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