/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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

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

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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/*

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

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*/

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#ifndef _STDLIB_H

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#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION

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#include <bits/libc-header-start.h>

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

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#define __need_size_t

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#define __need_wchar_t

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#define __need_NULL

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#include <stddef.h>

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__BEGIN_DECLS

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#define _STDLIB_H 1

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#if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H

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

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# include <bits/waitflags.h>

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# include <bits/waitstatus.h>

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

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# define WEXITSTATUS(status) __WEXITSTATUS (status)

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# define WTERMSIG(status) __WTERMSIG (status)

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# define WSTOPSIG(status) __WSTOPSIG (status)

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# define WIFEXITED(status) __WIFEXITED (status)

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# define WIFSIGNALED(status) __WIFSIGNALED (status)

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# define WIFSTOPPED(status) __WIFSTOPPED (status)

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# ifdef __WIFCONTINUED

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# define WIFCONTINUED(status) __WIFCONTINUED (status)

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# endif

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#endif /* X/Open or XPG7 and <sys/wait.h> not included. */

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/* _FloatN API tests for enablement. */

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#include <bits/floatn.h>

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/* Returned by `div'. */

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typedef struct

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{

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int quot; /* Quotient. */

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int rem; /* Remainder. */

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} div_t;

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/* Returned by `ldiv'. */

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#ifndef __ldiv_t_defined

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typedef struct

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{

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long int quot; /* Quotient. */

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long int rem; /* Remainder. */

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} ldiv_t;

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# define __ldiv_t_defined 1

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#endif

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#if defined __USE_ISOC99 && !defined __lldiv_t_defined

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/* Returned by `lldiv'. */

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__extension__ typedef struct

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{

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long long int quot; /* Quotient. */

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long long int rem; /* Remainder. */

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} lldiv_t;

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# define __lldiv_t_defined 1

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#endif

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

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#define RAND_MAX 2147483647

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/* We define these the same for all machines.

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

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

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

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

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#define MB_CUR_MAX (__ctype_get_mb_cur_max ())

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extern size_t __ctype_get_mb_cur_max (void) __THROW __wur;

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

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extern double atof (const char *__nptr)

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__THROW __attribute_pure__ __nonnull ((1)) __wur;

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/* Convert a string to an integer. */

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extern int atoi (const char *__nptr)

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__THROW __attribute_pure__ __nonnull ((1)) __wur;

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

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extern long int atol (const char *__nptr)

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__THROW __attribute_pure__ __nonnull ((1)) __wur;

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#ifdef __USE_ISOC99

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

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

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__THROW __attribute_pure__ __nonnull ((1)) __wur;

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#endif

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

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extern double strtod (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#ifdef __USE_ISOC99

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

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extern float strtof (const char *__restrict __nptr,

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

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extern long double strtold (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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/* Likewise for '_FloatN' and '_FloatNx'. */

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#if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern _Float16 strtof16 (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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#if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern _Float32 strtof32 (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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#if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern _Float64 strtof64 (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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#if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern _Float128 strtof128 (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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#if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern _Float32x strtof32x (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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#if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern _Float64x strtof64x (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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#if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern _Float128x strtof128x (const char *__restrict __nptr,

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char **__restrict __endptr)

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__THROW __nonnull ((1));

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#endif

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

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extern long int strtol (const char *__restrict __nptr,

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char **__restrict __endptr, int __base)

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__THROW __nonnull ((1));

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

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

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char **__restrict __endptr, int __base)

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__THROW __nonnull ((1));

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#ifdef __USE_MISC

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

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__extension__

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

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char **__restrict __endptr, int __base)

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__THROW __nonnull ((1));

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

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__extension__

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

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char **__restrict __endptr, int __base)

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__THROW __nonnull ((1));

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#endif /* Use misc. */

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#ifdef __USE_ISOC99

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

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__extension__

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

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char **__restrict __endptr, int __base)

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__THROW __nonnull ((1));

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

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__extension__

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

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char **__restrict __endptr, int __base)

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__THROW __nonnull ((1));

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

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

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#if __GLIBC_USE (IEC_60559_BFP_EXT)

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extern int strfromd (char *__dest, size_t __size, const char *__format,

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double __f)

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__THROW __nonnull ((3));

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extern int strfromf (char *__dest, size_t __size, const char *__format,

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float __f)

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__THROW __nonnull ((3));

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extern int strfroml (char *__dest, size_t __size, const char *__format,

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long double __f)

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__THROW __nonnull ((3));

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#endif

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#if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern int strfromf16 (char *__dest, size_t __size, const char * __format,

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_Float16 __f)

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__THROW __nonnull ((3));

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#endif

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#if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern int strfromf32 (char *__dest, size_t __size, const char * __format,

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_Float32 __f)

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__THROW __nonnull ((3));

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#endif

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#if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern int strfromf64 (char *__dest, size_t __size, const char * __format,

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_Float64 __f)

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__THROW __nonnull ((3));

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#endif

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#if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern int strfromf128 (char *__dest, size_t __size, const char * __format,

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_Float128 __f)

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__THROW __nonnull ((3));

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#endif

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#if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern int strfromf32x (char *__dest, size_t __size, const char * __format,

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_Float32x __f)

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__THROW __nonnull ((3));

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#endif

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#if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern int strfromf64x (char *__dest, size_t __size, const char * __format,

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_Float64x __f)

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__THROW __nonnull ((3));

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#endif

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#if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT)

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extern int strfromf128x (char *__dest, size_t __size, const char * __format,

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_Float128x __f)

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__THROW __nonnull ((3));

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#endif

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#ifdef __USE_GNU

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

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use as an additional parameter. These are GNU extensions inspired

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by the POSIX.1-2008 extended locale API. */

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# include <bits/types/locale_t.h>

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extern long int strtol_l (const char *__restrict __nptr,

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char **__restrict __endptr, int __base,

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locale_t __loc) __THROW __nonnull ((1, 4));

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

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char **__restrict __endptr,

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int __base, locale_t __loc)

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__THROW __nonnull ((1, 4));

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__extension__

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

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char **__restrict __endptr, int __base,

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locale_t __loc)

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__THROW __nonnull ((1, 4));

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__extension__

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

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char **__restrict __endptr,

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int __base, locale_t __loc)

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__THROW __nonnull ((1, 4));

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extern double strtod_l (const char *__restrict __nptr,

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char **__restrict __endptr, locale_t __loc)

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__THROW __nonnull ((1, 3));

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extern float strtof_l (const char *__restrict __nptr,

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char **__restrict __endptr, locale_t __loc)

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__THROW __nonnull ((1, 3));

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extern long double strtold_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# if __HAVE_FLOAT16

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extern _Float16 strtof16_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# endif

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# if __HAVE_FLOAT32

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extern _Float32 strtof32_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# endif

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# if __HAVE_FLOAT64

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extern _Float64 strtof64_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# endif

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# if __HAVE_FLOAT128

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extern _Float128 strtof128_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# endif

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# if __HAVE_FLOAT32X

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extern _Float32x strtof32x_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# endif

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# if __HAVE_FLOAT64X

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extern _Float64x strtof64x_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# endif

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# if __HAVE_FLOAT128X

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extern _Float128x strtof128x_l (const char *__restrict __nptr,

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char **__restrict __endptr,

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locale_t __loc)

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__THROW __nonnull ((1, 3));

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# endif

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#endif /* GNU */

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#ifdef __USE_EXTERN_INLINES

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__extern_inline int

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__NTH (atoi (const char *__nptr))

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{

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return (int) strtol (__nptr, (char **) NULL, 10);

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}

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__extern_inline long int

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__NTH (atol (const char *__nptr))

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{

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return strtol (__nptr, (char **) NULL, 10);

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}

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# ifdef __USE_ISOC99

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__extension__ __extern_inline long long int

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__NTH (atoll (const char *__nptr))

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{

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return strtoll (__nptr, (char **) NULL, 10);

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}

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# endif

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#endif /* Optimizing and Inlining. */

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#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED

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

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

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next call. */

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

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

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extern long int a64l (const char *__s)

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__THROW __attribute_pure__ __nonnull ((1)) __wur;

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

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#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED

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

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

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

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

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

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

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extern long int random (void) __THROW;

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

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extern void srandom (unsigned int __seed) __THROW;

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

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

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

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

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

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size_t __statelen) __THROW __nonnull ((2));

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

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

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

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# ifdef __USE_MISC

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

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These functions all use the following data structure to contain

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state, rather than global state variables. */

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struct random_data

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{

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int32_t *fptr; /* Front pointer. */

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int32_t *rptr; /* Rear pointer. */

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

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

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

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

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

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};

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[432] Fix | Delete

extern int random_r (struct random_data *__restrict __buf,

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

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[435] Fix | Delete

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

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__THROW __nonnull ((2));

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[438] Fix | Delete

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

[439] Fix | Delete

size_t __statelen,

[440] Fix | Delete

struct random_data *__restrict __buf)

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__THROW __nonnull ((2, 4));

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[443] Fix | Delete

extern int setstate_r (char *__restrict __statebuf,

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struct random_data *__restrict __buf)

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__THROW __nonnull ((1, 2));

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# endif /* Use misc. */

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

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[449] Fix | Delete

[450] Fix | Delete

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

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extern int rand (void) __THROW;

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

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extern void srand (unsigned int __seed) __THROW;

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[455] Fix | Delete

#ifdef __USE_POSIX199506

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

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extern int rand_r (unsigned int *__seed) __THROW;

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#endif

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[460] Fix | Delete

[461] Fix | Delete

#if defined __USE_MISC || defined __USE_XOPEN

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

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

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extern double drand48 (void) __THROW;

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

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[468] Fix | Delete

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

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extern long int lrand48 (void) __THROW;

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

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__THROW __nonnull ((1));

[472] Fix | Delete

[473] Fix | Delete

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

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extern long int mrand48 (void) __THROW;

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

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__THROW __nonnull ((1));

[477] Fix | Delete

[478] Fix | Delete

/* Seed random number generator. */

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extern void srand48 (long int __seedval) __THROW;

[480] Fix | Delete

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

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__THROW __nonnull ((1));

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

[483] Fix | Delete

[484] Fix | Delete

# ifdef __USE_MISC

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

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

[487] Fix | Delete

have to allocate objects of this type. */

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struct drand48_data

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{

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

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

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

[493] Fix | Delete

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

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__extension__ unsigned long long int __a; /* Factor in congruential

[495] Fix | Delete

formula. */

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};

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[498] Fix | Delete

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

[499] Fix | Delete