release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/sysroot/usr/include/stdlib.h

   1 /* Copyright (C) 1991-2007, 2009 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /*
  20  *      ISO C99 Standard: 7.20 General utilities        <stdlib.h>
  21  */
  22
  23 #ifndef _STDLIB_H
  24
  25 #include <features.h>
  26
  27 /* Get size_t, wchar_t and NULL from <stddef.h>.  */
  28 #define         __need_size_t
  29 #ifndef __need_malloc_and_calloc
  30 # ifdef __UCLIBC_HAS_WCHAR__
  31 #  define       __need_wchar_t
  32 # endif
  33 # define        __need_NULL
  34 #endif
  35 #include <stddef.h>
  36
  37 __BEGIN_DECLS
  38
  39 #ifndef __need_malloc_and_calloc
  40 #define _STDLIB_H       1
  41
  42 #if defined __USE_XOPEN && !defined _SYS_WAIT_H
  43 /* XPG requires a few symbols from <sys/wait.h> being defined.  */
  44 # include <bits/waitflags.h>
  45 # include <bits/waitstatus.h>
  46
  47 # ifdef __USE_BSD
  48
  49 /* Lots of hair to allow traditional BSD use of `union wait'
  50    as well as POSIX.1 use of `int' for the status word.  */
  51
  52 #  if defined __GNUC__ && !defined __cplusplus
  53 #   define __WAIT_INT(status) \
  54   (__extension__ (((union { __typeof(status) __in; int __i; }) \
  55                    { .__in = (status) }).__i))
  56 #  else
  57 #   define __WAIT_INT(status)   (*(int *) &(status))
  58 #  endif
  59
  60 /* This is the type of the argument to `wait'.  The funky union
  61    causes redeclarations with either `int *' or `union wait *' to be
  62    allowed without complaint.  __WAIT_STATUS_DEFN is the type used in
  63    the actual function definitions.  */
  64
  65 #  if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus
  66 #   define __WAIT_STATUS        void *
  67 #   define __WAIT_STATUS_DEFN   void *
  68 #  else
  69 /* This works in GCC 2.6.1 and later.  */
  70 typedef union
  71   {
  72     union wait *__uptr;
  73     int *__iptr;
  74   } __WAIT_STATUS __attribute__ ((__transparent_union__));
  75 #   define __WAIT_STATUS_DEFN   int *
  76 #  endif
  77
  78 # else /* Don't use BSD.  */
  79
  80 #  define __WAIT_INT(status)    (status)
  81 #  define __WAIT_STATUS         int *
  82 #  define __WAIT_STATUS_DEFN    int *
  83
  84 # endif /* Use BSD.  */
  85
  86 /* Define the macros <sys/wait.h> also would define this way.  */
  87 # define WEXITSTATUS(status)    __WEXITSTATUS (__WAIT_INT (status))
  88 # define WTERMSIG(status)       __WTERMSIG (__WAIT_INT (status))
  89 # define WSTOPSIG(status)       __WSTOPSIG (__WAIT_INT (status))
  90 # define WIFEXITED(status)      __WIFEXITED (__WAIT_INT (status))
  91 # define WIFSIGNALED(status)    __WIFSIGNALED (__WAIT_INT (status))
  92 # define WIFSTOPPED(status)     __WIFSTOPPED (__WAIT_INT (status))
  93 # ifdef __WIFCONTINUED
  94 #  define WIFCONTINUED(status)  __WIFCONTINUED (__WAIT_INT (status))
  95 # endif
  96 #endif  /* X/Open and <sys/wait.h> not included.  */
  97
  98 __BEGIN_NAMESPACE_STD
  99 /* Returned by `div'.  */
 100 typedef struct
 101   {
 102     int quot;                   /* Quotient.  */
 103     int rem;                    /* Remainder.  */
 104   } div_t;
 105
 106 /* Returned by `ldiv'.  */
 107 #ifndef __ldiv_t_defined
 108 typedef struct
 109   {
 110     long int quot;              /* Quotient.  */
 111     long int rem;               /* Remainder.  */
 112   } ldiv_t;
 113 # define __ldiv_t_defined       1
 114 #endif
 115 __END_NAMESPACE_STD
 116
 117 #if defined __USE_ISOC99 && !defined __lldiv_t_defined
 118 __BEGIN_NAMESPACE_C99
 119 /* Returned by `lldiv'.  */
 120 __extension__ typedef struct
 121   {
 122     long long int quot;         /* Quotient.  */
 123     long long int rem;          /* Remainder.  */
 124   } lldiv_t;
 125 # define __lldiv_t_defined      1
 126 __END_NAMESPACE_C99
 127 #endif
 128
 129
 130 /* The largest number rand will return (same as INT_MAX).  */
 131 #define RAND_MAX        2147483647
 132
 133
 134 /* We define these the same for all machines.
 135    Changes from this to the outside world should be done in `_exit'.  */
 136 #define EXIT_FAILURE    1       /* Failing exit status.  */
 137 #define EXIT_SUCCESS    0       /* Successful exit status.  */
 138
 139
 140 /* Maximum length of a multibyte character in the current locale.  */
 141 #if 0
 142 #define MB_CUR_MAX      (__ctype_get_mb_cur_max ())
 143 extern size_t __ctype_get_mb_cur_max (void) __THROW __wur;
 144 #else
 145 #ifdef __UCLIBC_HAS_WCHAR__
 146 # define        MB_CUR_MAX      (_stdlib_mb_cur_max ())
 147 extern size_t _stdlib_mb_cur_max (void) __THROW __wur;
 148 #else
 149 # define        MB_CUR_MAX      1
 150 #endif
 151 #endif
 152
 153
 154 __BEGIN_NAMESPACE_STD
 155 #ifdef __UCLIBC_HAS_FLOATS__
 156 /* Convert a string to a floating-point number.  */
 157 extern double atof (__const char *__nptr)
 158      __THROW __attribute_pure__ __nonnull ((1)) __wur;
 159 #endif /* __UCLIBC_HAS_FLOATS__ */
 160 /* Convert a string to an integer.  */
 161 extern int atoi (__const char *__nptr)
 162      __THROW __attribute_pure__ __nonnull ((1)) __wur;
 163 /* Convert a string to a long integer.  */
 164 extern long int atol (__const char *__nptr)
 165      __THROW __attribute_pure__ __nonnull ((1)) __wur;
 166 __END_NAMESPACE_STD
 167
 168 #if defined __USE_ISOC99 || defined __USE_MISC
 169 __BEGIN_NAMESPACE_C99
 170 /* Convert a string to a long long integer.  */
 171 __extension__ extern long long int atoll (__const char *__nptr)
 172      __THROW __attribute_pure__ __nonnull ((1)) __wur;
 173 __END_NAMESPACE_C99
 174 #endif
 175
 176 #ifdef __UCLIBC_HAS_FLOATS__
 177 __BEGIN_NAMESPACE_STD
 178 /* Convert a string to a floating-point number.  */
 179 extern double strtod (__const char *__restrict __nptr,
 180                       char **__restrict __endptr)
 181      __THROW __nonnull ((1)) __wur;
 182 __END_NAMESPACE_STD
 183
 184 #ifdef  __USE_ISOC99
 185 __BEGIN_NAMESPACE_C99
 186 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 187 extern float strtof (__const char *__restrict __nptr,
 188                      char **__restrict __endptr) __THROW __nonnull ((1)) __wur;
 189
 190 extern long double strtold (__const char *__restrict __nptr,
 191                             char **__restrict __endptr)
 192      __THROW __nonnull ((1)) __wur;
 193 __END_NAMESPACE_C99
 194 #endif
 195 #endif /* __UCLIBC_HAS_FLOATS__ */
 196
 197 __BEGIN_NAMESPACE_STD
 198 /* Convert a string to a long integer.  */
 199 extern long int strtol (__const char *__restrict __nptr,
 200                         char **__restrict __endptr, int __base)
 201      __THROW __nonnull ((1)) __wur;
 202 /* Convert a string to an unsigned long integer.  */
 203 extern unsigned long int strtoul (__const char *__restrict __nptr,
 204                                   char **__restrict __endptr, int __base)
 205      __THROW __nonnull ((1)) __wur;
 206 __END_NAMESPACE_STD
 207
 208 #ifdef __USE_BSD
 209 #include <sys/types.h> /* for u_quad_t */
 210
 211 /* Convert a string to a quadword integer.  */
 212 __extension__
 213 extern quad_t strtoq (__const char *__restrict __nptr,
 214                              char **__restrict __endptr, int __base)
 215      __THROW __nonnull ((1)) __wur;
 216 /* Convert a string to an unsigned quadword integer.  */
 217 __extension__
 218 extern u_quad_t strtouq (__const char *__restrict __nptr,
 219                                        char **__restrict __endptr, int __base)
 220      __THROW __nonnull ((1)) __wur;
 221 #endif /* GCC and use BSD.  */
 222
 223 #if defined __USE_ISOC99 || defined __USE_MISC
 224 __BEGIN_NAMESPACE_C99
 225 /* Convert a string to a quadword integer.  */
 226 __extension__
 227 extern long long int strtoll (__const char *__restrict __nptr,
 228                               char **__restrict __endptr, int __base)
 229      __THROW __nonnull ((1)) __wur;
 230 /* Convert a string to an unsigned quadword integer.  */
 231 __extension__
 232 extern unsigned long long int strtoull (__const char *__restrict __nptr,
 233                                         char **__restrict __endptr, int __base)
 234      __THROW __nonnull ((1)) __wur;
 235 __END_NAMESPACE_C99
 236 #endif /* ISO C99 or GCC and use MISC.  */
 237
 238
 239 #if defined __USE_GNU && defined __UCLIBC_HAS_XLOCALE__
 240 /* The concept of one static locale per category is not very well
 241    thought out.  Many applications will need to process its data using
 242    information from several different locales.  Another problem is
 243    the implementation of the internationalization handling in the
 244    ISO C++ standard library.  To support this another set of
 245    the functions using locale data exist which take an additional
 246    argument.
 247
 248    Attention: even though several *_l interfaces are part of POSIX:2008,
 249    these are not.  */
 250
 251 /* Structure for reentrant locale using functions.  This is an
 252    (almost) opaque type for the user level programs.  */
 253 # include <xlocale.h>
 254
 255 /* Special versions of the functions above which take the locale to
 256    use as an additional parameter.  */
 257 extern long int strtol_l (__const char *__restrict __nptr,
 258                           char **__restrict __endptr, int __base,
 259                           __locale_t __loc) __THROW __nonnull ((1, 4)) __wur;
 260
 261 extern unsigned long int strtoul_l (__const char *__restrict __nptr,
 262                                     char **__restrict __endptr,
 263                                     int __base, __locale_t __loc)
 264      __THROW __nonnull ((1, 4)) __wur;
 265
 266 __extension__
 267 extern long long int strtoll_l (__const char *__restrict __nptr,
 268                                 char **__restrict __endptr, int __base,
 269                                 __locale_t __loc)
 270      __THROW __nonnull ((1, 4)) __wur;
 271
 272 __extension__
 273 extern unsigned long long int strtoull_l (__const char *__restrict __nptr,
 274                                           char **__restrict __endptr,
 275                                           int __base, __locale_t __loc)
 276      __THROW __nonnull ((1, 4)) __wur;
 277
 278 #ifdef __UCLIBC_HAS_FLOATS__
 279 extern double strtod_l (__const char *__restrict __nptr,
 280                         char **__restrict __endptr, __locale_t __loc)
 281      __THROW __nonnull ((1, 3)) __wur;
 282
 283 extern float strtof_l (__const char *__restrict __nptr,
 284                        char **__restrict __endptr, __locale_t __loc)
 285      __THROW __nonnull ((1, 3)) __wur;
 286
 287 extern long double strtold_l (__const char *__restrict __nptr,
 288                               char **__restrict __endptr,
 289                               __locale_t __loc)
 290      __THROW __nonnull ((1, 3)) __wur;
 291 #endif /* __UCLIBC_HAS_FLOATS__ */
 292 #endif /* GNU */
 293
 294
 295 #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED
 296 /* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant
 297    digit first.  Returns a pointer to static storage overwritten by the
 298    next call.  */
 299 extern char *l64a (long int __n) __THROW __wur;
 300
 301 /* Read a number from a string S in base 64 as above.  */
 302 extern long int a64l (__const char *__s)
 303      __THROW __attribute_pure__ __nonnull ((1)) __wur;
 304
 305 #endif  /* Use SVID || extended X/Open.  */
 306
 307 #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED || defined __USE_BSD
 308 # include <sys/types.h> /* we need int32_t... */
 309
 310 /* These are the functions that actually do things.  The `random', `srandom',
 311    `initstate' and `setstate' functions are those from BSD Unices.
 312    The `rand' and `srand' functions are required by the ANSI standard.
 313    We provide both interfaces to the same random number generator.  */
 314 /* Return a random long integer between 0 and RAND_MAX inclusive.  */
 315 extern long int random (void) __THROW;
 316
 317 /* Seed the random number generator with the given number.  */
 318 extern void srandom (unsigned int __seed) __THROW;
 319
 320 /* Initialize the random number generator to use state buffer STATEBUF,
 321    of length STATELEN, and seed it with SEED.  Optimal lengths are 8, 16,
 322    32, 64, 128 and 256, the bigger the better; values less than 8 will
 323    cause an error and values greater than 256 will be rounded down.  */
 324 extern char *initstate (unsigned int __seed, char *__statebuf,
 325                         size_t __statelen) __THROW __nonnull ((2));
 326
 327 /* Switch the random number generator to state buffer STATEBUF,
 328    which should have been previously initialized by `initstate'.  */
 329 extern char *setstate (char *__statebuf) __THROW __nonnull ((1));
 330
 331
 332 # ifdef __USE_MISC
 333 /* Reentrant versions of the `random' family of functions.
 334    These functions all use the following data structure to contain
 335    state, rather than global state variables.  */
 336
 337 struct random_data
 338   {
 339     int32_t *fptr;              /* Front pointer.  */
 340     int32_t *rptr;              /* Rear pointer.  */
 341     int32_t *state;             /* Array of state values.  */
 342 #if 0
 343     int rand_type;              /* Type of random number generator.  */
 344     int rand_deg;               /* Degree of random number generator.  */
 345     int rand_sep;               /* Distance between front and rear.  */
 346 #else
 347     /* random_r.c, TYPE_x, DEG_x, SEP_x - small enough for int8_t */
 348     int8_t rand_type;           /* Type of random number generator.  */
 349     int8_t rand_deg;            /* Degree of random number generator.  */
 350     int8_t rand_sep;            /* Distance between front and rear.  */
 351 #endif
 352     int32_t *end_ptr;           /* Pointer behind state table.  */
 353   };
 354
 355 extern int random_r (struct random_data *__restrict __buf,
 356                      int32_t *__restrict __result) __THROW __nonnull ((1, 2));
 357
 358 extern int srandom_r (unsigned int __seed, struct random_data *__buf)
 359      __THROW __nonnull ((2));
 360
 361 extern int initstate_r (unsigned int __seed, char *__restrict __statebuf,
 362                         size_t __statelen,
 363                         struct random_data *__restrict __buf)
 364      __THROW __nonnull ((2, 4));
 365
 366 extern int setstate_r (char *__restrict __statebuf,
 367                        struct random_data *__restrict __buf)
 368      __THROW __nonnull ((1, 2));
 369 # endif /* Use misc.  */
 370 #endif  /* Use SVID || extended X/Open || BSD. */
 371
 372
 373 __BEGIN_NAMESPACE_STD
 374 /* Return a random integer between 0 and RAND_MAX inclusive.  */
 375 extern int rand (void) __THROW;
 376 /* Seed the random number generator with the given number.  */
 377 extern void srand (unsigned int __seed) __THROW;
 378 __END_NAMESPACE_STD
 379
 380 #ifdef __USE_POSIX
 381 /* Reentrant interface according to POSIX.1.  */
 382 extern int rand_r (unsigned int *__seed) __THROW;
 383 #endif
 384
 385
 386 #if defined __USE_SVID || defined __USE_XOPEN
 387 /* System V style 48-bit random number generator functions.  */
 388
 389 #ifdef __UCLIBC_HAS_FLOATS__
 390 /* Return non-negative, double-precision floating-point value in [0.0,1.0).  */
 391 extern double drand48 (void) __THROW;
 392 extern double erand48 (unsigned short int __xsubi[3]) __THROW __nonnull ((1));
 393 #endif /* __UCLIBC_HAS_FLOATS__ */
 394
 395 /* Return non-negative, long integer in [0,2^31).  */
 396 extern long int lrand48 (void) __THROW;
 397 extern long int nrand48 (unsigned short int __xsubi[3])
 398      __THROW __nonnull ((1));
 399
 400 /* Return signed, long integers in [-2^31,2^31).  */
 401 extern long int mrand48 (void) __THROW;
 402 extern long int jrand48 (unsigned short int __xsubi[3])
 403      __THROW __nonnull ((1));
 404
 405 /* Seed random number generator.  */
 406 extern void srand48 (long int __seedval) __THROW;
 407 extern unsigned short int *seed48 (unsigned short int __seed16v[3])
 408      __THROW __nonnull ((1));
 409 extern void lcong48 (unsigned short int __param[7]) __THROW __nonnull ((1));
 410
 411 # ifdef __USE_MISC
 412 /* Data structure for communication with thread safe versions.  This
 413    type is to be regarded as opaque.  It's only exported because users
 414    have to allocate objects of this type.  */
 415 struct drand48_data
 416   {
 417     unsigned short int __x[3];  /* Current state.  */
 418     unsigned short int __old_x[3]; /* Old state.  */
 419     unsigned short int __c;     /* Additive const. in congruential formula.  */
 420     unsigned short int __init;  /* Flag for initializing.  */
 421     unsigned long long int __a; /* Factor in congruential formula.  */
 422   };
 423
 424 #ifdef __UCLIBC_HAS_FLOATS__
 425 /* Return non-negative, double-precision floating-point value in [0.0,1.0).  */
 426 extern int drand48_r (struct drand48_data *__restrict __buffer,
 427                       double *__restrict __result) __THROW __nonnull ((1, 2));
 428 extern int erand48_r (unsigned short int __xsubi[3],
 429                       struct drand48_data *__restrict __buffer,
 430                       double *__restrict __result) __THROW __nonnull ((1, 2));
 431 #endif /* __UCLIBC_HAS_FLOATS__ */
 432
 433 /* Return non-negative, long integer in [0,2^31).  */
 434 extern int lrand48_r (struct drand48_data *__restrict __buffer,
 435                       long int *__restrict __result)
 436      __THROW __nonnull ((1, 2));
 437 extern int nrand48_r (unsigned short int __xsubi[3],
 438                       struct drand48_data *__restrict __buffer,
 439                       long int *__restrict __result)
 440      __THROW __nonnull ((1, 2));
 441
 442 /* Return signed, long integers in [-2^31,2^31).  */
 443 extern int mrand48_r (struct drand48_data *__restrict __buffer,
 444                       long int *__restrict __result)
 445      __THROW __nonnull ((1, 2));
 446 extern int jrand48_r (unsigned short int __xsubi[3],
 447                       struct drand48_data *__restrict __buffer,
 448                       long int *__restrict __result)
 449      __THROW __nonnull ((1, 2));
 450
 451 /* Seed random number generator.  */
 452 extern int srand48_r (long int __seedval, struct drand48_data *__buffer)
 453      __THROW __nonnull ((2));
 454
 455 extern int seed48_r (unsigned short int __seed16v[3],
 456                      struct drand48_data *__buffer) __THROW __nonnull ((1, 2));
 457
 458 extern int lcong48_r (unsigned short int __param[7],
 459                       struct drand48_data *__buffer)
 460      __THROW __nonnull ((1, 2));
 461 # endif /* Use misc.  */
 462 #endif  /* Use SVID or X/Open.  */
 463
 464 #endif /* don't just need malloc and calloc */
 465
 466 #ifndef __malloc_and_calloc_defined
 467 # define __malloc_and_calloc_defined
 468 __BEGIN_NAMESPACE_STD
 469 /* Allocate SIZE bytes of memory.  */
 470 extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
 471 /* We want the malloc symbols overridable at runtime
 472  * libc_hidden_proto(malloc) */
 473 /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0.  */
 474 extern void *calloc (size_t __nmemb, size_t __size)
 475      __THROW __attribute_malloc__ __wur;
 476 __END_NAMESPACE_STD
 477 #endif
 478
 479 #ifndef __need_malloc_and_calloc
 480 __BEGIN_NAMESPACE_STD
 481 /* Re-allocate the previously allocated block
 482    in PTR, making the new block SIZE bytes long.  */
 483 /* __attribute_malloc__ is not used, because if realloc returns
 484    the same pointer that was passed to it, aliasing needs to be allowed
 485    between objects pointed by the old and new pointers.  */
 486 extern void *realloc (void *__ptr, size_t __size)
 487      __THROW __attribute_warn_unused_result__;
 488 /* Free a block allocated by `malloc', `realloc' or `calloc'.  */
 489 extern void free (void *__ptr) __THROW;
 490 __END_NAMESPACE_STD
 491
 492 #if 0 /*def     __USE_MISC*/
 493 /* Free a block.  An alias for `free'.  (Sun Unices).  */
 494 extern void cfree (void *__ptr) __THROW;
 495 #endif /* Use misc.  */
 496
 497 #if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC
 498 # include <alloca.h>
 499 #endif /* Use GNU, BSD, or misc.  */
 500
 501 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
 502 /* Allocate SIZE bytes on a page boundary.  The storage cannot be freed.  */
 503 extern void *valloc (size_t __size) __THROW __attribute_malloc__ __wur;
 504 #endif
 505
 506 #if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
 507 /* Allocate memory of SIZE bytes with an alignment of ALIGNMENT.  */
 508 extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
 509      __THROW __nonnull ((1)) __wur;
 510 #endif
 511
 512 __BEGIN_NAMESPACE_STD
 513 /* Abort execution and generate a core-dump.  */
 514 extern void abort (void) __THROW __attribute__ ((__noreturn__));
 515
 516
 517 /* Register a function to be called when `exit' is called.  */
 518 extern int atexit (void (*__func) (void)) __THROW __nonnull ((1));
 519 __END_NAMESPACE_STD
 520
 521 #ifdef  __USE_MISC
 522 /* Register a function to be called with the status
 523    given to `exit' and the given argument.  */
 524 extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)
 525      __THROW __nonnull ((1));
 526 #endif
 527
 528 __BEGIN_NAMESPACE_STD
 529 /* Call all functions registered with `atexit' and `on_exit',
 530    in the reverse of the order in which they were registered,
 531    perform stdio cleanup, and terminate program execution with STATUS.  */
 532 extern void exit (int __status) __THROW __attribute__ ((__noreturn__));
 533 __END_NAMESPACE_STD
 534
 535 #ifdef __USE_ISOC99
 536 __BEGIN_NAMESPACE_C99
 537 /* Terminate the program with STATUS without calling any of the
 538    functions registered with `atexit' or `on_exit'.  */
 539 extern void _Exit (int __status) __THROW __attribute__ ((__noreturn__));
 540 __END_NAMESPACE_C99
 541 #endif
 542
 543
 544 __BEGIN_NAMESPACE_STD
 545 /* Return the value of envariable NAME, or NULL if it doesn't exist.  */
 546 extern char *getenv (__const char *__name) __THROW __nonnull ((1)) __wur;
 547 __END_NAMESPACE_STD
 548
 549 #if 0
 550 /* This function is similar to the above but returns NULL if the
 551    programs is running with SUID or SGID enabled.  */
 552 extern char *__secure_getenv (__const char *__name)
 553      __THROW __nonnull ((1)) __wur;
 554 #endif
 555
 556 #if defined __USE_SVID || defined __USE_XOPEN
 557 /* The SVID says this is in <stdio.h>, but this seems a better place.   */
 558 /* Put STRING, which is of the form "NAME=VALUE", in the environment.
 559    If there is no `=', remove NAME from the environment.  */
 560 extern int putenv (char *__string) __THROW __nonnull ((1));
 561 #endif
 562
 563 #if defined __USE_BSD || defined __USE_XOPEN2K
 564 /* Set NAME to VALUE in the environment.
 565    If REPLACE is nonzero, overwrite an existing value.  */
 566 extern int setenv (__const char *__name, __const char *__value, int __replace)
 567      __THROW __nonnull ((2));
 568
 569 /* Remove the variable NAME from the environment.  */
 570 extern int unsetenv (__const char *__name) __THROW;
 571 #endif
 572
 573 /* The following is used by uClibc in atexit.c and sysconf.c */
 574 /* We have no limit when __UCLIBC_DYNAMIC_ATEXIT__ is enabled.  */
 575 #ifdef __UCLIBC_DYNAMIC_ATEXIT__
 576 # define __UCLIBC_MAX_ATEXIT     INT_MAX
 577 #else
 578 # define __UCLIBC_MAX_ATEXIT     20
 579 #endif
 580
 581
 582 #ifdef  __USE_MISC
 583 /* The `clearenv' was planned to be added to POSIX.1 but probably
 584    never made it.  Nevertheless the POSIX.9 standard (POSIX bindings
 585    for Fortran 77) requires this function.  */
 586 extern int clearenv (void) __THROW;
 587 #endif
 588
 589
 590 #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
 591 # if defined __UCLIBC_SUSV3_LEGACY__
 592 /* Generate a unique temporary file name from TEMPLATE.
 593    The last six characters of TEMPLATE must be "XXXXXX";
 594    they are replaced with a string that makes the file name unique.
 595    Returns TEMPLATE, or a null pointer if it cannot get a unique file name.  */
 596 extern char *mktemp (char *__template) __THROW __nonnull ((1)) __wur;
 597 # endif
 598
 599 /* Generate a unique temporary file name from TEMPLATE.
 600    The last six characters of TEMPLATE must be "XXXXXX";
 601    they are replaced with a string that makes the filename unique.
 602    Returns a file descriptor open on the file for reading and writing,
 603    or -1 if it cannot create a uniquely-named file.
 604
 605    This function is a possible cancellation point and therefore not
 606    marked with __THROW.  */
 607 # ifndef __USE_FILE_OFFSET64
 608 extern int mkstemp (char *__template) __nonnull ((1)) __wur;
 609 # else
 610 #  ifdef __REDIRECT
 611 extern int __REDIRECT (mkstemp, (char *__template), mkstemp64)
 612      __nonnull ((1)) __wur;
 613 #  else
 614 #   define mkstemp mkstemp64
 615 #  endif
 616 # endif
 617 # ifdef __USE_LARGEFILE64
 618 extern int mkstemp64 (char *__template) __nonnull ((1)) __wur;
 619 # endif
 620 #endif
 621
 622 #if defined __USE_BSD || defined __USE_XOPEN2K8
 623 /* Create a unique temporary directory from TEMPLATE.
 624    The last six characters of TEMPLATE must be "XXXXXX";
 625    they are replaced with a string that makes the directory name unique.
 626    Returns TEMPLATE, or a null pointer if it cannot get a unique name.
 627    The directory is created mode 700.  */
 628 extern char *mkdtemp (char *__template) __THROW __nonnull ((1)) __wur;
 629 #endif
 630
 631
 632 __BEGIN_NAMESPACE_STD
 633 /* Execute the given line as a shell command.
 634
 635    This function is a cancellation point and therefore not marked with
 636    __THROW.  */
 637 extern int system (__const char *__command) __wur;
 638 __END_NAMESPACE_STD
 639
 640
 641 #ifdef  __USE_GNU
 642 /* Return a malloc'd string containing the canonical absolute name of the
 643    existing named file.  */
 644 extern char *canonicalize_file_name (__const char *__name)
 645      __THROW __nonnull ((1)) __wur;
 646 #endif
 647
 648 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
 649 /* Return the canonical absolute name of file NAME.  If RESOLVED is
 650    null, the result is malloc'd; otherwise, if the canonical name is
 651    PATH_MAX chars or more, returns null with `errno' set to
 652    ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars,
 653    returns the name in RESOLVED.  */
 654 extern char *realpath (__const char *__restrict __name,
 655                        char *__restrict __resolved) __THROW __wur;
 656 #endif
 657
 658
 659 /* Shorthand for type of comparison functions.  */
 660 #ifndef __COMPAR_FN_T
 661 # define __COMPAR_FN_T
 662 typedef int (*__compar_fn_t) (__const void *, __const void *);
 663
 664 # ifdef __USE_GNU
 665 typedef __compar_fn_t comparison_fn_t;
 666 # endif
 667 #endif
 668
 669 __BEGIN_NAMESPACE_STD
 670 /* Do a binary search for KEY in BASE, which consists of NMEMB elements
 671    of SIZE bytes each, using COMPAR to perform the comparisons.  */
 672 extern void *bsearch (__const void *__key, __const void *__base,
 673                       size_t __nmemb, size_t __size, __compar_fn_t __compar)
 674      __nonnull ((1, 2, 5)) __wur;
 675
 676 /* Sort NMEMB elements of BASE, of SIZE bytes each,
 677    using COMPAR to perform the comparisons.  */
 678 extern void qsort (void *__base, size_t __nmemb, size_t __size,
 679                    __compar_fn_t __compar) __nonnull ((1, 4));
 680
 681
 682 /* Return the absolute value of X.  */
 683 extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
 684 extern long int labs (long int __x) __THROW __attribute__ ((__const__)) __wur;
 685 __END_NAMESPACE_STD
 686
 687 #ifdef __USE_ISOC99
 688 __extension__ extern long long int llabs (long long int __x)
 689      __THROW __attribute__ ((__const__)) __wur;
 690 #endif
 691
 692
 693 __BEGIN_NAMESPACE_STD
 694 /* Return the `div_t', `ldiv_t' or `lldiv_t' representation
 695    of the value of NUMER over DENOM. */
 696 /* GCC may have built-ins for these someday.  */
 697 extern div_t div (int __numer, int __denom)
 698      __THROW __attribute__ ((__const__)) __wur;
 699 extern ldiv_t ldiv (long int __numer, long int __denom)
 700      __THROW __attribute__ ((__const__)) __wur;
 701 __END_NAMESPACE_STD
 702
 703 #ifdef __USE_ISOC99
 704 __BEGIN_NAMESPACE_C99
 705 __extension__ extern lldiv_t lldiv (long long int __numer,
 706                                     long long int __denom)
 707      __THROW __attribute__ ((__const__)) __wur;
 708 __END_NAMESPACE_C99
 709 #endif
 710
 711
 712 #if ( defined __USE_SVID || defined __USE_XOPEN_EXTENDED ) && defined __UCLIBC_HAS_FLOATS__
 713 /* Convert floating point numbers to strings.  The returned values are
 714    valid only until another call to the same function.  */
 715
 716 # ifdef __UCLIBC_SUSV3_LEGACY__
 717 #if 0
 718 /* Convert VALUE to a string with NDIGIT digits and return a pointer to
 719    this.  Set *DECPT with the position of the decimal character and *SIGN
 720    with the sign of the number.  */
 721 extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt,
 722                    int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
 723
 724 /* Convert VALUE to a string rounded to NDIGIT decimal digits.  Set *DECPT
 725    with the position of the decimal character and *SIGN with the sign of
 726    the number.  */
 727 extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt,
 728                    int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
 729 #endif
 730
 731 /* If possible convert VALUE to a string with NDIGIT significant digits.
 732    Otherwise use exponential representation.  The resulting string will
 733    be written to BUF.  */
 734 extern char *gcvt (double __value, int __ndigit, char *__buf)
 735      __THROW __nonnull ((3)) __wur;
 736 # endif /* __UCLIBC_SUSV3_LEGACY__ */
 737
 738
 739 # if 0 /*def __USE_MISC*/
 740 /* Long double versions of above functions.  */
 741 extern char *qecvt (long double __value, int __ndigit,
 742                     int *__restrict __decpt, int *__restrict __sign)
 743      __THROW __nonnull ((3, 4)) __wur;
 744 extern char *qfcvt (long double __value, int __ndigit,
 745                     int *__restrict __decpt, int *__restrict __sign)
 746      __THROW __nonnull ((3, 4)) __wur;
 747 extern char *qgcvt (long double __value, int __ndigit, char *__buf)
 748      __THROW __nonnull ((3)) __wur;
 749
 750
 751 /* Reentrant version of the functions above which provide their own
 752    buffers.  */
 753 extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
 754                    int *__restrict __sign, char *__restrict __buf,
 755                    size_t __len) __THROW __nonnull ((3, 4, 5));
 756 extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
 757                    int *__restrict __sign, char *__restrict __buf,
 758                    size_t __len) __THROW __nonnull ((3, 4, 5));
 759
 760 extern int qecvt_r (long double __value, int __ndigit,
 761                     int *__restrict __decpt, int *__restrict __sign,
 762                     char *__restrict __buf, size_t __len)
 763      __THROW __nonnull ((3, 4, 5));
 764 extern int qfcvt_r (long double __value, int __ndigit,
 765                     int *__restrict __decpt, int *__restrict __sign,
 766                     char *__restrict __buf, size_t __len)
 767      __THROW __nonnull ((3, 4, 5));
 768 # endif /* misc */
 769 #endif  /* use MISC || use X/Open Unix */
 770
 771
 772 #ifdef __UCLIBC_HAS_WCHAR__
 773 __BEGIN_NAMESPACE_STD
 774 /* Return the length of the multibyte character
 775    in S, which is no longer than N.  */
 776 extern int mblen (__const char *__s, size_t __n) __THROW __wur;
 777 /* Return the length of the given multibyte character,
 778    putting its `wchar_t' representation in *PWC.  */
 779 extern int mbtowc (wchar_t *__restrict __pwc,
 780                    __const char *__restrict __s, size_t __n) __THROW __wur;
 781 /* Put the multibyte character represented
 782    by WCHAR in S, returning its length.  */
 783 extern int wctomb (char *__s, wchar_t __wchar) __THROW __wur;
 784
 785
 786 /* Convert a multibyte string to a wide char string.  */
 787 extern size_t mbstowcs (wchar_t *__restrict  __pwcs,
 788                         __const char *__restrict __s, size_t __n) __THROW;
 789 /* Convert a wide char string to multibyte string.  */
 790 extern size_t wcstombs (char *__restrict __s,
 791                         __const wchar_t *__restrict __pwcs, size_t __n)
 792      __THROW;
 793 __END_NAMESPACE_STD
 794 #endif /* __UCLIBC_HAS_WCHAR__ */
 795
 796
 797 #if 0 /*def __USE_SVID*/
 798 /* Determine whether the string value of RESPONSE matches the affirmation
 799    or negative response expression as specified by the LC_MESSAGES category
 800    in the program's current locale.  Returns 1 if affirmative, 0 if
 801    negative, and -1 if not matching.  */
 802 extern int rpmatch (__const char *__response) __THROW __nonnull ((1)) __wur;
 803 #endif
 804
 805
 806 #ifdef __USE_XOPEN_EXTENDED
 807 /* Parse comma separated suboption from *OPTIONP and match against
 808    strings in TOKENS.  If found return index and set *VALUEP to
 809    optional value introduced by an equal sign.  If the suboption is
 810    not part of TOKENS return in *VALUEP beginning of unknown
 811    suboption.  On exit *OPTIONP is set to the beginning of the next
 812    token or at the terminating NUL character.  */
 813 extern int getsubopt (char **__restrict __optionp,
 814                       char *__const *__restrict __tokens,
 815                       char **__restrict __valuep)
 816      __THROW __nonnull ((1, 2, 3)) __wur;
 817 #endif
 818
 819
 820 #ifdef __USE_XOPEN
 821 # if defined __UCLIBC_HAS_CRYPT__
 822 /* Setup DES tables according KEY.  */
 823 extern void setkey (__const char *__key) __THROW __nonnull ((1));
 824 # endif /* __UCLIBC_HAS_CRYPT__ */
 825 #endif
 826
 827
 828 /* X/Open pseudo terminal handling.  */
 829
 830 #ifdef __USE_XOPEN2K
 831 /* Return a master pseudo-terminal handle.  */
 832 extern int posix_openpt (int __oflag) __wur;
 833 #endif
 834
 835 #ifdef __USE_XOPEN
 836 /* The next four functions all take a master pseudo-tty fd and
 837    perform an operation on the associated slave:  */
 838
 839 #ifdef __UCLIBC_HAS_PTY__
 840 /* Chown the slave to the calling user.  */
 841 extern int grantpt (int __fd) __THROW;
 842
 843 /* Release an internal lock so the slave can be opened.
 844    Call after grantpt().  */
 845 extern int unlockpt (int __fd) __THROW;
 846
 847 /* Return the pathname of the pseudo terminal slave assoicated with
 848    the master FD is open on, or NULL on errors.
 849    The returned storage is good until the next call to this function.  */
 850 extern char *ptsname (int __fd) __THROW __wur;
 851 #endif /* __UCLIBC_HAS_PTY__ */
 852 #endif
 853
 854 #ifdef __USE_GNU
 855 # if defined __UCLIBC_HAS_PTY__
 856 /* Store at most BUFLEN characters of the pathname of the slave pseudo
 857    terminal associated with the master FD is open on in BUF.
 858    Return 0 on success, otherwise an error number.  */
 859 extern int ptsname_r (int __fd, char *__buf, size_t __buflen)
 860      __THROW __nonnull ((2));
 861 # endif
 862 # if defined __UCLIBC_HAS_GETPT__
 863 /* Open a master pseudo terminal and return its file descriptor.  */
 864 extern int getpt (void);
 865 # endif
 866 #endif
 867
 868 #if 0 /* def __USE_BSD */
 869 /* Put the 1 minute, 5 minute and 15 minute load averages into the first
 870    NELEM elements of LOADAVG.  Return the number written (never more than
 871    three, but may be less than NELEM), or -1 if an error occurred.  */
 872 extern int getloadavg (double __loadavg[], int __nelem)
 873      __THROW __nonnull ((1));
 874 #endif
 875
 876 #ifdef __UCLIBC_HAS_ARC4RANDOM__
 877 #include <stdint.h>
 878 extern uint32_t arc4random(void);
 879 extern void arc4random_stir(void);
 880 extern void arc4random_addrandom(unsigned char *, int);
 881 #endif
 882
 883
 884 #endif /* don't just need malloc and calloc */
 885 #undef __need_malloc_and_calloc
 886
 887 __END_DECLS
 888
 889 #endif /* stdlib.h  */