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. 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  * $FreeBSD$
  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
  42 typedef __rune_t        rune_t;
  43 #define _RUNE_T_DECLARED
  44 #endif
  45 #endif
  46
  47 #ifndef _SIZE_T_DECLARED
  48 typedef __size_t        size_t;
  49 #define _SIZE_T_DECLARED
  50 #endif
  51
  52 #ifndef __cplusplus
  53 #ifndef _WCHAR_T_DECLARED
  54 typedef ___wchar_t      wchar_t;
  55 #define _WCHAR_T_DECLARED
  56 #endif
  57 #endif
  58
  59 typedef struct {
  60         int     quot;           /* quotient */
  61         int     rem;            /* remainder */
  62 } div_t;
  63
  64 typedef 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        0x7ffffffd
  73
  74 __BEGIN_DECLS
  75 #ifdef _XLOCALE_H_
  76 #include <xlocale/_stdlib.h>
  77 #endif
  78 extern int __mb_cur_max;
  79 extern int ___mb_cur_max(void);
  80 #define MB_CUR_MAX      (___mb_cur_max())
  81
  82 _Noreturn void   abort(void);
  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) __malloc_like __result_use_check
  91              __alloc_size(1) __alloc_size(2);
  92 div_t    div(int, int) __pure2;
  93 _Noreturn void   exit(int);
  94 void     free(void *);
  95 char    *getenv(const char *);
  96 long     labs(long) __pure2;
  97 ldiv_t   ldiv(long, long) __pure2;
  98 void    *malloc(size_t) __malloc_like __result_use_check __alloc_size(1);
  99 int      mblen(const char *, size_t);
 100 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
 101 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
 102 void     qsort(void *, size_t, size_t,
 103             int (*)(const void *, const void *));
 104 int      rand(void);
 105 void    *realloc(void *, size_t) __result_use_check __alloc_size(2);
 106 void     srand(unsigned);
 107 double   strtod(const char * __restrict, char ** __restrict);
 108 float    strtof(const char * __restrict, char ** __restrict);
 109 long     strtol(const char * __restrict, char ** __restrict, int);
 110 long double
 111          strtold(const char * __restrict, char ** __restrict);
 112 unsigned long
 113          strtoul(const char * __restrict, char ** __restrict, int);
 114 int      system(const char *);
 115 int      wctomb(char *, wchar_t);
 116 size_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 || defined(__cplusplus)
 129 #ifdef __LONG_LONG_SUPPORTED
 130 /* LONGLONG */
 131 typedef struct {
 132         long long quot;
 133         long long rem;
 134 } lldiv_t;
 135
 136 /* LONGLONG */
 137 long long
 138          atoll(const char *);
 139 /* LONGLONG */
 140 long long
 141          llabs(long long) __pure2;
 142 /* LONGLONG */
 143 lldiv_t  lldiv(long long, long long) __pure2;
 144 /* LONGLONG */
 145 long long
 146          strtoll(const char * __restrict, char ** __restrict, int);
 147 /* LONGLONG */
 148 unsigned long long
 149          strtoull(const char * __restrict, char ** __restrict, int);
 150 #endif /* __LONG_LONG_SUPPORTED */
 151
 152 _Noreturn void   _Exit(int);
 153 #endif /* __ISO_C_VISIBLE >= 1999 */
 154
 155 /*
 156  * If we're in a mode greater than C99, expose C11 functions.
 157  */
 158 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
 159 void *  aligned_alloc(size_t, size_t) __malloc_like __alloc_align(1)
 160             __alloc_size(2);
 161 int     at_quick_exit(void (*)(void));
 162 _Noreturn void
 163         quick_exit(int);
 164 #endif /* __ISO_C_VISIBLE >= 2011 */
 165 /*
 166  * Extensions made by POSIX relative to C.
 167  */
 168 #if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE
 169 char    *realpath(const char * __restrict, char * __restrict);
 170 #endif
 171 #if __POSIX_VISIBLE >= 199506
 172 int      rand_r(unsigned *);                    /* (TSF) */
 173 #endif
 174 #if __POSIX_VISIBLE >= 200112
 175 int      posix_memalign(void **, size_t, size_t) __nonnull(1); /* (ADV) */
 176 int      setenv(const char *, const char *, int);
 177 int      unsetenv(const char *);
 178 #endif
 179
 180 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
 181 int      getsubopt(char **, char *const *, char **);
 182 #ifndef _MKDTEMP_DECLARED
 183 char    *mkdtemp(char *);
 184 #define _MKDTEMP_DECLARED
 185 #endif
 186 #ifndef _MKSTEMP_DECLARED
 187 int      mkstemp(char *);
 188 #define _MKSTEMP_DECLARED
 189 #endif
 190 #endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
 191
 192 /*
 193  * The only changes to the XSI namespace in revision 6 were the deletion
 194  * of the ttyslot() and valloc() functions, which FreeBSD never declared
 195  * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
 196  * FreeBSD also does not have, and mktemp(), are to be deleted.
 197  */
 198 #if __XSI_VISIBLE
 199 /* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
 200 long     a64l(const char *);
 201 double   drand48(void);
 202 /* char *ecvt(double, int, int * __restrict, int * __restrict); */
 203 double   erand48(unsigned short[3]);
 204 /* char *fcvt(double, int, int * __restrict, int * __restrict); */
 205 /* char *gcvt(double, int, int * __restrict, int * __restrict); */
 206 int      grantpt(int);
 207 char    *initstate(unsigned int, char *, size_t);
 208 long     jrand48(unsigned short[3]);
 209 char    *l64a(long);
 210 void     lcong48(unsigned short[7]);
 211 long     lrand48(void);
 212 #if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
 213 char    *mktemp(char *);
 214 #define _MKTEMP_DECLARED
 215 #endif
 216 long     mrand48(void);
 217 long     nrand48(unsigned short[3]);
 218 int      posix_openpt(int);
 219 char    *ptsname(int);
 220 int      putenv(char *);
 221 long     random(void);
 222 unsigned short
 223         *seed48(unsigned short[3]);
 224 #ifndef _SETKEY_DECLARED
 225 int      setkey(const char *);
 226 #define _SETKEY_DECLARED
 227 #endif
 228 char    *setstate(/* const */ char *);
 229 void     srand48(long);
 230 void     srandom(unsigned int);
 231 int      unlockpt(int);
 232 #endif /* __XSI_VISIBLE */
 233
 234 #if __BSD_VISIBLE
 235 extern const char *malloc_conf;
 236 extern void (*malloc_message)(void *, const char *);
 237
 238 /*
 239  * The alloca() function can't be implemented in C, and on some
 240  * platforms it can't be implemented at all as a callable function.
 241  * The GNU C compiler provides a built-in alloca() which we can use;
 242  * in all other cases, provide a prototype, mainly to pacify various
 243  * incarnations of lint.  On platforms where alloca() is not in libc,
 244  * programs which use it will fail to link when compiled with non-GNU
 245  * compilers.
 246  */
 247 #if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
 248 #undef  alloca  /* some GNU bits try to get cute and define this on their own */
 249 #define alloca(sz) __builtin_alloca(sz)
 250 #elif defined(lint)
 251 void    *alloca(size_t);
 252 #endif
 253
 254 void     abort2(const char *, int, void **) __dead2;
 255 __uint32_t
 256          arc4random(void);
 257 void     arc4random_addrandom(unsigned char *, int);
 258 void     arc4random_buf(void *, size_t);
 259 void     arc4random_stir(void);
 260 __uint32_t
 261          arc4random_uniform(__uint32_t);
 262 #ifdef __BLOCKS__
 263 int      atexit_b(void (^)(void));
 264 void    *bsearch_b(const void *, const void *, size_t,
 265             size_t, int (^)(const void *, const void *));
 266 #endif
 267 char    *getbsize(int *, long *);
 268                                         /* getcap(3) functions */
 269 char    *cgetcap(char *, const char *, int);
 270 int      cgetclose(void);
 271 int      cgetent(char **, char **, const char *);
 272 int      cgetfirst(char **, char **);
 273 int      cgetmatch(const char *, const char *);
 274 int      cgetnext(char **, char **);
 275 int      cgetnum(char *, const char *, long *);
 276 int      cgetset(const char *);
 277 int      cgetstr(char *, const char *, char **);
 278 int      cgetustr(char *, const char *, char **);
 279
 280 int      daemon(int, int);
 281 char    *devname(__dev_t, __mode_t);
 282 char    *devname_r(__dev_t, __mode_t, char *, int);
 283 char    *fdevname(int);
 284 char    *fdevname_r(int, char *, int);
 285 int      getloadavg(double [], int);
 286 const char *
 287          getprogname(void);
 288
 289 int      heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
 290 #ifdef __BLOCKS__
 291 int      heapsort_b(void *, size_t, size_t, int (^)(const void *, const void *));
 292 void     qsort_b(void *, size_t, size_t,
 293             int (^)(const void *, const void *));
 294 #endif
 295 int      l64a_r(long, char *, int);
 296 int      mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
 297 #ifdef __BLOCKS__
 298 int      mergesort_b(void *, size_t, size_t, int (^)(const void *, const void *));
 299 #endif
 300 int      mkostemp(char *, int);
 301 int      mkostemps(char *, int, int);
 302 void     qsort_r(void *, size_t, size_t, void *,
 303             int (*)(void *, const void *, const void *));
 304 int      radixsort(const unsigned char **, int, const unsigned char *,
 305             unsigned);
 306 void    *reallocarray(void *, size_t, size_t) __result_use_check __alloc_size(2)
 307             __alloc_size(3);
 308 void    *reallocf(void *, size_t) __alloc_size(2);
 309 int      rpmatch(const char *);
 310 void     setprogname(const char *);
 311 int      sradixsort(const unsigned char **, int, const unsigned char *,
 312             unsigned);
 313 void     sranddev(void);
 314 void     srandomdev(void);
 315 long long
 316         strtonum(const char *, long long, long long, const char **);
 317
 318 /* Deprecated interfaces, to be removed in FreeBSD 6.0. */
 319 __int64_t
 320          strtoq(const char *, char **, int);
 321 __uint64_t
 322          strtouq(const char *, char **, int);
 323
 324 extern char *suboptarg;                 /* getsubopt(3) external variable */
 325 #endif /* __BSD_VISIBLE */
 326 __END_DECLS
 327
 328 #endif /* !_STDLIB_H_ */