const char *);
268 int	 sradixsort(const unsigned char **, int, const unsigned char *,
269 	    unsigned);
270 void	 sranddev(void);
271 void	 srandomdev(void);
272 
273 /* Deprecated interfaces, to be removed in FreeBSD 6.0. */
274 __int64_t
275 	 strtoq(const char *, char **, int);
276 __uint64_t
277 	 strtouq(const char *, char **, int);
278 
279 extern char *suboptarg;			/* getsubopt(3) external variable */
280 #endif /* __BSD_VISIBLE */
281 __END_DECLS
282 
283 #endif /* !_STDLIB_H_ */
284