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/* Copyright (C) 1991-2003, 2004, 2005 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

/*

 *      ISO C99 Standard: 7.20 General utilities        <stdlib.h>

 */

#ifndef _STDLIB_H

#include <features.h>

/* Get size_t, wchar_t and NULL from <stddef.h>.  */

#define         __need_size_t

#ifndef __need_malloc_and_calloc

# ifdef __UCLIBC_HAS_WCHAR__

#  define       __need_wchar_t

# endif

# define        __need_NULL

#endif

#include <stddef.h>

__BEGIN_DECLS

#ifndef __need_malloc_and_calloc

#define _STDLIB_H       1

#if defined __USE_XOPEN && !defined _SYS_WAIT_H

/* XPG requires a few symbols from <sys/wait.h> being defined.  */

# include <bits/waitflags.h>

# include <bits/waitstatus.h>

# ifdef __USE_BSD

/* Lots of hair to allow traditional BSD use of `union wait'

   as well as POSIX.1 use of `int' for the status word.  */

#  if defined __GNUC__ && !defined __cplusplus

#   define __WAIT_INT(status)                                                 \

  (__extension__ ({ union { __typeof(status) __in; int __i; } __u;            \

                    __u.__in = (status); __u.__i; }))

#  else

#   define __WAIT_INT(status)   (*(int *) &(status))

#  endif

/* This is the type of the argument to `wait'.  The funky union

   causes redeclarations with ether `int *' or `union wait *' to be

   allowed without complaint.  __WAIT_STATUS_DEFN is the type used in

   the actual function definitions.  */

#  if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus

#   define __WAIT_STATUS        void *

#   define __WAIT_STATUS_DEFN   void *

#  else

/* This works in GCC 2.6.1 and later.  */

typedef union

  {

    union wait *__uptr;

    int *__iptr;

  } __WAIT_STATUS __attribute__ ((__transparent_union__));

#   define __WAIT_STATUS_DEFN   int *

#  endif

# else /* Don't use BSD.  */

#  define __WAIT_INT(status)    (status)

#  define __WAIT_STATUS         int *

#  define __WAIT_STATUS_DEFN    int *

# endif /* Use BSD.  */

/* Define the macros <sys/wait.h> also would define this way.  */

# define WEXITSTATUS(status)    __WEXITSTATUS(__WAIT_INT(status))

# define WTERMSIG(status)       __WTERMSIG(__WAIT_INT(status))

# define WSTOPSIG(status)       __WSTOPSIG(__WAIT_INT(status))

# define WIFEXITED(status)      __WIFEXITED(__WAIT_INT(status))

# define WIFSIGNALED(status)    __WIFSIGNALED(__WAIT_INT(status))

# define WIFSTOPPED(status)     __WIFSTOPPED(__WAIT_INT(status))

# if 0 /* def __WIFCONTINUED */

#  define WIFCONTINUED(status)  __WIFCONTINUED(__WAIT_INT(status))

# endif

#endif  /* X/Open and <sys/wait.h> not included.  */

__BEGIN_NAMESPACE_STD

/* Returned by `div'.  */

typedef struct

  {

    int quot;                   /* Quotient.  */

    int rem;                    /* Remainder.  */

  } div_t;

/* Returned by `ldiv'.  */

#ifndef __ldiv_t_defined

typedef struct

  {

    long int quot;              /* Quotient.  */

    long int rem;               /* Remainder.  */

  } ldiv_t;

# define __ldiv_t_defined       1

#endif

__END_NAMESPACE_STD

#if defined __USE_ISOC99 && !defined __lldiv_t_defined

__BEGIN_NAMESPACE_C99

/* Returned by `lldiv'.  */

__extension__ typedef struct

  {

    long long int quot;         /* Quotient.  */

    long long int rem;          /* Remainder.  */

  } lldiv_t;

# define __lldiv_t_defined      1

__END_NAMESPACE_C99

#endif

/* The largest number rand will return (same as INT_MAX).  */

#define RAND_MAX        2147483647

/* We define these the same for all machines.

   Changes from this to the outside world should be done in `_exit'.  */

#define EXIT_FAILURE    1       /* Failing exit status.  */

#define EXIT_SUCCESS    0        /* Successful exit status.  */

/* Maximum length of a multibyte character in the current locale.  */

#if 0

#define MB_CUR_MAX      (__ctype_get_mb_cur_max ())

extern size_t __ctype_get_mb_cur_max (void) __THROW __wur;

#endif

#ifdef __UCLIBC_HAS_WCHAR__

#define MB_CUR_MAX      (_stdlib_mb_cur_max ())

extern size_t _stdlib_mb_cur_max (void) __THROW __wur;

#endif

__BEGIN_NAMESPACE_STD

#ifdef __UCLIBC_HAS_FLOATS__

/* Convert a string to a floating-point number.  */

extern double atof (__const char *__nptr)

     __THROW __attribute_pure__ __nonnull ((1)) __wur;

#endif /* __UCLIBC_HAS_FLOATS__ */

/* Convert a string to an integer.  */

extern int atoi (__const char *__nptr)

     __THROW __attribute_pure__ __nonnull ((1)) __wur;

/* Convert a string to a long integer.  */

extern long int atol (__const char *__nptr)

     __THROW __attribute_pure__ __nonnull ((1)) __wur;

__END_NAMESPACE_STD

#if defined __USE_ISOC99 || defined __USE_MISC

__BEGIN_NAMESPACE_C99

/* Convert a string to a long long integer.  */

__extension__ extern long long int atoll (__const char *__nptr)

     __THROW __attribute_pure__ __nonnull ((1)) __wur;

__END_NAMESPACE_C99

#endif

#ifdef __UCLIBC_HAS_FLOATS__

__BEGIN_NAMESPACE_STD

/* Convert a string to a floating-point number.  */

extern double strtod (__const char *__restrict __nptr,

                      char **__restrict __endptr)

     __THROW __nonnull ((1)) __wur;

__END_NAMESPACE_STD

#ifdef  __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Likewise for `float' and `long double' sizes of floating-point numbers.  */

extern float strtof (__const char *__restrict __nptr,

                     char **__restrict __endptr) __THROW __nonnull ((1)) __wur;

extern long double strtold (__const char *__restrict __nptr,

                            char **__restrict __endptr)

     __THROW __nonnull ((1)) __wur;

__END_NAMESPACE_C99

#endif

#endif /* __UCLIBC_HAS_FLOATS__ */

__BEGIN_NAMESPACE_STD

/* Convert a string to a long integer.  */

extern long int strtol (__const char *__restrict __nptr,

                        char **__restrict __endptr, int __base)

     __THROW __nonnull ((1)) __wur;

/* Convert a string to an unsigned long integer.  */

extern unsigned long int strtoul (__const char *__restrict __nptr,

                                  char **__restrict __endptr, int __base)

     __THROW __nonnull ((1)) __wur;

__END_NAMESPACE_STD

#ifdef __USE_BSD

/* Convert a string to a quadword integer.  */

__extension__

extern long long int strtoq (__const char *__restrict __nptr,

                             char **__restrict __endptr, int __base)

     __THROW __nonnull ((1)) __wur;

/* Convert a string to an unsigned quadword integer.  */

__extension__

extern unsigned long long int strtouq (__const char *__restrict __nptr,

                                       char **__restrict __endptr, int __base)

     __THROW __nonnull ((1)) __wur;

#endif /* GCC and use BSD.  */

#if defined __USE_ISOC99 || defined __USE_MISC

__BEGIN_NAMESPACE_C99

/* Convert a string to a quadword integer.  */

__extension__

extern long long int strtoll (__const char *__restrict __nptr,

                              char **__restrict __endptr, int __base)

     __THROW __nonnull ((1)) __wur;

/* Convert a string to an unsigned quadword integer.  */

__extension__

extern unsigned long long int strtoull (__const char *__restrict __nptr,

                                        char **__restrict __endptr, int __base)

     __THROW __nonnull ((1)) __wur;

__END_NAMESPACE_C99

#endif /* ISO C99 or GCC and use MISC.  */

#ifdef __UCLIBC_HAS_XLOCALE__

#ifdef __USE_GNU

/* The concept of one static locale per category is not very well

   thought out.  Many applications will need to process its data using

   information from several different locales.  Another application is

   the implementation of the internationalization handling in the

   upcoming ISO C++ standard library.  To support this another set of

   the functions using locale data exist which have an additional

   argument.

   Attention: all these functions are *not* standardized in any form.

   This is a proof-of-concept implementation.  */

/* Structure for reentrant locale using functions.  This is an

   (almost) opaque type for the user level programs.  */

# include <xlocale.h>

/* Special versions of the functions above which take the locale to

   use as an additional parameter.  */

extern long int strtol_l (__const char *__restrict __nptr,

                          char **__restrict __endptr, int __base,

                          __locale_t __loc) __THROW __nonnull ((1, 4)) __wur;

extern unsigned long int strtoul_l (__const char *__restrict __nptr,

                                    char **__restrict __endptr,

                                    int __base, __locale_t __loc)

     __THROW __nonnull ((1, 4)) __wur;

__extension__

extern long long int strtoll_l (__const char *__restrict __nptr,

                                char **__restrict __endptr, int __base,

                                __locale_t __loc)

     __THROW __nonnull ((1, 4)) __wur;

__extension__

extern unsigned long long int strtoull_l (__const char *__restrict __nptr,

                                          char **__restrict __endptr,

                                          int __base, __locale_t __loc)

     __THROW __nonnull ((1, 4)) __wur;

#ifdef __UCLIBC_HAS_FLOATS__

extern double strtod_l (__const char *__restrict __nptr,

                        char **__restrict __endptr, __locale_t __loc)

     __THROW __nonnull ((1, 3)) __wur;

extern float strtof_l (__const char *__restrict __nptr,

                       char **__restrict __endptr, __locale_t __loc)

     __THROW __nonnull ((1, 3)) __wur;

extern long double strtold_l (__const char *__restrict __nptr,

                              char **__restrict __endptr,

                              __locale_t __loc)

     __THROW __nonnull ((1, 3)) __wur;

#endif /* __UCLIBC_HAS_FLOATS__ */

#endif /* GNU */

#endif /* __UCLIBC_HAS_XLOCALE__ */

#if defined __USE_SVID || defined __USE_XOPEN_EXTENDED

/* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant

   digit first.  Returns a pointer to static storage overwritten by the

   next call.  */

extern char *l64a (long int __n) __THROW __wur;

/* Read a number from a string S in base 64 as above.  */

extern long int a64l (__const char *__s)

     __THROW __attribute_pure__ __nonnull ((1)) __wur;

#endif  /* Use SVID || extended X/Open.  */

#if defined __USE_SVID || defined __USE_XOPEN_EXTENDED || defined __USE_BSD

# include <sys/types.h> /* we need int32_t... */

/* These are the functions that actually do things.  The `random', `srandom',

   `initstate' and `setstate' functions are those from BSD Unices.

   The `rand' and `srand' functions are required by the ANSI standard.

   We provide both interfaces to the same random number generator.  */

/* Return a random long integer between 0 and RAND_MAX inclusive.  */

extern long int random (void) __THROW;

/* Seed the random number generator with the given number.  */

extern void srandom (unsigned int __seed) __THROW;

/* Initialize the random number generator to use state buffer STATEBUF,

   of length STATELEN, and seed it with SEED.  Optimal lengths are 8, 16,

   32, 64, 128 and 256, the bigger the better; values less than 8 will

   cause an error and values greater than 256 will be rounded down.  */

extern char *initstate (unsigned int __seed, char *__statebuf,

                        size_t __statelen) __THROW __nonnull ((2));

/* Switch the random number generator to state buffer STATEBUF,

   which should have been previously initialized by `initstate'.  */

extern char *setstate (char *__statebuf) __THROW __nonnull ((1));

# ifdef __USE_MISC

/* Reentrant versions of the `random' family of functions.

   These functions all use the following data structure to contain

   state, rather than global state variables.  */

struct random_data

  {

    int32_t *fptr;              /* Front pointer.  */

    int32_t *rptr;              /* Rear pointer.  */

    int32_t *state;             /* Array of state values.  */

    int rand_type;              /* Type of random number generator.  */

    int rand_deg;               /* Degree of random number generator.  */

    int rand_sep;               /* Distance between front and rear.  */

    int32_t *end_ptr;           /* Pointer behind state table.  */

  };

extern int random_r (struct random_data *__restrict __buf,

                     int32_t *__restrict __result) __THROW __nonnull ((1, 2));

extern int srandom_r (unsigned int __seed, struct random_data *__buf)

     __THROW __nonnull ((2));

extern int initstate_r (unsigned int __seed, char *__restrict __statebuf,

                        size_t __statelen,

                        struct random_data *__restrict __buf)

     __THROW __nonnull ((2, 4));

extern int setstate_r (char *__restrict __statebuf,

                       struct random_data *__restrict __buf)

     __THROW __nonnull ((1, 2));

# endif /* Use misc.  */

#endif  /* Use SVID || extended X/Open || BSD. */

__BEGIN_NAMESPACE_STD

/* Return a random integer between 0 and RAND_MAX inclusive.  */

extern int rand (void) __THROW;

/* Seed the random number generator with the given number.  */

extern void srand (unsigned int __seed) __THROW;

__END_NAMESPACE_STD

#ifdef __USE_POSIX

/* Reentrant interface according to POSIX.1.  */

extern int rand_r (unsigned int *__seed) __THROW;

#endif

#if defined __USE_SVID || defined __USE_XOPEN

/* System V style 48-bit random number generator functions.  */

#ifdef __UCLIBC_HAS_FLOATS__

/* Return non-negative, double-precision floating-point value in [0.0,1.0).  */

extern double drand48 (void) __THROW;

extern double erand48 (unsigned short int __xsubi[3]) __THROW __nonnull ((1));

#endif /* __UCLIBC_HAS_FLOATS__ */

/* Return non-negative, long integer in [0,2^31).  */

extern long int lrand48 (void) __THROW;

extern long int nrand48 (unsigned short int __xsubi[3])

     __THROW __nonnull ((1));

/* Return signed, long integers in [-2^31,2^31).  */

extern long int mrand48 (void) __THROW;

extern long int jrand48 (unsigned short int __xsubi[3])

     __THROW __nonnull ((1));

/* Seed random number generator.  */

extern void srand48 (long int __seedval) __THROW;

extern unsigned short int *seed48 (unsigned short int __seed16v[3])

     __THROW __nonnull ((1));

extern void lcong48 (unsigned short int __param[7]) __THROW __nonnull ((1));

# ifdef __USE_MISC

/* Data structure for communication with thread safe versions.  This

   type is to be regarded as opaque.  It's only exported because users

   have to allocate objects of this type.  */

struct drand48_data

  {

    unsigned short int __x[3];  /* Current state.  */

    unsigned short int __old_x[3]; /* Old state.  */

    unsigned short int __c;     /* Additive const. in congruential formula.  */

    unsigned short int __init;  /* Flag for initializing.  */

    unsigned long long int __a; /* Factor in congruential formula.  */

  };

#ifdef __UCLIBC_HAS_FLOATS__

/* Return non-negative, double-precision floating-point value in [0.0,1.0).  */

extern int drand48_r (struct drand48_data *__restrict __buffer,

                      double *__restrict __result) __THROW __nonnull ((1, 2));

extern int erand48_r (unsigned short int __xsubi[3],

                      struct drand48_data *__restrict __buffer,

                      double *__restrict __result) __THROW __nonnull ((1, 2));

#endif /* __UCLIBC_HAS_FLOATS__ */

/* Return non-negative, long integer in [0,2^31).  */

extern int lrand48_r (struct drand48_data *__restrict __buffer,

                      long int *__restrict __result)

     __THROW __nonnull ((1, 2));

extern int nrand48_r (unsigned short int __xsubi[3],

                      struct drand48_data *__restrict __buffer,

                      long int *__restrict __result)

     __THROW __nonnull ((1, 2));

/* Return signed, long integers in [-2^31,2^31).  */

extern int mrand48_r (struct drand48_data *__restrict __buffer,

                      long int *__restrict __result)

     __THROW __nonnull ((1, 2));

extern int jrand48_r (unsigned short int __xsubi[3],

                      struct drand48_data *__restrict __buffer,

                      long int *__restrict __result)

     __THROW __nonnull ((1, 2));

/* Seed random number generator.  */

extern int srand48_r (long int __seedval, struct drand48_data *__buffer)

     __THROW __nonnull ((2));

extern int seed48_r (unsigned short int __seed16v[3],

                     struct drand48_data *__buffer) __THROW __nonnull ((1, 2));

extern int lcong48_r (unsigned short int __param[7],

                      struct drand48_data *__buffer)

     __THROW __nonnull ((1, 2));

# endif /* Use misc.  */

#endif  /* Use SVID or X/Open.  */

#endif /* don't just need malloc and calloc */

#ifndef __malloc_and_calloc_defined

# define __malloc_and_calloc_defined

__BEGIN_NAMESPACE_STD

/* Allocate SIZE bytes of memory.  */

extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;

/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0.  */

extern void *calloc (size_t __nmemb, size_t __size)

     __THROW __attribute_malloc__ __wur;

__END_NAMESPACE_STD

#endif

#ifndef __need_malloc_and_calloc

__BEGIN_NAMESPACE_STD

/* Re-allocate the previously allocated block

   in PTR, making the new block SIZE bytes long.  */

extern void *realloc (void *__ptr, size_t __size)

     __THROW __attribute_malloc__ __attribute_warn_unused_result__;

/* Free a block allocated by `malloc', `realloc' or `calloc'.  */

extern void free (void *__ptr) __THROW;

__END_NAMESPACE_STD

#ifdef  __USE_MISC

/* Free a block.  An alias for `free'.  (Sun Unices).  */

extern void cfree (void *__ptr) __THROW;

#endif /* Use misc.  */

#if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC

# include <alloca.h>

#endif /* Use GNU, BSD, or misc.  */

#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED

/* Allocate SIZE bytes on a page boundary.  The storage cannot be freed.  */

extern void *valloc (size_t __size) __THROW __attribute_malloc__ __wur;

#endif

#ifdef __USE_XOPEN2K

/* Allocate memory of SIZE bytes with an alignment of ALIGNMENT.  */

extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)

     __THROW __nonnull ((1)) __wur;

#endif

__BEGIN_NAMESPACE_STD

/* Abort execution and generate a core-dump.  */

extern void abort (void) __THROW __attribute__ ((__noreturn__));

/* Register a function to be called when `exit' is called.  */

extern int atexit (void (*__func) (void)) __THROW __nonnull ((1));

__END_NAMESPACE_STD

#ifdef  __USE_MISC

/* Register a function to be called with the status

   given to `exit' and the given argument.  */

extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)

     __THROW __nonnull ((1));

#endif

__BEGIN_NAMESPACE_STD

/* Call all functions registered with `atexit' and `on_exit',

   in the reverse of the order in which they were registered

   perform stdio cleanup, and terminate program execution with STATUS.  */

extern void exit (int __status) __THROW __attribute__ ((__noreturn__));

__END_NAMESPACE_STD

#ifdef __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Terminate the program with STATUS without calling any of the

   functions registered with `atexit' or `on_exit'.  */

extern void _Exit (int __status) __THROW __attribute__ ((__noreturn__));

__END_NAMESPACE_C99

#endif

__BEGIN_NAMESPACE_STD

/* Return the value of envariable NAME, or NULL if it doesn't exist.  */

extern char *getenv (__const char *__name) __THROW __nonnull ((1)) __wur;

__END_NAMESPACE_STD

/* This function is similar to the above but returns NULL if the

   programs is running with SUID or SGID enabled.  */

extern char *__secure_getenv (__const char *__name)

     __THROW __nonnull ((1)) __wur;

#if defined __USE_SVID || defined __USE_XOPEN

/* The SVID says this is in <stdio.h>, but this seems a better place.   */

/* Put STRING, which is of the form "NAME=VALUE", in the environment.

   If there is no `=', remove NAME from the environment.  */

extern int putenv (char *__string) __THROW __nonnull ((1));

#endif

#if defined __USE_BSD || defined __USE_XOPEN2K

/* Set NAME to VALUE in the environment.

   If REPLACE is nonzero, overwrite an existing value.  */

extern int setenv (__const char *__name, __const char *__value, int __replace)

     __THROW __nonnull ((2));

/* Remove the variable NAME from the environment.  */

extern int unsetenv (__const char *__name) __THROW;

#endif

/* The following is used by uClibc in atexit.c and sysconf.c */

/* We have no limit when __UCLIBC_DYNAMIC_ATEXIT__ is enabled.  */

#ifdef __UCLIBC_DYNAMIC_ATEXIT__

# define __UCLIBC_MAX_ATEXIT     INT_MAX

#else

# define __UCLIBC_MAX_ATEXIT     20

#endif

#ifdef  __USE_MISC

/* The `clearenv' was planned to be added to POSIX.1 but probably

   never made it.  Nevertheless the POSIX.9 standard (POSIX bindings

   for Fortran 77) requires this function.  */

extern int clearenv (void) __THROW;

#endif

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED

/* Generate a unique temporary file name from TEMPLATE.

   The last six characters of TEMPLATE must be "XXXXXX";

   they are replaced with a string that makes the file name unique.

   Returns TEMPLATE, or a null pointer if it cannot get a unique file name.  */

extern char *mktemp (char *__template) __THROW __nonnull ((1)) __wur;

/* Generate a unique temporary file name from TEMPLATE.

   The last six characters of TEMPLATE must be "XXXXXX";

   they are replaced with a string that makes the filename unique.

   Returns a file descriptor open on the file for reading and writing,

   or -1 if it cannot create a uniquely-named file.

   This function is a possible cancellation points and therefore not

   marked with __THROW.  */

# ifndef __USE_FILE_OFFSET64

extern int mkstemp (char *__template) __nonnull ((1)) __wur;

# else

#  ifdef __REDIRECT

extern int __REDIRECT (mkstemp, (char *__template), mkstemp64)

     __nonnull ((1)) __wur;

#  else

#   define mkstemp mkstemp64

#  endif

# endif

# ifdef __USE_LARGEFILE64

extern int mkstemp64 (char *__template) __nonnull ((1)) __wur;

# endif

#endif

#ifdef __USE_BSD

/* Create a unique temporary directory from TEMPLATE.

   The last six characters of TEMPLATE must be "XXXXXX";

   they are replaced with a string that makes the directory name unique.

   Returns TEMPLATE, or a null pointer if it cannot get a unique name.

   The directory is created mode 700.  */

extern char *mkdtemp (char *__template) __THROW __nonnull ((1)) __wur;

#endif

__BEGIN_NAMESPACE_STD

/* Execute the given line as a shell command.

   This function is a cancellation point and therefore not marked with

   __THROW.  */

extern int system (__const char *__command) __wur;

__END_NAMESPACE_STD

#if 0 /* def    __USE_GNU */

/* Return a malloc'd string containing the canonical absolute name of the

   named file.  The last file name component need not exist, and may be a

   symlink to a nonexistent file.  */

extern char *canonicalize_file_name (__const char *__name)

     __THROW __nonnull ((1)) __wur;

#endif

#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED

/* Return the canonical absolute name of file NAME.  The last file name

   component need not exist, and may be a symlink to a nonexistent file.

   If RESOLVED is null, the result is malloc'd; otherwise, if the canonical

   name is PATH_MAX chars or more, returns null with `errno' set to

   ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars, returns the

   name in RESOLVED.  */

/* we choose to handle __resolved==NULL as crash :) */

extern char *realpath (__const char *__restrict __name,

                       char *__restrict __resolved) __THROW __wur __nonnull((2));

#endif

/* Shorthand for type of comparison functions.  */

#ifndef __COMPAR_FN_T

# define __COMPAR_FN_T

typedef int (*__compar_fn_t) (__const void *, __const void *);

# ifdef __USE_GNU

typedef __compar_fn_t comparison_fn_t;

# endif

#endif

__BEGIN_NAMESPACE_STD

/* Do a binary search for KEY in BASE, which consists of NMEMB elements

   of SIZE bytes each, using COMPAR to perform the comparisons.  */

extern void *bsearch (__const void *__key, __const void *__base,

                      size_t __nmemb, size_t __size, __compar_fn_t __compar)

     __nonnull ((1, 2, 5)) __wur;

/* Sort NMEMB elements of BASE, of SIZE bytes each,

   using COMPAR to perform the comparisons.  */

extern void qsort (void *__base, size_t __nmemb, size_t __size,

                   __compar_fn_t __compar) __nonnull ((1, 4));

/* Return the absolute value of X.  */

extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;

extern long int labs (long int __x) __THROW __attribute__ ((__const__)) __wur;

__END_NAMESPACE_STD

#ifdef __USE_ISOC99

__extension__ extern long long int llabs (long long int __x)

     __THROW __attribute__ ((__const__)) __wur;

#endif

__BEGIN_NAMESPACE_STD

/* Return the `div_t', `ldiv_t' or `lldiv_t' representation

   of the value of NUMER over DENOM. */

/* GCC may have built-ins for these someday.  */

extern div_t div (int __numer, int __denom)

     __THROW __attribute__ ((__const__)) __wur;

extern ldiv_t ldiv (long int __numer, long int __denom)

     __THROW __attribute__ ((__const__)) __wur;

__END_NAMESPACE_STD

#ifdef __USE_ISOC99

__BEGIN_NAMESPACE_C99

__extension__ extern lldiv_t lldiv (long long int __numer,

                                    long long int __denom)

     __THROW __attribute__ ((__const__)) __wur;

__END_NAMESPACE_C99

#endif

#if defined __USE_SVID || defined __USE_XOPEN_EXTENDED || defined __USE_BSD

/* Convert floating point numbers to strings.  The returned values are

   valid only until another call to the same function.  */

# ifdef __UCLIBC_SUSV3_LEGACY__

#if 0

/* Convert VALUE to a string with NDIGIT digits and return a pointer to

   this.  Set *DECPT with the position of the decimal character and *SIGN

   with the sign of the number.  */

extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt,