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  * $FreeBSD$
  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 void     abort2(const char *, int, void **) __dead2;
  84 int      abs(int) __pure2;
  85 int      atexit(void (*)(void));
  86 double   atof(const char *);
  87 int      atoi(const char *);
  88 long     atol(const char *);
  89 void    *bsearch(const void *, const void *, size_t,
  90             size_t, int (*)(const void *, const void *));
  91 void    *calloc(size_t, size_t);
  92 div_t    div(int, int) __pure2;
  93 void     exit(int) __dead2;
  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);
  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);
 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
 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 void     _Exit(int) __dead2;
 153 #endif /* __ISO_C_VISIBLE >= 1999 */
 154
 155 /*
 156  * Extensions made by POSIX relative to C.  We don't know yet which edition
 157  * of POSIX made these extensions, so assume they've always been there until
 158  * research can be done.
 159  */
 160 #if __POSIX_VISIBLE /* >= ??? */
 161 int      posix_memalign(void **, size_t, size_t); /* (ADV) */
 162 int      rand_r(unsigned *);                    /* (TSF) */
 163 int      setenv(const char *, const char *, int);
 164 int      unsetenv(const char *);
 165 #endif
 166
 167 /*
 168  * The only changes to the XSI namespace in revision 6 were the deletion
 169  * of the ttyslot() and valloc() functions, which FreeBSD never declared
 170  * in this header.  For revision 7, ecvt(), fcvt(), and gcvt(), which
 171  * FreeBSD also does not have, and mktemp(), are to be deleted.
 172  */
 173 #if __XSI_VISIBLE
 174 /* XXX XSI requires pollution from <sys/wait.h> here.  We'd rather not. */
 175 long     a64l(const char *);
 176 double   drand48(void);
 177 /* char *ecvt(double, int, int * __restrict, int * __restrict); */
 178 double   erand48(unsigned short[3]);
 179 /* char *fcvt(double, int, int * __restrict, int * __restrict); */
 180 /* char *gcvt(double, int, int * __restrict, int * __restrict); */
 181 int      getsubopt(char **, char *const *, char **);
 182 int      grantpt(int);
 183 char    *initstate(unsigned long /* XSI requires u_int */, char *, long);
 184 long     jrand48(unsigned short[3]);
 185 char    *l64a(long);
 186 void     lcong48(unsigned short[7]);
 187 long     lrand48(void);
 188 #ifndef _MKSTEMP_DECLARED
 189 int      mkstemp(char *);
 190 #define _MKSTEMP_DECLARED
 191 #endif
 192 #ifndef _MKTEMP_DECLARED
 193 char    *mktemp(char *);
 194 #define _MKTEMP_DECLARED
 195 #endif
 196 long     mrand48(void);
 197 long     nrand48(unsigned short[3]);
 198 int      posix_openpt(int);
 199 char    *ptsname(int);
 200 int      putenv(char *);
 201 long     random(void);
 202 char    *realpath(const char *, char resolved_path[]);
 203 unsigned short
 204         *seed48(unsigned short[3]);
 205 #ifndef _SETKEY_DECLARED
 206 int      setkey(const char *);
 207 #define _SETKEY_DECLARED
 208 #endif
 209 char    *setstate(/* const */ char *);
 210 void     srand48(long);
 211 void     srandom(unsigned long);
 212 int      unlockpt(int);
 213 #endif /* __XSI_VISIBLE */
 214
 215 #if __BSD_VISIBLE
 216 extern const char *_malloc_options;
 217 extern void (*_malloc_message)(const char *, const char *, const char *,
 218             const char *);
 219
 220 /*
 221  * The alloca() function can't be implemented in C, and on some
 222  * platforms it can't be implemented at all as a callable function.
 223  * The GNU C compiler provides a built-in alloca() which we can use;
 224  * in all other cases, provide a prototype, mainly to pacify various
 225  * incarnations of lint.  On platforms where alloca() is not in libc,
 226  * programs which use it will fail to link when compiled with non-GNU
 227  * compilers.
 228  */
 229 #if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
 230 #undef  alloca  /* some GNU bits try to get cute and define this on their own */
 231 #define alloca(sz) __builtin_alloca(sz)
 232 #elif defined(lint)
 233 void    *alloca(size_t);
 234 #endif
 235
 236 __uint32_t
 237          arc4random(void);
 238 void     arc4random_addrandom(unsigned char *, int);
 239 void     arc4random_buf(void *, size_t);
 240 void     arc4random_stir(void);
 241 __uint32_t
 242          arc4random_uniform(__uint32_t);
 243 char    *getbsize(int *, long *);
 244                                         /* getcap(3) functions */
 245 char    *cgetcap(char *, const char *, int);
 246 int      cgetclose(void);
 247 int      cgetent(char **, char **, const char *);
 248 int      cgetfirst(char **, char **);
 249 int      cgetmatch(const char *, const char *);
 250 int      cgetnext(char **, char **);
 251 int      cgetnum(char *, const char *, long *);
 252 int      cgetset(const char *);
 253 int      cgetstr(char *, const char *, char **);
 254 int      cgetustr(char *, const char *, char **);
 255
 256 int      daemon(int, int);
 257 char    *devname(__dev_t, __mode_t);
 258 char    *devname_r(__dev_t, __mode_t, char *, int);
 259 int      getloadavg(double [], int);
 260 __const char *
 261          getprogname(void);
 262
 263 int      heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
 264 int      l64a_r(long, char *, int);
 265 int      mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
 266 void     qsort_r(void *, size_t, size_t, void *,
 267             int (*)(void *, const void *, const void *));
 268 int      radixsort(const unsigned char **, int, const unsigned char *,
 269             unsigned);
 270 void    *reallocf(void *, size_t);
 271 int      rpmatch(const char *);
 272 void     setprogname(const char *);
 273 int      sradixsort(const unsigned char **, int, const unsigned char *,
 274             unsigned);
 275 void     sranddev(void);
 276 void     srandomdev(void);
 277 long long
 278         strtonum(const char *, long long, long long, const char **);
 279
 280 /* Deprecated interfaces, to be removed in FreeBSD 6.0. */
 281 __int64_t
 282          strtoq(const char *, char **, int);
 283 __uint64_t
 284          strtouq(const char *, char **, int);
 285
 286 extern char *suboptarg;                 /* getsubopt(3) external variable */
 287 #endif /* __BSD_VISIBLE */
 288 __END_DECLS
 289
 290 #endif /* !_STDLIB_H_ */