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  */
  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 #ifndef _SIZE_T_DECLARED
  45 typedef __size_t        size_t;
  46 #define _SIZE_T_DECLARED
  47 #endif
  48
  49 #ifndef __cplusplus
  50 #ifndef _WCHAR_T_DECLARED
  51 typedef __wchar_t       wchar_t;
  52 #define _WCHAR_T_DECLARED
  53 #endif
  54 #endif
  55
  56 typedef struct {
  57         int     quot;           /* quotient */
  58         int     rem;            /* remainder */
  59 } div_t;
  60
  61 typedef struct {
  62         long    quot;
  63         long    rem;
  64 } ldiv_t;
  65
  66 #define EXIT_FAILURE    1
  67 #define EXIT_SUCCESS    0
  68
  69 #define RAND_MAX        0x7fffffff
  70
  71 extern int __mb_cur_max;
  72 #define MB_CUR_MAX      __mb_cur_max
  73
  74 __BEGIN_DECLS
  75 void     abort(void) __dead2;
  76 /* void  abort2(const char *, int, void **) __dead2; */
  77 #if !defined(_KERNEL_VIRTUAL)
  78 int      abs(int) __pure2;
  79 #endif
  80 int      atexit(void (*)(void));
  81 double   atof(const char *);
  82 int      atoi(const char *);
  83 long     atol(const char *);
  84 void    *bsearch(const void *, const void *, size_t,
  85                  size_t, int (*)(const void *, const void *));
  86 void    *calloc(size_t, size_t);
  87 div_t    div(int, int) __pure2;
  88 void     exit(int) __dead2;
  89 void     free(void *);
  90 char    *getenv(const char *);
  91 #if !defined(_KERNEL_VIRTUAL)
  92 long     labs(long) __pure2;
  93 #endif
  94 ldiv_t   ldiv(long, long) __pure2;
  95 void    *malloc(size_t);
  96 int      posix_memalign(void **, size_t, size_t);
  97 int      mblen(const char *, size_t);
  98 size_t   mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
  99 int      mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
 100 void     qsort(void *, size_t, size_t, int (*)(const void *, const void *));
 101 int      rand(void);
 102 void    *realloc(void *, size_t);
 103 void     srand(unsigned);
 104 double   strtod(const char * __restrict, char ** __restrict);
 105 float    strtof(const char * __restrict, char ** __restrict);
 106 #if !defined(_KERNEL_VIRTUAL)
 107 long     strtol(const char * __restrict, char ** __restrict, int);
 108 #endif
 109 long double
 110          strtold(const char * __restrict, char ** __restrict);
 111 #if !defined(_KERNEL_VIRTUAL)
 112 unsigned long
 113          strtoul(const char * __restrict, char ** __restrict, int);
 114 #endif
 115 int      system(const char *);
 116 int      wctomb(char *, wchar_t);
 117 size_t   wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
 118
 119 /*
 120  * Functions added in C99 which we make conditionally available in the
 121  * BSD^C89 namespace if the compiler supports `long long'.
 122  * The #if test is more complicated than it ought to be because
 123  * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long'
 124  * is not supported in the compilation environment (which therefore means
 125  * that it can't really be ISO C99).
 126  *
 127  * (The only other extension made by C99 in this header is _Exit().)
 128  */
 129 #if __ISO_C_VISIBLE >= 1999
 130 #ifdef __LONG_LONG_SUPPORTED
 131 /* LONGLONG */
 132 typedef struct {
 133         long long quot;
 134         long long rem;
 135 } lldiv_t;
 136
 137 /* LONGLONG */
 138 long long
 139          atoll(const char *);
 140 /* LONGLONG */
 141 long long
 142          llabs(long long) __pure2;
 143 /* LONGLONG */
 144 lldiv_t  lldiv(long long, long long) __pure2;
 145 /* LONGLONG */
 146 long long
 147          strtoll(const char * __restrict, char ** __restrict, int);
 148 /* LONGLONG */
 149 unsigned long long
 150          strtoull(const char * __restrict, char ** __restrict, int);
 151 #endif /* __LONG_LONG_SUPPORTED */
 152
 153 void     _Exit(int) __dead2;
 154 #endif /* __ISO_C_VISIBLE >= 1999 */
 155
 156 /*
 157  * Extensions made by POSIX relative to C.  We don't know yet which edition
 158  * of POSIX made these extensions, so assume they've always been there until
 159  * research can be done.
 160  */
 161 #if __POSIX_VISIBLE /* >= ??? */
 162 /*int    posix_memalign(void **, size_t, size_t); (ADV) */
 163 int      rand_r(unsigned *);                    /* (TSF) */
 164 int      setenv(const char *, const char *, int);
 165 int      unsetenv(const char *);
 166 #endif
 167
 168 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
 169 #ifndef _MKDTEMP_DECLARED
 170 char    *mkdtemp(char *);
 171 #define _MKDTEMP_DECLARED
 172 #endif
 173 #ifndef _MKSTEMP_DECLARED
 174 int      mkstemp(char *);
 175 #define _MKSTEMP_DECLARED
 176 #endif
 177 #endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */
 178
 179 /*
 180  * The only changes to the XSI namespace in revision 6 were the deletion
 181  * of the ttyslot() and valloc() functions, which we never declared
 182  * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
 183  * we also do not have, and mktemp(), are to be deleted.
 184  */
 185 #if __XSI_VISIBLE
 186 /* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
 187 long     a64l(const char *);
 188 double   drand48(void);
 189 /* char *ecvt(double, int, int * __restrict, int * __restrict); */
 190 double   erand48(unsigned short[3]);
 191 /* char *fcvt(double, int, int * __restrict, int * __restrict); */
 192 /* char *gcvt(double, int, int * __restrict, int * __restrict); */
 193 int      getsubopt(char **, char *const *, char **);
 194 int      grantpt(int);
 195 char    *initstate(unsigned long /* XSI requires u_int */, char *, long);
 196 long     jrand48(unsigned short[3]);
 197 char    *l64a(long);
 198 void     lcong48(unsigned short[7]);
 199 long     lrand48(void);
 200 #if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
 201 char    *mktemp(char *);
 202 #define _MKTEMP_DECLARED
 203 #endif
 204 long     mrand48(void);
 205 long     nrand48(unsigned short[3]);
 206 int      posix_openpt(int);
 207 char    *ptsname(int);
 208 int      putenv(char *);
 209 long     random(void);
 210 char    *realpath(const char * __restrict, char * __restrict);
 211 unsigned short
 212         *seed48(unsigned short[3]);
 213 int      setkey(const char *);
 214 char    *setstate(/* const */ char *);
 215 void     srand48(long);
 216 void     srandom(unsigned long);
 217 int      unlockpt(int);
 218 #endif /* __XSI_VISIBLE */
 219
 220 #if __BSD_VISIBLE
 221 /* extern const char *_malloc_options;
 222 extern void (*_malloc_message)(const char *, const char *, const char *,
 223             const char *); */
 224
 225 /*
 226  * The alloca() function can't be implemented in C, and on some
 227  * platforms it can't be implemented at all as a callable function.
 228  * The GNU C compiler provides a built-in alloca() which we can use;
 229  * in all other cases, provide a prototype, mainly to pacify various
 230  * incarnations of lint.  On platforms where alloca() is not in libc,
 231  * programs which use it will fail to link when compiled with non-GNU
 232  * compilers.
 233  */
 234 #if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
 235 #undef  alloca  /* some GNU bits try to get cute and define this on their own */
 236 #define alloca(sz) __builtin_alloca(sz)
 237 #elif defined(lint)
 238 void    *alloca(size_t);
 239 #endif
 240
 241 __uint32_t
 242          arc4random(void);
 243 void     arc4random_addrandom(__uint8_t *, size_t);
 244 void     arc4random_buf(void *, size_t);
 245 void     arc4random_stir(void);
 246 __uint32_t
 247          arc4random_uniform(__uint32_t);
 248 char    *getbsize(int *, long *);
 249
 250 /* getcap(3) functions */
 251 char    *cgetcap(char *, const char *, int);
 252 int      cgetclose(void);
 253 int      cgetent(char **, char **, const char *);
 254 int      cgetfirst(char **, char **);
 255 int      cgetmatch(const char *, const char *);
 256 int      cgetnext(char **, char **);
 257 int      cgetnum(char *, const char *, long *);
 258 int      cgetset(const char *);
 259 int      cgetstr(char *, const char *, char **);
 260 int      cgetustr(char *, const char *, char **);
 261
 262 int      daemon(int, int);
 263 char    *devname(dev_t, mode_t);
 264 char    *devname_r(dev_t, mode_t, char *, size_t);
 265 char    *fdevname(int);
 266 int      fdevname_r(int, char *, size_t);
 267 int      getloadavg(double [], int);
 268 const char *
 269          getprogname(void);
 270
 271 int      heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
 272 int      l64a_r(long, char *, int);
 273 int      mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
 274 void     qsort_r(void *, size_t, size_t, void *,
 275                  int (*)(void *, const void *, const void *));
 276 int      radixsort(const unsigned char **, int, const unsigned char *,
 277                    unsigned int);
 278 void    *reallocf(void *, size_t);
 279 int      rpmatch(const char *);
 280 void     setprogname(const char *);
 281 int      sradixsort(const unsigned char **, int, const unsigned char *,
 282                     unsigned int);
 283 void     sranddev(void);
 284 void     srandomdev(void);
 285 long long
 286          strtonum(const char *, long long, long long, const char **);
 287
 288 /* Deprecated interfaces. */
 289 #if !defined(_KERNEL_VIRTUAL)
 290 __int64_t
 291          strtoq(const char *, char **, int);
 292 __uint64_t
 293          strtouq(const char *, char **, int);
 294 #endif
 295
 296 extern char *suboptarg;                 /* getsubopt(3) external variable */
 297 #endif /* __BSD_VISIBLE */
 298
 299 /*
 300  * C11 functions.
 301  */
 302 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L || __BSD_VISIBLE
 303 int     at_quick_exit(void (*func)(void));
 304 void    quick_exit(int) __dead2;
 305 void    *aligned_alloc(size_t, size_t);
 306 #endif /* __ISO_C_VISIBLE >= 2011 */
 307
 308 __END_DECLS
 309
 310 #endif /* !_STDLIB_H_ */