include/stdlib.h

   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: src/include/stdlib.h,v 1.67 2008/07/22 11:40:42 ache Exp $
  35  * $DragonFly: src/include/stdlib.h,v 1.22 2008/06/05 17:53:10 swildner Exp $
  36  */
  37
  38 #ifndef _STDLIB_H_
  39 #define _STDLIB_H_
  40
  41 #include <sys/cdefs.h>
  42 #include <sys/_null.h>
  43 #include <sys/types.h>
  44
  45 #ifndef _SIZE_T_DECLARED
  46 typedef __size_t        size_t;
  47 #define _SIZE_T_DECLARED
  48 #endif
  49
  50 #ifndef __cplusplus
  51 #ifndef _WCHAR_T_DECLARED
  52 typedef __wchar_t       wchar_t;
  53 #define _WCHAR_T_DECLARED
  54 #endif
  55 #endif
  56
  57 typedef struct {
  58         int     quot;           /* quotient */
  59         int     rem;            /* remainder */
  60 } div_t;
  61
  62 typedef struct {
  63         long    quot;
  64         long    rem;
  65 } ldiv_t;
  66
  67 #define EXIT_FAILURE    1
  68 #define EXIT_SUCCESS    0
  69
  70 #define RAND_MAX        0x7fffffff
  71
  72 extern int __mb_cur_max;
  73 #define MB_CUR_MAX      __mb_cur_max
  74
  75 __BEGIN_DECLS
  76 void     abort(void) __dead2;
  77 /* void  abort2(const char *, int, void **) __dead2; */
  78 #if !defined(_KERNEL_VIRTUAL)
  79 int      abs(int) __pure2;
  80 #endif
  81 int      atexit(void (*)(void));
  82 double   atof(const char *);
  83 int      atoi(const char *);
  84 long     atol(const char *);
  85 void    *bsearch(const void *, const void *, size_t,
  86                  size_t, int (*)(const void *, const void *));
  87 void    *calloc(size_t, size_t);
  88 div_t    div(int, int) __pure2;
  89 void     exit(int) __dead2;
  90 void     free(void *);
  91 char    *getenv(const char *);
  92 #if !defined(_KERNEL_VIRTUAL)
  93 long     labs(long) __pure2;
  94 #endif
  95 ldiv_t   ldiv(long, long) __pure2;
  96 void    *malloc(size_t);
  97 int      posix_memalign(void **, size_t, 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, int (*)(const void *, const void *));
 102 int      rand(void);
 103 void    *realloc(void *, size_t);
 104 void     srand(unsigned);
 105 double   strtod(const char * __restrict, char ** __restrict);
 106 float    strtof(const char * __restrict, char ** __restrict);
 107 #if !defined(_KERNEL_VIRTUAL)
 108 long     strtol(const char * __restrict, char ** __restrict, int);
 109 #endif
 110 long double
 111          strtold(const char * __restrict, char ** __restrict);
 112 #if !defined(_KERNEL_VIRTUAL)
 113 unsigned long
 114          strtoul(const char * __restrict, char ** __restrict, int);
 115 #endif
 116 int      system(const char *);
 117 int      wctomb(char *, wchar_t);
 118 size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
 119
 120 /*
 121  * Functions added in C99 which we make conditionally available in the
 122  * BSD^C89 namespace if the compiler supports `long long'.
 123  * The #if test is more complicated than it ought to be because
 124  * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long'
 125  * is not supported in the compilation environment (which therefore means
 126  * that it can't really be ISO C99).
 127  *
 128  * (The only other extension made by C99 in this header is _Exit().)
 129  */
 130 #if __ISO_C_VISIBLE >= 1999
 131 #ifdef __LONG_LONG_SUPPORTED
 132 /* LONGLONG */
 133 typedef struct {
 134         long long quot;
 135         long long rem;
 136 } lldiv_t;
 137
 138 /* LONGLONG */
 139 long long
 140          atoll(const char *);
 141 /* LONGLONG */
 142 long long
 143          llabs(long long) __pure2;
 144 /* LONGLONG */
 145 lldiv_t  lldiv(long long, long long) __pure2;
 146 /* LONGLONG */
 147 long long
 148          strtoll(const char * __restrict, char ** __restrict, int);
 149 /* LONGLONG */
 150 unsigned long long
 151          strtoull(const char * __restrict, char ** __restrict, int);
 152 #endif /* __LONG_LONG_SUPPORTED */
 153
 154 void     _Exit(int) __dead2;
 155 #endif /* __ISO_C_VISIBLE >= 1999 */
 156
 157 /*
 158  * Extensions made by POSIX relative to C.  We don't know yet which edition
 159  * of POSIX made these extensions, so assume they've always been there until
 160  * research can be done.
 161  */
 162 #if __POSIX_VISIBLE /* >= ??? */
 163 /*int    posix_memalign(void **, size_t, size_t); (ADV) */
 164 int      rand_r(unsigned *);                    /* (TSF) */
 165 int      setenv(const char *, const char *, int);
 166 int      unsetenv(const char *);
 167 #endif
 168
 169 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
 170 #ifndef _MKDTEMP_DECLARED
 171 char    *mkdtemp(char *);
 172 #define _MKDTEMP_DECLARED
 173 #endif
 174 #ifndef _MKSTEMP_DECLARED
 175 int      mkstemp(char *);
 176 #define _MKSTEMP_DECLARED
 177 #endif
 178 #endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
 179
 180 /*
 181  * The only changes to the XSI namespace in revision 6 were the deletion
 182  * of the ttyslot() and valloc() functions, which we never declared
 183  * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
 184  * we also do not have, and mktemp(), are to be deleted.
 185  */
 186 #if __XSI_VISIBLE
 187 /* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
 188 long     a64l(const char *);
 189 double   drand48(void);
 190 /* char *ecvt(double, int, int * __restrict, int * __restrict); */
 191 double   erand48(unsigned short[3]);
 192 /* char *fcvt(double, int, int * __restrict, int * __restrict); */
 193 /* char *gcvt(double, int, int * __restrict, int * __restrict); */
 194 int      getsubopt(char **, char *const *, char **);
 195 int      grantpt(int);
 196 char    *initstate(unsigned long /* XSI requires u_int */, char *, long);
 197 long     jrand48(unsigned short[3]);
 198 char    *l64a(long);
 199 void     lcong48(unsigned short[7]);
 200 long     lrand48(void);
 201 #if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
 202 char    *mktemp(char *);
 203 #define _MKTEMP_DECLARED
 204 #endif
 205 long     mrand48(void);
 206 long     nrand48(unsigned short[3]);
 207 int      posix_openpt(int);
 208 char    *ptsname(int);
 209 int      putenv(char *);
 210 long     random(void);
 211 char    *realpath(const char *, char resolved_path[]);
 212 unsigned short
 213         *seed48(unsigned short[3]);
 214 int      setkey(const char *);
 215 char    *setstate(/* const */ char *);
 216 void     srand48(long);
 217 void     srandom(unsigned long);
 218 int      unlockpt(int);
 219 #endif /* __XSI_VISIBLE */
 220
 221 #if __BSD_VISIBLE
 222 /* extern const char *_malloc_options;
 223 extern void (*_malloc_message)(const char *, const char *, const char *,
 224             const char *); */
 225
 226 /*
 227  * The alloca() function can't be implemented in C, and on some
 228  * platforms it can't be implemented at all as a callable function.
 229  * The GNU C compiler provides a built-in alloca() which we can use;
 230  * in all other cases, provide a prototype, mainly to pacify various
 231  * incarnations of lint.  On platforms where alloca() is not in libc,
 232  * programs which use it will fail to link when compiled with non-GNU
 233  * compilers.
 234  */
 235 #if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
 236 #undef  alloca  /* some GNU bits try to get cute and define this on their own */
 237 #define alloca(sz) __builtin_alloca(sz)
 238 #elif defined(lint)
 239 void    *alloca(size_t);
 240 #endif
 241
 242 __uint32_t
 243          arc4random(void);
 244 void     arc4random_addrandom(__uint8_t *, size_t);
 245 void     arc4random_buf(void *, size_t);
 246 void     arc4random_stir(void);
 247 __uint32_t
 248          arc4random_uniform(__uint32_t);
 249 char    *getbsize(int *, long *);
 250
 251 /* getcap(3) functions */
 252 char    *cgetcap(char *, const char *, int);
 253 int      cgetclose(void);
 254 int      cgetent(char **, char **, const char *);
 255 int      cgetfirst(char **, char **);
 256 int      cgetmatch(const char *, const char *);
 257 int      cgetnext(char **, char **);
 258 int      cgetnum(char *, const char *, long *);
 259 int      cgetset(const char *);
 260 int      cgetstr(char *, const char *, char **);
 261 int      cgetustr(char *, const char *, char **);
 262
 263 int      daemon(int, int);
 264 char    *devname(dev_t, mode_t);
 265 char    *devname_r(dev_t, mode_t, char *, size_t);
 266 char    *fdevname(int);
 267 int      fdevname_r(int, char *, size_t);
 268 int      getloadavg(double [], int);
 269 __const char *
 270          getprogname(void);
 271
 272 int      heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
 273 int      l64a_r(long, char *, int);
 274 int      mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
 275 void     qsort_r(void *, size_t, size_t, void *,
 276                  int (*)(void *, const void *, const void *));
 277 int      radixsort(const unsigned char **, int, const unsigned char *,
 278                    unsigned int);
 279 void    *reallocf(void *, size_t);
 280 int      rpmatch(const char *);
 281 void     setprogname(const char *);
 282 int      sradixsort(const unsigned char **, int, const unsigned char *,
 283                     unsigned int);
 284 void     sranddev(void);
 285 void     srandomdev(void);
 286 long long
 287          strtonum(const char *, long long, long long, const char **);
 288
 289 /* Deprecated interfaces. */
 290 #if !defined(_KERNEL_VIRTUAL)
 291 __int64_t
 292          strtoq(const char *, char **, int);
 293 __uint64_t
 294          strtouq(const char *, char **, int);
 295 #endif
 296
 297 extern char *suboptarg;                 /* getsubopt(3) external variable */
 298 #endif /* __BSD_VISIBLE */
 299 __END_DECLS
 300
 301 #endif /* !_STDLIB_H_ */