1/* Copyright (C) 1991-2022 Free Software Foundation, Inc. 
2 Copyright The GNU Toolchain Authors. 
3 This file is part of the GNU C Library. 
4 
5 The GNU C Library is free software; you can redistribute it and/or 
6 modify it under the terms of the GNU Lesser General Public 
7 License as published by the Free Software Foundation; either 
8 version 2.1 of the License, or (at your option) any later version. 
9 
10 The GNU C Library is distributed in the hope that it will be useful, 
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
13 Lesser General Public License for more details. 
14 
15 You should have received a copy of the GNU Lesser General Public 
16 License along with the GNU C Library; if not, see 
17 <https://www.gnu.org/licenses/>. */ 
18 
19/* 
20 * ISO C99 Standard: 7.20 General utilities <stdlib.h> 
21 */ 
22 
23#ifndef _STDLIB_H 
24 
25#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION 
26#include <bits/libc-header-start.h> 
27 
28/* Get size_t, wchar_t and NULL from <stddef.h>. */ 
29#define __need_size_t 
30#define __need_wchar_t 
31#define __need_NULL 
32#include <stddef.h> 
33 
34__BEGIN_DECLS 
35 
36#define _STDLIB_H 1 
37 
38#if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H 
39/* XPG requires a few symbols from <sys/wait.h> being defined. */ 
40# include <bits/waitflags.h> 
41# include <bits/waitstatus.h> 
42 
43/* Define the macros <sys/wait.h> also would define this way. */ 
44# define WEXITSTATUS(status) __WEXITSTATUS (status) 
45# define WTERMSIG(status) __WTERMSIG (status) 
46# define WSTOPSIG(status) __WSTOPSIG (status) 
47# define WIFEXITED(status) __WIFEXITED (status) 
48# define WIFSIGNALED(status) __WIFSIGNALED (status) 
49# define WIFSTOPPED(status) __WIFSTOPPED (status) 
50# ifdef __WIFCONTINUED 
51# define WIFCONTINUED(status) __WIFCONTINUED (status) 
52# endif 
53#endif /* X/Open or XPG7 and <sys/wait.h> not included. */ 
54 
55/* _FloatN API tests for enablement. */ 
56#include <bits/floatn.h> 
57 
58/* Returned by `div'. */ 
59typedef struct 
60 { 
61 int quot; /* Quotient. */ 
62 int rem; /* Remainder. */ 
63 } div_t; 
64 
65/* Returned by `ldiv'. */ 
66#ifndef __ldiv_t_defined 
67typedef struct 
68 { 
69 long int quot; /* Quotient. */ 
70 long int rem; /* Remainder. */ 
71 } ldiv_t; 
72# define __ldiv_t_defined 1 
73#endif 
74 
75#if defined __USE_ISOC99 && !defined __lldiv_t_defined 
76/* Returned by `lldiv'. */ 
77__extension__ typedef struct 
78 { 
79 long long int quot; /* Quotient. */ 
80 long long int rem; /* Remainder. */ 
81 } lldiv_t; 
82# define __lldiv_t_defined 1 
83#endif 
84 
85 
86/* The largest number rand will return (same as INT_MAX). */ 
87#define RAND_MAX 2147483647 
88 
89 
90/* We define these the same for all machines. 
91 Changes from this to the outside world should be done in `_exit'. */ 
92#define EXIT_FAILURE 1 /* Failing exit status. */ 
93#define EXIT_SUCCESS 0 /* Successful exit status. */ 
94 
95 
96/* Maximum length of a multibyte character in the current locale. */ 
97#define MB_CUR_MAX (__ctype_get_mb_cur_max ()) 
98extern size_t __ctype_get_mb_cur_max (void) __THROW __wur; 
99 
100 
101/* Convert a string to a floating-point number. */ 
102extern double atof (const char *__nptr) 
103 __THROW __attribute_pure__ __nonnull ((1)) __wur; 
104/* Convert a string to an integer. */ 
105extern int atoi (const char *__nptr) 
106 __THROW __attribute_pure__ __nonnull ((1)) __wur; 
107/* Convert a string to a long integer. */ 
108extern long int atol (const char *__nptr) 
109 __THROW __attribute_pure__ __nonnull ((1)) __wur; 
110 
111#ifdef __USE_ISOC99 
112/* Convert a string to a long long integer. */ 
113__extension__ extern long long int atoll (const char *__nptr) 
114 __THROW __attribute_pure__ __nonnull ((1)) __wur; 
115#endif 
116 
117/* Convert a string to a floating-point number. */ 
118extern double strtod (const char *__restrict __nptr, 
119 char **__restrict __endptr) 
120 __THROW __nonnull ((1)); 
121 
122#ifdef __USE_ISOC99 
123/* Likewise for `float' and `long double' sizes of floating-point numbers. */ 
124extern float strtof (const char *__restrict __nptr, 
125 char **__restrict __endptr) __THROW __nonnull ((1)); 
126 
127extern long double strtold (const char *__restrict __nptr, 
128 char **__restrict __endptr) 
129 __THROW __nonnull ((1)); 
130#endif 
131 
132/* Likewise for '_FloatN' and '_FloatNx'. */ 
133 
134#if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
135extern _Float16 strtof16 (const char *__restrict __nptr, 
136 char **__restrict __endptr) 
137 __THROW __nonnull ((1)); 
138#endif 
139 
140#if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
141extern _Float32 strtof32 (const char *__restrict __nptr, 
142 char **__restrict __endptr) 
143 __THROW __nonnull ((1)); 
144#endif 
145 
146#if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
147extern _Float64 strtof64 (const char *__restrict __nptr, 
148 char **__restrict __endptr) 
149 __THROW __nonnull ((1)); 
150#endif 
151 
152#if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
153extern _Float128 strtof128 (const char *__restrict __nptr, 
154 char **__restrict __endptr) 
155 __THROW __nonnull ((1)); 
156#endif 
157 
158#if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT) 
159extern _Float32x strtof32x (const char *__restrict __nptr, 
160 char **__restrict __endptr) 
161 __THROW __nonnull ((1)); 
162#endif 
163 
164#if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT) 
165extern _Float64x strtof64x (const char *__restrict __nptr, 
166 char **__restrict __endptr) 
167 __THROW __nonnull ((1)); 
168#endif 
169 
170#if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT) 
171extern _Float128x strtof128x (const char *__restrict __nptr, 
172 char **__restrict __endptr) 
173 __THROW __nonnull ((1)); 
174#endif 
175 
176/* Convert a string to a long integer. */ 
177extern long int strtol (const char *__restrict __nptr, 
178 char **__restrict __endptr, int __base) 
179 __THROW __nonnull ((1)); 
180/* Convert a string to an unsigned long integer. */ 
181extern unsigned long int strtoul (const char *__restrict __nptr, 
182 char **__restrict __endptr, int __base) 
183 __THROW __nonnull ((1)); 
184 
185#ifdef __USE_MISC 
186/* Convert a string to a quadword integer. */ 
187__extension__ 
188extern long long int strtoq (const char *__restrict __nptr, 
189 char **__restrict __endptr, int __base) 
190 __THROW __nonnull ((1)); 
191/* Convert a string to an unsigned quadword integer. */ 
192__extension__ 
193extern unsigned long long int strtouq (const char *__restrict __nptr, 
194 char **__restrict __endptr, int __base) 
195 __THROW __nonnull ((1)); 
196#endif /* Use misc. */ 
197 
198#ifdef __USE_ISOC99 
199/* Convert a string to a quadword integer. */ 
200__extension__ 
201extern long long int strtoll (const char *__restrict __nptr, 
202 char **__restrict __endptr, int __base) 
203 __THROW __nonnull ((1)); 
204/* Convert a string to an unsigned quadword integer. */ 
205__extension__ 
206extern unsigned long long int strtoull (const char *__restrict __nptr, 
207 char **__restrict __endptr, int __base) 
208 __THROW __nonnull ((1)); 
209#endif /* ISO C99 or use MISC. */ 
210 
211/* Convert a floating-point number to a string. */ 
212#if __GLIBC_USE (IEC_60559_BFP_EXT_C2X) 
213extern int strfromd (char *__dest, size_t __size, const char *__format, 
214 double __f) 
215 __THROW __nonnull ((3)); 
216 
217extern int strfromf (char *__dest, size_t __size, const char *__format, 
218 float __f) 
219 __THROW __nonnull ((3)); 
220 
221extern int strfroml (char *__dest, size_t __size, const char *__format, 
222 long double __f) 
223 __THROW __nonnull ((3)); 
224#endif 
225 
226#if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
227extern int strfromf16 (char *__dest, size_t __size, const char * __format, 
228 _Float16 __f) 
229 __THROW __nonnull ((3)); 
230#endif 
231 
232#if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
233extern int strfromf32 (char *__dest, size_t __size, const char * __format, 
234 _Float32 __f) 
235 __THROW __nonnull ((3)); 
236#endif 
237 
238#if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
239extern int strfromf64 (char *__dest, size_t __size, const char * __format, 
240 _Float64 __f) 
241 __THROW __nonnull ((3)); 
242#endif 
243 
244#if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) 
245extern int strfromf128 (char *__dest, size_t __size, const char * __format, 
246 _Float128 __f) 
247 __THROW __nonnull ((3)); 
248#endif 
249 
250#if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT) 
251extern int strfromf32x (char *__dest, size_t __size, const char * __format, 
252 _Float32x __f) 
253 __THROW __nonnull ((3)); 
254#endif 
255 
256#if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT) 
257extern int strfromf64x (char *__dest, size_t __size, const char * __format, 
258 _Float64x __f) 
259 __THROW __nonnull ((3)); 
260#endif 
261 
262#if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT) 
263extern int strfromf128x (char *__dest, size_t __size, const char * __format, 
264 _Float128x __f) 
265 __THROW __nonnull ((3)); 
266#endif 
267 
268 
269#ifdef __USE_GNU 
270/* Parallel versions of the functions above which take the locale to 
271 use as an additional parameter. These are GNU extensions inspired 
272 by the POSIX.1-2008 extended locale API. */ 
273# include <bits/types/locale_t.h> 
274 
275extern long int strtol_l (const char *__restrict __nptr, 
276 char **__restrict __endptr, int __base, 
277 locale_t __loc) __THROW __nonnull ((1, 4)); 
278 
279extern unsigned long int strtoul_l (const char *__restrict __nptr, 
280 char **__restrict __endptr, 
281 int __base, locale_t __loc) 
282 __THROW __nonnull ((1, 4)); 
283 
284__extension__ 
285extern long long int strtoll_l (const char *__restrict __nptr, 
286 char **__restrict __endptr, int __base, 
287 locale_t __loc) 
288 __THROW __nonnull ((1, 4)); 
289 
290__extension__ 
291extern unsigned long long int strtoull_l (const char *__restrict __nptr, 
292 char **__restrict __endptr, 
293 int __base, locale_t __loc) 
294 __THROW __nonnull ((1, 4)); 
295 
296extern double strtod_l (const char *__restrict __nptr, 
297 char **__restrict __endptr, locale_t __loc) 
298 __THROW __nonnull ((1, 3)); 
299 
300extern float strtof_l (const char *__restrict __nptr, 
301 char **__restrict __endptr, locale_t __loc) 
302 __THROW __nonnull ((1, 3)); 
303 
304extern long double strtold_l (const char *__restrict __nptr, 
305 char **__restrict __endptr, 
306 locale_t __loc) 
307 __THROW __nonnull ((1, 3)); 
308 
309# if __HAVE_FLOAT16 
310extern _Float16 strtof16_l (const char *__restrict __nptr, 
311 char **__restrict __endptr, 
312 locale_t __loc) 
313 __THROW __nonnull ((1, 3)); 
314# endif 
315 
316# if __HAVE_FLOAT32 
317extern _Float32 strtof32_l (const char *__restrict __nptr, 
318 char **__restrict __endptr, 
319 locale_t __loc) 
320 __THROW __nonnull ((1, 3)); 
321# endif 
322 
323# if __HAVE_FLOAT64 
324extern _Float64 strtof64_l (const char *__restrict __nptr, 
325 char **__restrict __endptr, 
326 locale_t __loc) 
327 __THROW __nonnull ((1, 3)); 
328# endif 
329 
330# if __HAVE_FLOAT128 
331extern _Float128 strtof128_l (const char *__restrict __nptr, 
332 char **__restrict __endptr, 
333 locale_t __loc) 
334 __THROW __nonnull ((1, 3)); 
335# endif 
336 
337# if __HAVE_FLOAT32X 
338extern _Float32x strtof32x_l (const char *__restrict __nptr, 
339 char **__restrict __endptr, 
340 locale_t __loc) 
341 __THROW __nonnull ((1, 3)); 
342# endif 
343 
344# if __HAVE_FLOAT64X 
345extern _Float64x strtof64x_l (const char *__restrict __nptr, 
346 char **__restrict __endptr, 
347 locale_t __loc) 
348 __THROW __nonnull ((1, 3)); 
349# endif 
350 
351# if __HAVE_FLOAT128X 
352extern _Float128x strtof128x_l (const char *__restrict __nptr, 
353 char **__restrict __endptr, 
354 locale_t __loc) 
355 __THROW __nonnull ((1, 3)); 
356# endif 
357#endif /* GNU */ 
358 
359 
360#ifdef __USE_EXTERN_INLINES 
361__extern_inline int 
362__NTH (atoi (const char *__nptr)) 
363{ 
364 return (int) strtol (__nptr, (char **) NULL, 10); 
365} 
366__extern_inline long int 
367__NTH (atol (const char *__nptr)) 
368{ 
369 return strtol (__nptr, (char **) NULL, 10); 
370} 
371 
372# ifdef __USE_ISOC99 
373__extension__ __extern_inline long long int 
374__NTH (atoll (const char *__nptr)) 
375{ 
376 return strtoll (__nptr, (char **) NULL, 10); 
377} 
378# endif 
379#endif /* Optimizing and Inlining. */ 
380 
381 
382#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED 
383/* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant 
384 digit first. Returns a pointer to static storage overwritten by the 
385 next call. */ 
386extern char *l64a (long int __n) __THROW __wur; 
387 
388/* Read a number from a string S in base 64 as above. */ 
389extern long int a64l (const char *__s) 
390 __THROW __attribute_pure__ __nonnull ((1)) __wur; 
391 
392#endif /* Use misc || extended X/Open. */ 
393 
394#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED 
395# include <sys/types.h> /* we need int32_t... */ 
396 
397/* These are the functions that actually do things. The `random', `srandom', 
398 `initstate' and `setstate' functions are those from BSD Unices. 
399 The `rand' and `srand' functions are required by the ANSI standard. 
400 We provide both interfaces to the same random number generator. */ 
401/* Return a random long integer between 0 and 2^31-1 inclusive. */ 
402extern long int random (void) __THROW; 
403 
404/* Seed the random number generator with the given number. */ 
405extern void srandom (unsigned int __seed) __THROW; 
406 
407/* Initialize the random number generator to use state buffer STATEBUF, 
408 of length STATELEN, and seed it with SEED. Optimal lengths are 8, 16, 
409 32, 64, 128 and 256, the bigger the better; values less than 8 will 
410 cause an error and values greater than 256 will be rounded down. */ 
411extern char *initstate (unsigned int __seed, char *__statebuf, 
412 size_t __statelen) __THROW __nonnull ((2)); 
413 
414/* Switch the random number generator to state buffer STATEBUF, 
415 which should have been previously initialized by `initstate'. */ 
416extern char *setstate (char *__statebuf) __THROW __nonnull ((1)); 
417 
418 
419# ifdef __USE_MISC 
420/* Reentrant versions of the `random' family of functions. 
421 These functions all use the following data structure to contain 
422 state, rather than global state variables. */ 
423 
424struct random_data 
425 { 
426 int32_t *fptr; /* Front pointer. */ 
427 int32_t *rptr; /* Rear pointer. */ 
428 int32_t *state; /* Array of state values. */ 
429 int rand_type; /* Type of random number generator. */ 
430 int rand_deg; /* Degree of random number generator. */ 
431 int rand_sep; /* Distance between front and rear. */ 
432 int32_t *end_ptr; /* Pointer behind state table. */ 
433 }; 
434 
435extern int random_r (struct random_data *__restrict __buf, 
436 int32_t *__restrict __result) __THROW __nonnull ((1, 2)); 
437 
438extern int srandom_r (unsigned int __seed, struct random_data *__buf) 
439 __THROW __nonnull ((2)); 
440 
441extern int initstate_r (unsigned int __seed, char *__restrict __statebuf, 
442 size_t __statelen, 
443 struct random_data *__restrict __buf) 
444 __THROW __nonnull ((2, 4)); 
445 
446extern int setstate_r (char *__restrict __statebuf, 
447 struct random_data *__restrict __buf) 
448 __THROW __nonnull ((1, 2)); 
449# endif /* Use misc. */ 
450#endif /* Use extended X/Open || misc. */ 
451 
452 
453/* Return a random integer between 0 and RAND_MAX inclusive. */ 
454extern int rand (void) __THROW; 
455/* Seed the random number generator with the given number. */ 
456extern void srand (unsigned int __seed) __THROW; 
457 
458#ifdef __USE_POSIX199506 
459/* Reentrant interface according to POSIX.1. */ 
460extern int rand_r (unsigned int *__seed) __THROW; 
461#endif 
462 
463 
464#if defined __USE_MISC || defined __USE_XOPEN 
465/* System V style 48-bit random number generator functions. */ 
466 
467/* Return non-negative, double-precision floating-point value in [0.0,1.0). */ 
468extern double drand48 (void) __THROW; 
469extern double erand48 (unsigned short int __xsubi[3]) __THROW __nonnull ((1)); 
470 
471/* Return non-negative, long integer in [0,2^31). */ 
472extern long int lrand48 (void) __THROW; 
473extern long int nrand48 (unsigned short int __xsubi[3]) 
474 __THROW __nonnull ((1)); 
475 
476/* Return signed, long integers in [-2^31,2^31). */ 
477extern long int mrand48 (void) __THROW; 
478extern long int jrand48 (unsigned short int __xsubi[3]) 
479 __THROW __nonnull ((1)); 
480 
481/* Seed random number generator. */ 
482extern void srand48 (long int __seedval) __THROW; 
483extern unsigned short int *seed48 (unsigned short int __seed16v[3]) 
484 __THROW __nonnull ((1)); 
485extern void lcong48 (unsigned short int __param[7]) __THROW __nonnull ((1)); 
486 
487# ifdef __USE_MISC 
488/* Data structure for communication with thread safe versions. This 
489 type is to be regarded as opaque. It's only exported because users 
490 have to allocate objects of this type. */ 
491struct drand48_data 
492 { 
493 unsigned short int __x[3]; /* Current state. */ 
494 unsigned short int __old_x[3]; /* Old state. */ 
495 unsigned short int __c; /* Additive const. in congruential formula. */ 
496 unsigned short int __init; /* Flag for initializing. */ 
497 __extension__ unsigned long long int __a; /* Factor in congruential 
498 formula. */ 
499 }; 
500 
501/* Return non-negative, double-precision floating-point value in [0.0,1.0). */ 
502extern int drand48_r (struct drand48_data *__restrict __buffer, 
503 double *__restrict __result) __THROW __nonnull ((1, 2)); 
504extern int erand48_r (unsigned short int __xsubi[3], 
505 struct drand48_data *__restrict __buffer, 
506 double *__restrict __result) __THROW __nonnull ((1, 2)); 
507 
508/* Return non-negative, long integer in [0,2^31). */ 
509extern int lrand48_r (struct drand48_data *__restrict __buffer, 
510 long int *__restrict __result) 
511 __THROW __nonnull ((1, 2)); 
512extern int nrand48_r (unsigned short int __xsubi[3], 
513 struct drand48_data *__restrict __buffer, 
514 long int *__restrict __result) 
515 __THROW __nonnull ((1, 2)); 
516 
517/* Return signed, long integers in [-2^31,2^31). */ 
518extern int mrand48_r (struct drand48_data *__restrict __buffer, 
519 long int *__restrict __result) 
520 __THROW __nonnull ((1, 2)); 
521extern int jrand48_r (unsigned short int __xsubi[3], 
522 struct drand48_data *__restrict __buffer, 
523 long int *__restrict __result) 
524 __THROW __nonnull ((1, 2)); 
525 
526/* Seed random number generator. */ 
527extern int srand48_r (long int __seedval, struct drand48_data *__buffer) 
528 __THROW __nonnull ((2)); 
529 
530extern int seed48_r (unsigned short int __seed16v[3], 
531 struct drand48_data *__buffer) __THROW __nonnull ((1, 2)); 
532 
533extern int lcong48_r (unsigned short int __param[7], 
534 struct drand48_data *__buffer) 
535 __THROW __nonnull ((1, 2)); 
536# endif /* Use misc. */ 
537#endif /* Use misc or X/Open. */ 
538 
539/* Allocate SIZE bytes of memory. */ 
540extern void *malloc (size_t __size) __THROW __attribute_malloc__ 
541 __attribute_alloc_size__ ((1)) __wur; 
542/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */ 
543extern void *calloc (size_t __nmemb, size_t __size) 
544 __THROW __attribute_malloc__ __attribute_alloc_size__ ((1, 2)) __wur; 
545 
546/* Re-allocate the previously allocated block 
547 in PTR, making the new block SIZE bytes long. */ 
548/* __attribute_malloc__ is not used, because if realloc returns 
549 the same pointer that was passed to it, aliasing needs to be allowed 
550 between objects pointed by the old and new pointers. */ 
551extern void *realloc (void *__ptr, size_t __size) 
552 __THROW __attribute_warn_unused_result__ __attribute_alloc_size__ ((2)); 
553 
554/* Free a block allocated by `malloc', `realloc' or `calloc'. */ 
555extern void free (void *__ptr) __THROW; 
556 
557#ifdef __USE_MISC 
558/* Re-allocate the previously allocated block in PTR, making the new 
559 block large enough for NMEMB elements of SIZE bytes each. */ 
560/* __attribute_malloc__ is not used, because if reallocarray returns 
561 the same pointer that was passed to it, aliasing needs to be allowed 
562 between objects pointed by the old and new pointers. */ 
563extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size) 
564 __THROW __attribute_warn_unused_result__ 
565 __attribute_alloc_size__ ((2, 3)) 
566 __attr_dealloc_free; 
567 
568/* Add reallocarray as its own deallocator. */ 
569extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size) 
570 __THROW __attr_dealloc (reallocarray, 1); 
571#endif 
572 
573#ifdef __USE_MISC 
574# include <alloca.h> 
575#endif /* Use misc. */ 
576 
577#if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K) \ 
578 || defined __USE_MISC 
579/* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */ 
580extern void *valloc (size_t __size) __THROW __attribute_malloc__ 
581 __attribute_alloc_size__ ((1)) __wur; 
582#endif 
583 
584#ifdef __USE_XOPEN2K 
585/* Allocate memory of SIZE bytes with an alignment of ALIGNMENT. */ 
586extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size) 
587 __THROW __nonnull ((1)) __wur; 
588#endif 
589 
590#ifdef __USE_ISOC11 
591/* ISO C variant of aligned allocation. */ 
592extern void *aligned_alloc (size_t __alignment, size_t __size) 
593 __THROW __attribute_malloc__ __attribute_alloc_align__ ((1)) 
594 __attribute_alloc_size__ ((2)) __wur; 
595#endif 
596 
597/* Abort execution and generate a core-dump. */ 
598extern void abort (void) __THROW __attribute__ ((__noreturn__)); 
599 
600 
601/* Register a function to be called when `exit' is called. */ 
602extern int atexit (void (*__func) (void)) __THROW __nonnull ((1)); 
603 
604#if defined __USE_ISOC11 || defined __USE_ISOCXX11 
605/* Register a function to be called when `quick_exit' is called. */ 
606# ifdef __cplusplus 
607extern "C++" int at_quick_exit (void (*__func) (void)) 
608 __THROW __asm ("at_quick_exit") __nonnull ((1)); 
609# else 
610extern int at_quick_exit (void (*__func) (void)) __THROW __nonnull ((1)); 
611# endif 
612#endif 
613 
614#ifdef __USE_MISC 
615/* Register a function to be called with the status 
616 given to `exit' and the given argument. */ 
617extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg) 
618 __THROW __nonnull ((1)); 
619#endif 
620 
621/* Call all functions registered with `atexit' and `on_exit', 
622 in the reverse of the order in which they were registered, 
623 perform stdio cleanup, and terminate program execution with STATUS. */ 
624extern void exit (int __status) __THROW __attribute__ ((__noreturn__)); 
625 
626#if defined __USE_ISOC11 || defined __USE_ISOCXX11 
627/* Call all functions registered with `at_quick_exit' in the reverse 
628 of the order in which they were registered and terminate program 
629 execution with STATUS. */ 
630extern void quick_exit (int __status) __THROW __attribute__ ((__noreturn__)); 
631#endif 
632 
633#ifdef __USE_ISOC99 
634/* Terminate the program with STATUS without calling any of the 
635 functions registered with `atexit' or `on_exit'. */ 
636extern void _Exit (int __status) __THROW __attribute__ ((__noreturn__)); 
637#endif 
638 
639 
640/* Return the value of envariable NAME, or NULL if it doesn't exist. */ 
641extern char *getenv (const char *__name) __THROW __nonnull ((1)) __wur; 
642 
643#ifdef __USE_GNU 
644/* This function is similar to the above but returns NULL if the 
645 programs is running with SUID or SGID enabled. */ 
646extern char *secure_getenv (const char *__name) 
647 __THROW __nonnull ((1)) __wur; 
648#endif 
649 
650#if defined __USE_MISC || defined __USE_XOPEN 
651/* The SVID says this is in <stdio.h>, but this seems a better place. */ 
652/* Put STRING, which is of the form "NAME=VALUE", in the environment. 
653 If there is no `=', remove NAME from the environment. */ 
654extern int putenv (char *__string) __THROW __nonnull ((1)); 
655#endif 
656 
657#ifdef __USE_XOPEN2K 
658/* Set NAME to VALUE in the environment. 
659 If REPLACE is nonzero, overwrite an existing value. */ 
660extern int setenv (const char *__name, const char *__value, int __replace) 
661 __THROW __nonnull ((2)); 
662 
663/* Remove the variable NAME from the environment. */ 
664extern int unsetenv (const char *__name) __THROW __nonnull ((1)); 
665#endif 
666 
667#ifdef __USE_MISC 
668/* The `clearenv' was planned to be added to POSIX.1 but probably 
669 never made it. Nevertheless the POSIX.9 standard (POSIX bindings 
670 for Fortran 77) requires this function. */ 
671extern int clearenv (void) __THROW; 
672#endif 
673 
674 
675#if defined __USE_MISC \ 
676 || (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) 
677/* Generate a unique temporary file name from TEMPLATE. 
678 The last six characters of TEMPLATE must be "XXXXXX"; 
679 they are replaced with a string that makes the file name unique. 
680 Always returns TEMPLATE, it's either a temporary file name or a null 
681 string if it cannot get a unique file name. */ 
682extern char *mktemp (char *__template) __THROW __nonnull ((1)); 
683#endif 
684 
685#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 
686/* Generate a unique temporary file name from TEMPLATE. 
687 The last six characters of TEMPLATE must be "XXXXXX"; 
688 they are replaced with a string that makes the filename unique. 
689 Returns a file descriptor open on the file for reading and writing, 
690 or -1 if it cannot create a uniquely-named file. 
691 
692 This function is a possible cancellation point and therefore not 
693 marked with __THROW. */ 
694# ifndef __USE_FILE_OFFSET64 
695extern int mkstemp (char *__template) __nonnull ((1)) __wur; 
696# else 
697# ifdef __REDIRECT 
698extern int __REDIRECT (mkstemp, (char *__template), mkstemp64) 
699 __nonnull ((1)) __wur; 
700# else 
701# define mkstemp mkstemp64 
702# endif 
703# endif 
704# ifdef __USE_LARGEFILE64 
705extern int mkstemp64 (char *__template) __nonnull ((1)) __wur; 
706# endif 
707#endif 
708 
709#ifdef __USE_MISC 
710/* Similar to mkstemp, but the template can have a suffix after the 
711 XXXXXX. The length of the suffix is specified in the second 
712 parameter. 
713 
714 This function is a possible cancellation point and therefore not 
715 marked with __THROW. */ 
716# ifndef __USE_FILE_OFFSET64 
717extern int mkstemps (char *__template, int __suffixlen) __nonnull ((1)) __wur; 
718# else 
719# ifdef __REDIRECT 
720extern int __REDIRECT (mkstemps, (char *__template, int __suffixlen), 
721 mkstemps64) __nonnull ((1)) __wur; 
722# else 
723# define mkstemps mkstemps64 
724# endif 
725# endif 
726# ifdef __USE_LARGEFILE64 
727extern int mkstemps64 (char *__template, int __suffixlen) 
728 __nonnull ((1)) __wur; 
729# endif 
730#endif 
731 
732#ifdef __USE_XOPEN2K8 
733/* Create a unique temporary directory from TEMPLATE. 
734 The last six characters of TEMPLATE must be "XXXXXX"; 
735 they are replaced with a string that makes the directory name unique. 
736 Returns TEMPLATE, or a null pointer if it cannot get a unique name. 
737 The directory is created mode 700. */ 
738extern char *mkdtemp (char *__template) __THROW __nonnull ((1)) __wur; 
739#endif 
740 
741#ifdef __USE_GNU 
742/* Generate a unique temporary file name from TEMPLATE similar to 
743 mkstemp. But allow the caller to pass additional flags which are 
744 used in the open call to create the file.. 
745 
746 This function is a possible cancellation point and therefore not 
747 marked with __THROW. */ 
748# ifndef __USE_FILE_OFFSET64 
749extern int mkostemp (char *__template, int __flags) __nonnull ((1)) __wur; 
750# else 
751# ifdef __REDIRECT 
752extern int __REDIRECT (mkostemp, (char *__template, int __flags), mkostemp64) 
753 __nonnull ((1)) __wur; 
754# else 
755# define mkostemp mkostemp64 
756# endif 
757# endif 
758# ifdef __USE_LARGEFILE64 
759extern int mkostemp64 (char *__template, int __flags) __nonnull ((1)) __wur; 
760# endif 
761 
762/* Similar to mkostemp, but the template can have a suffix after the 
763 XXXXXX. The length of the suffix is specified in the second 
764 parameter. 
765 
766 This function is a possible cancellation point and therefore not 
767 marked with __THROW. */ 
768# ifndef __USE_FILE_OFFSET64 
769extern int mkostemps (char *__template, int __suffixlen, int __flags) 
770 __nonnull ((1)) __wur; 
771# else 
772# ifdef __REDIRECT 
773extern int __REDIRECT (mkostemps, (char *__template, int __suffixlen, 
774 int __flags), mkostemps64) 
775 __nonnull ((1)) __wur; 
776# else 
777# define mkostemps mkostemps64 
778# endif 
779# endif 
780# ifdef __USE_LARGEFILE64 
781extern int mkostemps64 (char *__template, int __suffixlen, int __flags) 
782 __nonnull ((1)) __wur; 
783# endif 
784#endif 
785 
786 
787/* Execute the given line as a shell command. 
788 
789 This function is a cancellation point and therefore not marked with 
790 __THROW. */ 
791extern int system (const char *__command) __wur; 
792 
793 
794#ifdef __USE_GNU 
795/* Return a malloc'd string containing the canonical absolute name of the 
796 existing named file. */ 
797extern char *canonicalize_file_name (const char *__name) 
798 __THROW __nonnull ((1)) __attribute_malloc__ 
799 __attr_dealloc_free __wur; 
800#endif 
801 
802#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED 
803/* Return the canonical absolute name of file NAME. If RESOLVED is 
804 null, the result is malloc'd; otherwise, if the canonical name is 
805 PATH_MAX chars or more, returns null with `errno' set to 
806 ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars, 
807 returns the name in RESOLVED. */ 
808extern char *realpath (const char *__restrict __name, 
809 char *__restrict __resolved) __THROW __wur; 
810#endif 
811 
812 
813/* Shorthand for type of comparison functions. */ 
814#ifndef __COMPAR_FN_T 
815# define __COMPAR_FN_T 
816typedef int (*__compar_fn_t) (const void *, const void *); 
817 
818# ifdef __USE_GNU 
819typedef __compar_fn_t comparison_fn_t; 
820# endif 
821#endif 
822#ifdef __USE_GNU 
823typedef int (*__compar_d_fn_t) (const void *, const void *, void *); 
824#endif 
825 
826/* Do a binary search for KEY in BASE, which consists of NMEMB elements 
827 of SIZE bytes each, using COMPAR to perform the comparisons. */ 
828extern void *bsearch (const void *__key, const void *__base, 
829 size_t __nmemb, size_t __size, __compar_fn_t __compar) 
830 __nonnull ((1, 2, 5)) __wur; 
831 
832#ifdef __USE_EXTERN_INLINES 
833# include <bits/stdlib-bsearch.h> 
834#endif 
835 
836/* Sort NMEMB elements of BASE, of SIZE bytes each, 
837 using COMPAR to perform the comparisons. */ 
838extern void qsort (void *__base, size_t __nmemb, size_t __size, 
839 __compar_fn_t __compar) __nonnull ((1, 4)); 
840#ifdef __USE_GNU 
841extern void qsort_r (void *__base, size_t __nmemb, size_t __size, 
842 __compar_d_fn_t __compar, void *__arg) 
843 __nonnull ((1, 4)); 
844#endif 
845 
846 
847/* Return the absolute value of X. */ 
848extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur; 
849extern long int labs (long int __x) __THROW __attribute__ ((__const__)) __wur; 
850 
851#ifdef __USE_ISOC99 
852__extension__ extern long long int llabs (long long int __x) 
853 __THROW __attribute__ ((__const__)) __wur; 
854#endif 
855 
856 
857/* Return the `div_t', `ldiv_t' or `lldiv_t' representation 
858 of the value of NUMER over DENOM. */ 
859/* GCC may have built-ins for these someday. */ 
860extern div_t div (int __numer, int __denom) 
861 __THROW __attribute__ ((__const__)) __wur; 
862extern ldiv_t ldiv (long int __numer, long int __denom) 
863 __THROW __attribute__ ((__const__)) __wur; 
864 
865#ifdef __USE_ISOC99 
866__extension__ extern lldiv_t lldiv (long long int __numer, 
867 long long int __denom) 
868 __THROW __attribute__ ((__const__)) __wur; 
869#endif 
870 
871 
872#if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) \ 
873 || defined __USE_MISC 
874/* Convert floating point numbers to strings. The returned values are 
875 valid only until another call to the same function. */ 
876 
877/* Convert VALUE to a string with NDIGIT digits and return a pointer to 
878 this. Set *DECPT with the position of the decimal character and *SIGN 
879 with the sign of the number. */ 
880extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt, 
881 int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur; 
882 
883/* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT 
884 with the position of the decimal character and *SIGN with the sign of 
885 the number. */ 
886extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt, 
887 int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur; 
888 
889/* If possible convert VALUE to a string with NDIGIT significant digits. 
890 Otherwise use exponential representation. The resulting string will 
891 be written to BUF. */ 
892extern char *gcvt (double __value, int __ndigit, char *__buf) 
893 __THROW __nonnull ((3)) __wur; 
894#endif 
895 
896#ifdef __USE_MISC 
897/* Long double versions of above functions. */ 
898extern char *qecvt (long double __value, int __ndigit, 
899 int *__restrict __decpt, int *__restrict __sign) 
900 __THROW __nonnull ((3, 4)) __wur; 
901extern char *qfcvt (long double __value, int __ndigit, 
902 int *__restrict __decpt, int *__restrict __sign) 
903 __THROW __nonnull ((3, 4)) __wur; 
904extern char *qgcvt (long double __value, int __ndigit, char *__buf) 
905 __THROW __nonnull ((3)) __wur; 
906 
907 
908/* Reentrant version of the functions above which provide their own 
909 buffers. */ 
910extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt, 
911 int *__restrict __sign, char *__restrict __buf, 
912 size_t __len) __THROW __nonnull ((3, 4, 5)); 
913extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt, 
914 int *__restrict __sign, char *__restrict __buf, 
915 size_t __len) __THROW __nonnull ((3, 4, 5)); 
916 
917extern int qecvt_r (long double __value, int __ndigit, 
918 int *__restrict __decpt, int *__restrict __sign, 
919 char *__restrict __buf, size_t __len) 
920 __THROW __nonnull ((3, 4, 5)); 
921extern int qfcvt_r (long double __value, int __ndigit, 
922 int *__restrict __decpt, int *__restrict __sign, 
923 char *__restrict __buf, size_t __len) 
924 __THROW __nonnull ((3, 4, 5)); 
925#endif /* misc */ 
926 
927 
928/* Return the length of the multibyte character 
929 in S, which is no longer than N. */ 
930extern int mblen (const char *__s, size_t __n) __THROW; 
931/* Return the length of the given multibyte character, 
932 putting its `wchar_t' representation in *PWC. */ 
933extern int mbtowc (wchar_t *__restrict __pwc, 
934 const char *__restrict __s, size_t __n) __THROW; 
935/* Put the multibyte character represented 
936 by WCHAR in S, returning its length. */ 
937extern int wctomb (char *__s, wchar_t __wchar) __THROW; 
938 
939 
940/* Convert a multibyte string to a wide char string. */ 
941extern size_t mbstowcs (wchar_t *__restrict __pwcs, 
942 const char *__restrict __s, size_t __n) __THROW 
943 __attr_access ((__read_only__, 2)); 
944/* Convert a wide char string to multibyte string. */ 
945extern size_t wcstombs (char *__restrict __s, 
946 const wchar_t *__restrict __pwcs, size_t __n) 
947 __THROW 
948 __fortified_attr_access (__write_only__, 1, 3) 
949 __attr_access ((__read_only__, 2)); 
950 
951#ifdef __USE_MISC 
952/* Determine whether the string value of RESPONSE matches the affirmation 
953 or negative response expression as specified by the LC_MESSAGES category 
954 in the program's current locale. Returns 1 if affirmative, 0 if 
955 negative, and -1 if not matching. */ 
956extern int rpmatch (const char *__response) __THROW __nonnull ((1)) __wur; 
957#endif 
958 
959 
960#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 
961/* Parse comma separated suboption from *OPTIONP and match against 
962 strings in TOKENS. If found return index and set *VALUEP to 
963 optional value introduced by an equal sign. If the suboption is 
964 not part of TOKENS return in *VALUEP beginning of unknown 
965 suboption. On exit *OPTIONP is set to the beginning of the next 
966 token or at the terminating NUL character. */ 
967extern int getsubopt (char **__restrict __optionp, 
968 char *const *__restrict __tokens, 
969 char **__restrict __valuep) 
970 __THROW __nonnull ((1, 2, 3)) __wur; 
971#endif 
972 
973 
974/* X/Open pseudo terminal handling. */ 
975 
976#ifdef __USE_XOPEN2KXSI 
977/* Return a master pseudo-terminal handle. */ 
978extern int posix_openpt (int __oflag) __wur; 
979#endif 
980 
981#ifdef __USE_XOPEN_EXTENDED 
982/* The next four functions all take a master pseudo-tty fd and 
983 perform an operation on the associated slave: */ 
984 
985/* Chown the slave to the calling user. */ 
986extern int grantpt (int __fd) __THROW; 
987 
988/* Release an internal lock so the slave can be opened. 
989 Call after grantpt(). */ 
990extern int unlockpt (int __fd) __THROW; 
991 
992/* Return the pathname of the pseudo terminal slave associated with 
993 the master FD is open on, or NULL on errors. 
994 The returned storage is good until the next call to this function. */ 
995extern char *ptsname (int __fd) __THROW __wur; 
996#endif 
997 
998#ifdef __USE_GNU 
999/* Store at most BUFLEN characters of the pathname of the slave pseudo 
1000 terminal associated with the master FD is open on in BUF. 
1001 Return 0 on success, otherwise an error number. */ 
1002extern int ptsname_r (int __fd, char *__buf, size_t __buflen) 
1003 __THROW __nonnull ((2)) __fortified_attr_access (__write_only__, 2, 3); 
1004 
1005/* Open a master pseudo terminal and return its file descriptor. */ 
1006extern int getpt (void); 
1007#endif 
1008 
1009#ifdef __USE_MISC 
1010/* Put the 1 minute, 5 minute and 15 minute load averages into the first 
1011 NELEM elements of LOADAVG. Return the number written (never more than 
1012 three, but may be less than NELEM), or -1 if an error occurred. */ 
1013extern int getloadavg (double __loadavg[], int __nelem) 
1014 __THROW __nonnull ((1)); 
1015#endif 
1016 
1017#if defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K 
1018/* Return the index into the active-logins file (utmp) for 
1019 the controlling terminal. */ 
1020extern int ttyslot (void) __THROW; 
1021#endif 
1022 
1023#include <bits/stdlib-float.h> 
1024 
1025/* Define some macros helping to catch buffer overflows. */ 
1026#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function 
1027# include <bits/stdlib.h> 
1028#endif 
1029 
1030#include <bits/floatn.h> 
1031#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 
1032# include <bits/stdlib-ldbl.h> 
1033#endif 
1034 
1035__END_DECLS 
1036 
1037#endif /* stdlib.h */ 
1038