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diff --git a/i686-linux-gnu-4.7/usr/include/stdlib.h b/i686-linux-gnu-4.7/usr/include/stdlib.h
new file mode 100644
index 0000000..8e23e93
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/stdlib.h
@@ -0,0 +1,1022 @@
+/* Copyright (C) 1991-2018 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	ISO C99 Standard: 7.20 General utilities	<stdlib.h>
+ */
+
+#ifndef	_STDLIB_H
+
+#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
+#include <bits/libc-header-start.h>
+
+/* Get size_t, wchar_t and NULL from <stddef.h>.  */
+#define __need_size_t
+#define __need_wchar_t
+#define __need_NULL
+#include <stddef.h>
+
+__BEGIN_DECLS
+
+#define	_STDLIB_H	1
+
+#if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H
+/* XPG requires a few symbols from <sys/wait.h> being defined.  */
+# include <bits/waitflags.h>
+# include <bits/waitstatus.h>
+
+/* Define the macros <sys/wait.h> also would define this way.  */
+# define WEXITSTATUS(status)	__WEXITSTATUS (status)
+# define WTERMSIG(status)	__WTERMSIG (status)
+# define WSTOPSIG(status)	__WSTOPSIG (status)
+# define WIFEXITED(status)	__WIFEXITED (status)
+# define WIFSIGNALED(status)	__WIFSIGNALED (status)
+# define WIFSTOPPED(status)	__WIFSTOPPED (status)
+# ifdef __WIFCONTINUED
+#  define WIFCONTINUED(status)	__WIFCONTINUED (status)
+# endif
+#endif	/* X/Open or XPG7 and <sys/wait.h> not included.  */
+
+/* _FloatN API tests for enablement.  */
+#include <bits/floatn.h>
+
+/* 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
+
+#if defined __USE_ISOC99 && !defined __lldiv_t_defined
+/* Returned by `lldiv'.  */
+__extension__ typedef struct
+  {
+    long long int quot;		/* Quotient.  */
+    long long int rem;		/* Remainder.  */
+  } lldiv_t;
+# define __lldiv_t_defined	1
+#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.  */
+#define	MB_CUR_MAX	(__ctype_get_mb_cur_max ())
+extern size_t __ctype_get_mb_cur_max (void) __THROW __wur;
+
+
+/* Convert a string to a floating-point number.  */
+extern double atof (const char *__nptr)
+     __THROW __attribute_pure__ __nonnull ((1)) __wur;
+/* 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;
+
+#ifdef __USE_ISOC99
+/* Convert a string to a long long integer.  */
+__extension__ extern long long int atoll (const char *__nptr)
+     __THROW __attribute_pure__ __nonnull ((1)) __wur;
+#endif
+
+/* Convert a string to a floating-point number.  */
+extern double strtod (const char *__restrict __nptr,
+		      char **__restrict __endptr)
+     __THROW __nonnull ((1));
+
+#ifdef	__USE_ISOC99
+/* Likewise for `float' and `long double' sizes of floating-point numbers.  */
+extern float strtof (const char *__restrict __nptr,
+		     char **__restrict __endptr) __THROW __nonnull ((1));
+
+extern long double strtold (const char *__restrict __nptr,
+			    char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+/* Likewise for '_FloatN' and '_FloatNx'.  */
+
+#if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern _Float16 strtof16 (const char *__restrict __nptr,
+			  char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+#if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern _Float32 strtof32 (const char *__restrict __nptr,
+			  char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+#if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern _Float64 strtof64 (const char *__restrict __nptr,
+			  char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+#if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern _Float128 strtof128 (const char *__restrict __nptr,
+			    char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+#if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern _Float32x strtof32x (const char *__restrict __nptr,
+			    char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+#if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern _Float64x strtof64x (const char *__restrict __nptr,
+			    char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+#if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern _Float128x strtof128x (const char *__restrict __nptr,
+			      char **__restrict __endptr)
+     __THROW __nonnull ((1));
+#endif
+
+/* Convert a string to a long integer.  */
+extern long int strtol (const char *__restrict __nptr,
+			char **__restrict __endptr, int __base)
+     __THROW __nonnull ((1));
+/* 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));
+
+#ifdef __USE_MISC
+/* 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));
+/* 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));
+#endif /* Use misc.  */
+
+#ifdef __USE_ISOC99
+/* 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));
+/* 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));
+#endif /* ISO C99 or use MISC.  */
+
+/* Convert a floating-point number to a string.  */
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
+extern int strfromd (char *__dest, size_t __size, const char *__format,
+		     double __f)
+     __THROW __nonnull ((3));
+
+extern int strfromf (char *__dest, size_t __size, const char *__format,
+		     float __f)
+     __THROW __nonnull ((3));
+
+extern int strfroml (char *__dest, size_t __size, const char *__format,
+		     long double __f)
+     __THROW __nonnull ((3));
+#endif
+
+#if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern int strfromf16 (char *__dest, size_t __size, const char * __format,
+		       _Float16 __f)
+     __THROW __nonnull ((3));
+#endif
+
+#if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern int strfromf32 (char *__dest, size_t __size, const char * __format,
+		       _Float32 __f)
+     __THROW __nonnull ((3));
+#endif
+
+#if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern int strfromf64 (char *__dest, size_t __size, const char * __format,
+		       _Float64 __f)
+     __THROW __nonnull ((3));
+#endif
+
+#if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern int strfromf128 (char *__dest, size_t __size, const char * __format,
+			_Float128 __f)
+     __THROW __nonnull ((3));
+#endif
+
+#if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern int strfromf32x (char *__dest, size_t __size, const char * __format,
+			_Float32x __f)
+     __THROW __nonnull ((3));
+#endif
+
+#if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern int strfromf64x (char *__dest, size_t __size, const char * __format,
+			_Float64x __f)
+     __THROW __nonnull ((3));
+#endif
+
+#if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT)
+extern int strfromf128x (char *__dest, size_t __size, const char * __format,
+			 _Float128x __f)
+     __THROW __nonnull ((3));
+#endif
+
+
+#ifdef __USE_GNU
+/* Parallel versions of the functions above which take the locale to
+   use as an additional parameter.  These are GNU extensions inspired
+   by the POSIX.1-2008 extended locale API.  */
+# include <bits/types/locale_t.h>
+
+extern long int strtol_l (const char *__restrict __nptr,
+			  char **__restrict __endptr, int __base,
+			  locale_t __loc) __THROW __nonnull ((1, 4));
+
+extern unsigned long int strtoul_l (const char *__restrict __nptr,
+				    char **__restrict __endptr,
+				    int __base, locale_t __loc)
+     __THROW __nonnull ((1, 4));
+
+__extension__
+extern long long int strtoll_l (const char *__restrict __nptr,
+				char **__restrict __endptr, int __base,
+				locale_t __loc)
+     __THROW __nonnull ((1, 4));
+
+__extension__
+extern unsigned long long int strtoull_l (const char *__restrict __nptr,
+					  char **__restrict __endptr,
+					  int __base, locale_t __loc)
+     __THROW __nonnull ((1, 4));
+
+extern double strtod_l (const char *__restrict __nptr,
+			char **__restrict __endptr, locale_t __loc)
+     __THROW __nonnull ((1, 3));
+
+extern float strtof_l (const char *__restrict __nptr,
+		       char **__restrict __endptr, locale_t __loc)
+     __THROW __nonnull ((1, 3));
+
+extern long double strtold_l (const char *__restrict __nptr,
+			      char **__restrict __endptr,
+			      locale_t __loc)
+     __THROW __nonnull ((1, 3));
+
+# if __HAVE_FLOAT16
+extern _Float16 strtof16_l (const char *__restrict __nptr,
+			    char **__restrict __endptr,
+			    locale_t __loc)
+     __THROW __nonnull ((1, 3));
+# endif
+
+# if __HAVE_FLOAT32
+extern _Float32 strtof32_l (const char *__restrict __nptr,
+			    char **__restrict __endptr,
+			    locale_t __loc)
+     __THROW __nonnull ((1, 3));
+# endif
+
+# if __HAVE_FLOAT64
+extern _Float64 strtof64_l (const char *__restrict __nptr,
+			    char **__restrict __endptr,
+			    locale_t __loc)
+     __THROW __nonnull ((1, 3));
+# endif
+
+# if __HAVE_FLOAT128
+extern _Float128 strtof128_l (const char *__restrict __nptr,
+			      char **__restrict __endptr,
+			      locale_t __loc)
+     __THROW __nonnull ((1, 3));
+# endif
+
+# if __HAVE_FLOAT32X
+extern _Float32x strtof32x_l (const char *__restrict __nptr,
+			      char **__restrict __endptr,
+			      locale_t __loc)
+     __THROW __nonnull ((1, 3));
+# endif
+
+# if __HAVE_FLOAT64X
+extern _Float64x strtof64x_l (const char *__restrict __nptr,
+			      char **__restrict __endptr,
+			      locale_t __loc)
+     __THROW __nonnull ((1, 3));
+# endif
+
+# if __HAVE_FLOAT128X
+extern _Float128x strtof128x_l (const char *__restrict __nptr,
+				char **__restrict __endptr,
+				locale_t __loc)
+     __THROW __nonnull ((1, 3));
+# endif
+#endif /* GNU */
+
+
+#ifdef __USE_EXTERN_INLINES
+__extern_inline int
+__NTH (atoi (const char *__nptr))
+{
+  return (int) strtol (__nptr, (char **) NULL, 10);
+}
+__extern_inline long int
+__NTH (atol (const char *__nptr))
+{
+  return strtol (__nptr, (char **) NULL, 10);
+}
+
+# ifdef __USE_ISOC99
+__extension__ __extern_inline long long int
+__NTH (atoll (const char *__nptr))
+{
+  return strtoll (__nptr, (char **) NULL, 10);
+}
+# endif
+#endif /* Optimizing and Inlining.  */
+
+
+#if defined __USE_MISC || 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 misc || extended X/Open.  */
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+# 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 extended X/Open || misc. */
+
+
+/* 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;
+
+#ifdef __USE_POSIX199506
+/* Reentrant interface according to POSIX.1.  */
+extern int rand_r (unsigned int *__seed) __THROW;
+#endif
+
+
+#if defined __USE_MISC || defined __USE_XOPEN
+/* System V style 48-bit random number generator functions.  */
+
+/* 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));
+
+/* 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.  */
+    __extension__ unsigned long long int __a;	/* Factor in congruential
+						   formula.  */
+  };
+
+/* 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));
+
+/* 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 misc or X/Open.  */
+
+/* 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;
+
+/* Re-allocate the previously allocated block
+   in PTR, making the new block SIZE bytes long.  */
+/* __attribute_malloc__ is not used, because if realloc returns
+   the same pointer that was passed to it, aliasing needs to be allowed
+   between objects pointed by the old and new pointers.  */
+extern void *realloc (void *__ptr, size_t __size)
+     __THROW __attribute_warn_unused_result__;
+
+#ifdef __USE_GNU
+/* Re-allocate the previously allocated block in PTR, making the new
+   block large enough for NMEMB elements of SIZE bytes each.  */
+/* __attribute_malloc__ is not used, because if reallocarray returns
+   the same pointer that was passed to it, aliasing needs to be allowed
+   between objects pointed by the old and new pointers.  */
+extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size)
+     __THROW __attribute_warn_unused_result__;
+#endif
+
+/* Free a block allocated by `malloc', `realloc' or `calloc'.  */
+extern void free (void *__ptr) __THROW;
+
+#ifdef __USE_MISC
+# include <alloca.h>
+#endif /* Use misc.  */
+
+#if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K) \
+    || defined __USE_MISC
+/* 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
+
+#ifdef __USE_ISOC11
+/* ISO C variant of aligned allocation.  */
+extern void *aligned_alloc (size_t __alignment, size_t __size)
+     __THROW __attribute_malloc__ __attribute_alloc_size__ ((2)) __wur;
+#endif
+
+/* 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));
+
+#if defined __USE_ISOC11 || defined __USE_ISOCXX11
+/* Register a function to be called when `quick_exit' is called.  */
+# ifdef __cplusplus
+extern "C++" int at_quick_exit (void (*__func) (void))
+     __THROW __asm ("at_quick_exit") __nonnull ((1));
+# else
+extern int at_quick_exit (void (*__func) (void)) __THROW __nonnull ((1));
+# endif
+#endif
+
+#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
+
+/* 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__));
+
+#if defined __USE_ISOC11 || defined __USE_ISOCXX11
+/* Call all functions registered with `at_quick_exit' in the reverse
+   of the order in which they were registered and terminate program
+   execution with STATUS.  */
+extern void quick_exit (int __status) __THROW __attribute__ ((__noreturn__));
+#endif
+
+#ifdef __USE_ISOC99
+/* 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__));
+#endif
+
+
+/* Return the value of envariable NAME, or NULL if it doesn't exist.  */
+extern char *getenv (const char *__name) __THROW __nonnull ((1)) __wur;
+
+#ifdef __USE_GNU
+/* 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;
+#endif
+
+#if defined __USE_MISC || 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
+
+#ifdef __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 __nonnull ((1));
+#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 && !defined __USE_XOPEN2K8)
+/* 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.
+   Always returns TEMPLATE, it's either a temporary file name or a null
+   string if it cannot get a unique file name.  */
+extern char *mktemp (char *__template) __THROW __nonnull ((1));
+#endif
+
+#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
+/* 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 point 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_MISC
+/* Similar to mkstemp, but the template can have a suffix after the
+   XXXXXX.  The length of the suffix is specified in the second
+   parameter.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int mkstemps (char *__template, int __suffixlen) __nonnull ((1)) __wur;
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (mkstemps, (char *__template, int __suffixlen),
+		       mkstemps64) __nonnull ((1)) __wur;
+#  else
+#   define mkstemps mkstemps64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int mkstemps64 (char *__template, int __suffixlen)
+     __nonnull ((1)) __wur;
+# endif
+#endif
+
+#ifdef __USE_XOPEN2K8
+/* 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
+
+#ifdef __USE_GNU
+/* Generate a unique temporary file name from TEMPLATE similar to
+   mkstemp.  But allow the caller to pass additional flags which are
+   used in the open call to create the file..
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int mkostemp (char *__template, int __flags) __nonnull ((1)) __wur;
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (mkostemp, (char *__template, int __flags), mkostemp64)
+     __nonnull ((1)) __wur;
+#  else
+#   define mkostemp mkostemp64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int mkostemp64 (char *__template, int __flags) __nonnull ((1)) __wur;
+# endif
+
+/* Similar to mkostemp, but the template can have a suffix after the
+   XXXXXX.  The length of the suffix is specified in the second
+   parameter.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int mkostemps (char *__template, int __suffixlen, int __flags)
+     __nonnull ((1)) __wur;
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (mkostemps, (char *__template, int __suffixlen,
+				   int __flags), mkostemps64)
+     __nonnull ((1)) __wur;
+#  else
+#   define mkostemps mkostemps64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int mkostemps64 (char *__template, int __suffixlen, int __flags)
+     __nonnull ((1)) __wur;
+# endif
+#endif
+
+
+/* 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;
+
+
+#ifdef	__USE_GNU
+/* Return a malloc'd string containing the canonical absolute name of the
+   existing named file.  */
+extern char *canonicalize_file_name (const char *__name)
+     __THROW __nonnull ((1)) __wur;
+#endif
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+/* Return the canonical absolute name of file NAME.  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.  */
+extern char *realpath (const char *__restrict __name,
+		       char *__restrict __resolved) __THROW __wur;
+#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
+#ifdef __USE_GNU
+typedef int (*__compar_d_fn_t) (const void *, const void *, void *);
+#endif
+
+/* 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;
+
+#ifdef __USE_EXTERN_INLINES
+# include <bits/stdlib-bsearch.h>
+#endif
+
+/* 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));
+#ifdef __USE_GNU
+extern void qsort_r (void *__base, size_t __nmemb, size_t __size,
+		     __compar_d_fn_t __compar, void *__arg)
+  __nonnull ((1, 4));
+#endif
+
+
+/* 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;
+
+#ifdef __USE_ISOC99
+__extension__ extern long long int llabs (long long int __x)
+     __THROW __attribute__ ((__const__)) __wur;
+#endif
+
+
+/* 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;
+
+#ifdef __USE_ISOC99
+__extension__ extern lldiv_t lldiv (long long int __numer,
+				    long long int __denom)
+     __THROW __attribute__ ((__const__)) __wur;
+#endif
+
+
+#if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) \
+    || defined __USE_MISC
+/* Convert floating point numbers to strings.  The returned values are
+   valid only until another call to the same function.  */
+
+/* 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,
+		   int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
+
+/* Convert VALUE to a string rounded to NDIGIT decimal digits.  Set *DECPT
+   with the position of the decimal character and *SIGN with the sign of
+   the number.  */
+extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt,
+		   int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
+
+/* If possible convert VALUE to a string with NDIGIT significant digits.
+   Otherwise use exponential representation.  The resulting string will
+   be written to BUF.  */
+extern char *gcvt (double __value, int __ndigit, char *__buf)
+     __THROW __nonnull ((3)) __wur;
+#endif
+
+#ifdef __USE_MISC
+/* Long double versions of above functions.  */
+extern char *qecvt (long double __value, int __ndigit,
+		    int *__restrict __decpt, int *__restrict __sign)
+     __THROW __nonnull ((3, 4)) __wur;
+extern char *qfcvt (long double __value, int __ndigit,
+		    int *__restrict __decpt, int *__restrict __sign)
+     __THROW __nonnull ((3, 4)) __wur;
+extern char *qgcvt (long double __value, int __ndigit, char *__buf)
+     __THROW __nonnull ((3)) __wur;
+
+
+/* Reentrant version of the functions above which provide their own
+   buffers.  */
+extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
+		   int *__restrict __sign, char *__restrict __buf,
+		   size_t __len) __THROW __nonnull ((3, 4, 5));
+extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
+		   int *__restrict __sign, char *__restrict __buf,
+		   size_t __len) __THROW __nonnull ((3, 4, 5));
+
+extern int qecvt_r (long double __value, int __ndigit,
+		    int *__restrict __decpt, int *__restrict __sign,
+		    char *__restrict __buf, size_t __len)
+     __THROW __nonnull ((3, 4, 5));
+extern int qfcvt_r (long double __value, int __ndigit,
+		    int *__restrict __decpt, int *__restrict __sign,
+		    char *__restrict __buf, size_t __len)
+     __THROW __nonnull ((3, 4, 5));
+#endif	/* misc */
+
+
+/* Return the length of the multibyte character
+   in S, which is no longer than N.  */
+extern int mblen (const char *__s, size_t __n) __THROW;
+/* Return the length of the given multibyte character,
+   putting its `wchar_t' representation in *PWC.  */
+extern int mbtowc (wchar_t *__restrict __pwc,
+		   const char *__restrict __s, size_t __n) __THROW;
+/* Put the multibyte character represented
+   by WCHAR in S, returning its length.  */
+extern int wctomb (char *__s, wchar_t __wchar) __THROW;
+
+
+/* Convert a multibyte string to a wide char string.  */
+extern size_t mbstowcs (wchar_t *__restrict  __pwcs,
+			const char *__restrict __s, size_t __n) __THROW;
+/* Convert a wide char string to multibyte string.  */
+extern size_t wcstombs (char *__restrict __s,
+			const wchar_t *__restrict __pwcs, size_t __n)
+     __THROW;
+
+
+#ifdef __USE_MISC
+/* Determine whether the string value of RESPONSE matches the affirmation
+   or negative response expression as specified by the LC_MESSAGES category
+   in the program's current locale.  Returns 1 if affirmative, 0 if
+   negative, and -1 if not matching.  */
+extern int rpmatch (const char *__response) __THROW __nonnull ((1)) __wur;
+#endif
+
+
+#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
+/* Parse comma separated suboption from *OPTIONP and match against
+   strings in TOKENS.  If found return index and set *VALUEP to
+   optional value introduced by an equal sign.  If the suboption is
+   not part of TOKENS return in *VALUEP beginning of unknown
+   suboption.  On exit *OPTIONP is set to the beginning of the next
+   token or at the terminating NUL character.  */
+extern int getsubopt (char **__restrict __optionp,
+		      char *const *__restrict __tokens,
+		      char **__restrict __valuep)
+     __THROW __nonnull ((1, 2, 3)) __wur;
+#endif
+
+
+/* X/Open pseudo terminal handling.  */
+
+#ifdef __USE_XOPEN2KXSI
+/* Return a master pseudo-terminal handle.  */
+extern int posix_openpt (int __oflag) __wur;
+#endif
+
+#ifdef __USE_XOPEN_EXTENDED
+/* The next four functions all take a master pseudo-tty fd and
+   perform an operation on the associated slave:  */
+
+/* Chown the slave to the calling user.  */
+extern int grantpt (int __fd) __THROW;
+
+/* Release an internal lock so the slave can be opened.
+   Call after grantpt().  */
+extern int unlockpt (int __fd) __THROW;
+
+/* Return the pathname of the pseudo terminal slave associated with
+   the master FD is open on, or NULL on errors.
+   The returned storage is good until the next call to this function.  */
+extern char *ptsname (int __fd) __THROW __wur;
+#endif
+
+#ifdef __USE_GNU
+/* Store at most BUFLEN characters of the pathname of the slave pseudo
+   terminal associated with the master FD is open on in BUF.
+   Return 0 on success, otherwise an error number.  */
+extern int ptsname_r (int __fd, char *__buf, size_t __buflen)
+     __THROW __nonnull ((2));
+
+/* Open a master pseudo terminal and return its file descriptor.  */
+extern int getpt (void);
+#endif
+
+#ifdef __USE_MISC
+/* Put the 1 minute, 5 minute and 15 minute load averages into the first
+   NELEM elements of LOADAVG.  Return the number written (never more than
+   three, but may be less than NELEM), or -1 if an error occurred.  */
+extern int getloadavg (double __loadavg[], int __nelem)
+     __THROW __nonnull ((1));
+#endif
+
+#if defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K
+/* Return the index into the active-logins file (utmp) for
+   the controlling terminal.  */
+extern int ttyslot (void) __THROW;
+#endif
+
+#include <bits/stdlib-float.h>
+
+/* Define some macros helping to catch buffer overflows.  */
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
+# include <bits/stdlib.h>
+#endif
+#ifdef __LDBL_COMPAT
+# include <bits/stdlib-ldbl.h>
+#endif
+
+__END_DECLS
+
+#endif /* stdlib.h  */