1 | /* Copyright (C) 1991-2016 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | /* |
19 | * ISO C99 Standard: 7.20 General utilities <stdlib.h> |
20 | */ |
21 | |
22 | #ifndef _STDLIB_H |
23 | |
24 | #include <features.h> |
25 | |
26 | /* Get size_t, wchar_t and NULL from <stddef.h>. */ |
27 | #define __need_size_t |
28 | #ifndef __need_malloc_and_calloc |
29 | # define __need_wchar_t |
30 | # define __need_NULL |
31 | #endif |
32 | #include <stddef.h> |
33 | |
34 | __BEGIN_DECLS |
35 | |
36 | #ifndef __need_malloc_and_calloc |
37 | #define _STDLIB_H 1 |
38 | |
39 | #if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H |
40 | /* XPG requires a few symbols from <sys/wait.h> being defined. */ |
41 | # include <bits/waitflags.h> |
42 | # include <bits/waitstatus.h> |
43 | |
44 | /* Define the macros <sys/wait.h> also would define this way. */ |
45 | # define WEXITSTATUS(status) __WEXITSTATUS (status) |
46 | # define WTERMSIG(status) __WTERMSIG (status) |
47 | # define WSTOPSIG(status) __WSTOPSIG (status) |
48 | # define WIFEXITED(status) __WIFEXITED (status) |
49 | # define WIFSIGNALED(status) __WIFSIGNALED (status) |
50 | # define WIFSTOPPED(status) __WIFSTOPPED (status) |
51 | # ifdef __WIFCONTINUED |
52 | # define WIFCONTINUED(status) __WIFCONTINUED (status) |
53 | # endif |
54 | #endif /* X/Open or XPG7 and <sys/wait.h> not included. */ |
55 | |
56 | __BEGIN_NAMESPACE_STD |
57 | /* Returned by `div'. */ |
58 | typedef struct |
59 | { |
60 | int quot; /* Quotient. */ |
61 | int rem; /* Remainder. */ |
62 | } div_t; |
63 | |
64 | /* Returned by `ldiv'. */ |
65 | #ifndef __ldiv_t_defined |
66 | typedef struct |
67 | { |
68 | long int quot; /* Quotient. */ |
69 | long int rem; /* Remainder. */ |
70 | } ldiv_t; |
71 | # define __ldiv_t_defined 1 |
72 | #endif |
73 | __END_NAMESPACE_STD |
74 | |
75 | #if defined __USE_ISOC99 && !defined __lldiv_t_defined |
76 | __BEGIN_NAMESPACE_C99 |
77 | /* Returned by `lldiv'. */ |
78 | __extension__ typedef struct |
79 | { |
80 | long long int quot; /* Quotient. */ |
81 | long long int rem; /* Remainder. */ |
82 | } lldiv_t; |
83 | # define __lldiv_t_defined 1 |
84 | __END_NAMESPACE_C99 |
85 | #endif |
86 | |
87 | |
88 | /* The largest number rand will return (same as INT_MAX). */ |
89 | #define RAND_MAX 2147483647 |
90 | |
91 | |
92 | /* We define these the same for all machines. |
93 | Changes from this to the outside world should be done in `_exit'. */ |
94 | #define EXIT_FAILURE 1 /* Failing exit status. */ |
95 | #define EXIT_SUCCESS 0 /* Successful exit status. */ |
96 | |
97 | |
98 | /* Maximum length of a multibyte character in the current locale. */ |
99 | #define MB_CUR_MAX (__ctype_get_mb_cur_max ()) |
100 | extern size_t __ctype_get_mb_cur_max (void) __THROW __wur; |
101 | |
102 | |
103 | __BEGIN_NAMESPACE_STD |
104 | /* Convert a string to a floating-point number. */ |
105 | extern double atof (const char *__nptr) |
106 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
107 | /* Convert a string to an integer. */ |
108 | extern int atoi (const char *__nptr) |
109 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
110 | /* Convert a string to a long integer. */ |
111 | extern long int atol (const char *__nptr) |
112 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
113 | __END_NAMESPACE_STD |
114 | |
115 | #ifdef __USE_ISOC99 |
116 | __BEGIN_NAMESPACE_C99 |
117 | /* Convert a string to a long long integer. */ |
118 | __extension__ extern long long int atoll (const char *__nptr) |
119 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
120 | __END_NAMESPACE_C99 |
121 | #endif |
122 | |
123 | __BEGIN_NAMESPACE_STD |
124 | /* Convert a string to a floating-point number. */ |
125 | extern double strtod (const char *__restrict __nptr, |
126 | char **__restrict __endptr) |
127 | __THROW __nonnull ((1)); |
128 | __END_NAMESPACE_STD |
129 | |
130 | #ifdef __USE_ISOC99 |
131 | __BEGIN_NAMESPACE_C99 |
132 | /* Likewise for `float' and `long double' sizes of floating-point numbers. */ |
133 | extern float strtof (const char *__restrict __nptr, |
134 | char **__restrict __endptr) __THROW __nonnull ((1)); |
135 | |
136 | extern long double strtold (const char *__restrict __nptr, |
137 | char **__restrict __endptr) |
138 | __THROW __nonnull ((1)); |
139 | __END_NAMESPACE_C99 |
140 | #endif |
141 | |
142 | __BEGIN_NAMESPACE_STD |
143 | /* Convert a string to a long integer. */ |
144 | extern long int strtol (const char *__restrict __nptr, |
145 | char **__restrict __endptr, int __base) |
146 | __THROW __nonnull ((1)); |
147 | /* Convert a string to an unsigned long integer. */ |
148 | extern unsigned long int strtoul (const char *__restrict __nptr, |
149 | char **__restrict __endptr, int __base) |
150 | __THROW __nonnull ((1)); |
151 | __END_NAMESPACE_STD |
152 | |
153 | #ifdef __USE_MISC |
154 | /* Convert a string to a quadword integer. */ |
155 | __extension__ |
156 | extern long long int strtoq (const char *__restrict __nptr, |
157 | char **__restrict __endptr, int __base) |
158 | __THROW __nonnull ((1)); |
159 | /* Convert a string to an unsigned quadword integer. */ |
160 | __extension__ |
161 | extern unsigned long long int strtouq (const char *__restrict __nptr, |
162 | char **__restrict __endptr, int __base) |
163 | __THROW __nonnull ((1)); |
164 | #endif /* Use misc. */ |
165 | |
166 | #ifdef __USE_ISOC99 |
167 | __BEGIN_NAMESPACE_C99 |
168 | /* Convert a string to a quadword integer. */ |
169 | __extension__ |
170 | extern long long int strtoll (const char *__restrict __nptr, |
171 | char **__restrict __endptr, int __base) |
172 | __THROW __nonnull ((1)); |
173 | /* Convert a string to an unsigned quadword integer. */ |
174 | __extension__ |
175 | extern unsigned long long int strtoull (const char *__restrict __nptr, |
176 | char **__restrict __endptr, int __base) |
177 | __THROW __nonnull ((1)); |
178 | __END_NAMESPACE_C99 |
179 | #endif /* ISO C99 or use MISC. */ |
180 | |
181 | |
182 | #ifdef __USE_GNU |
183 | /* The concept of one static locale per category is not very well |
184 | thought out. Many applications will need to process its data using |
185 | information from several different locales. Another problem is |
186 | the implementation of the internationalization handling in the |
187 | ISO C++ standard library. To support this another set of |
188 | the functions using locale data exist which take an additional |
189 | argument. |
190 | |
191 | Attention: even though several *_l interfaces are part of POSIX:2008, |
192 | these are not. */ |
193 | |
194 | /* Structure for reentrant locale using functions. This is an |
195 | (almost) opaque type for the user level programs. */ |
196 | # include <xlocale.h> |
197 | |
198 | /* Special versions of the functions above which take the locale to |
199 | use as an additional parameter. */ |
200 | extern long int strtol_l (const char *__restrict __nptr, |
201 | char **__restrict __endptr, int __base, |
202 | __locale_t __loc) __THROW __nonnull ((1, 4)); |
203 | |
204 | extern unsigned long int strtoul_l (const char *__restrict __nptr, |
205 | char **__restrict __endptr, |
206 | int __base, __locale_t __loc) |
207 | __THROW __nonnull ((1, 4)); |
208 | |
209 | __extension__ |
210 | extern long long int strtoll_l (const char *__restrict __nptr, |
211 | char **__restrict __endptr, int __base, |
212 | __locale_t __loc) |
213 | __THROW __nonnull ((1, 4)); |
214 | |
215 | __extension__ |
216 | extern unsigned long long int strtoull_l (const char *__restrict __nptr, |
217 | char **__restrict __endptr, |
218 | int __base, __locale_t __loc) |
219 | __THROW __nonnull ((1, 4)); |
220 | |
221 | extern double strtod_l (const char *__restrict __nptr, |
222 | char **__restrict __endptr, __locale_t __loc) |
223 | __THROW __nonnull ((1, 3)); |
224 | |
225 | extern float strtof_l (const char *__restrict __nptr, |
226 | char **__restrict __endptr, __locale_t __loc) |
227 | __THROW __nonnull ((1, 3)); |
228 | |
229 | extern long double strtold_l (const char *__restrict __nptr, |
230 | char **__restrict __endptr, |
231 | __locale_t __loc) |
232 | __THROW __nonnull ((1, 3)); |
233 | #endif /* GNU */ |
234 | |
235 | |
236 | #ifdef __USE_EXTERN_INLINES |
237 | __BEGIN_NAMESPACE_STD |
238 | __extern_inline int |
239 | __NTH (atoi (const char *__nptr)) |
240 | { |
241 | return (int) strtol (__nptr, (char **) NULL, 10); |
242 | } |
243 | __extern_inline long int |
244 | __NTH (atol (const char *__nptr)) |
245 | { |
246 | return strtol (__nptr, (char **) NULL, 10); |
247 | } |
248 | __END_NAMESPACE_STD |
249 | |
250 | # ifdef __USE_ISOC99 |
251 | __BEGIN_NAMESPACE_C99 |
252 | __extension__ __extern_inline long long int |
253 | __NTH (atoll (const char *__nptr)) |
254 | { |
255 | return strtoll (__nptr, (char **) NULL, 10); |
256 | } |
257 | __END_NAMESPACE_C99 |
258 | # endif |
259 | #endif /* Optimizing and Inlining. */ |
260 | |
261 | |
262 | #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
263 | /* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant |
264 | digit first. Returns a pointer to static storage overwritten by the |
265 | next call. */ |
266 | extern char *l64a (long int __n) __THROW __wur; |
267 | |
268 | /* Read a number from a string S in base 64 as above. */ |
269 | extern long int a64l (const char *__s) |
270 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
271 | |
272 | #endif /* Use misc || extended X/Open. */ |
273 | |
274 | #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
275 | # include <sys/types.h> /* we need int32_t... */ |
276 | |
277 | /* These are the functions that actually do things. The `random', `srandom', |
278 | `initstate' and `setstate' functions are those from BSD Unices. |
279 | The `rand' and `srand' functions are required by the ANSI standard. |
280 | We provide both interfaces to the same random number generator. */ |
281 | /* Return a random long integer between 0 and RAND_MAX inclusive. */ |
282 | extern long int random (void) __THROW; |
283 | |
284 | /* Seed the random number generator with the given number. */ |
285 | extern void srandom (unsigned int __seed) __THROW; |
286 | |
287 | /* Initialize the random number generator to use state buffer STATEBUF, |
288 | of length STATELEN, and seed it with SEED. Optimal lengths are 8, 16, |
289 | 32, 64, 128 and 256, the bigger the better; values less than 8 will |
290 | cause an error and values greater than 256 will be rounded down. */ |
291 | extern char *initstate (unsigned int __seed, char *__statebuf, |
292 | size_t __statelen) __THROW __nonnull ((2)); |
293 | |
294 | /* Switch the random number generator to state buffer STATEBUF, |
295 | which should have been previously initialized by `initstate'. */ |
296 | extern char *setstate (char *__statebuf) __THROW __nonnull ((1)); |
297 | |
298 | |
299 | # ifdef __USE_MISC |
300 | /* Reentrant versions of the `random' family of functions. |
301 | These functions all use the following data structure to contain |
302 | state, rather than global state variables. */ |
303 | |
304 | struct random_data |
305 | { |
306 | int32_t *fptr; /* Front pointer. */ |
307 | int32_t *rptr; /* Rear pointer. */ |
308 | int32_t *state; /* Array of state values. */ |
309 | int rand_type; /* Type of random number generator. */ |
310 | int rand_deg; /* Degree of random number generator. */ |
311 | int rand_sep; /* Distance between front and rear. */ |
312 | int32_t *end_ptr; /* Pointer behind state table. */ |
313 | }; |
314 | |
315 | extern int random_r (struct random_data *__restrict __buf, |
316 | int32_t *__restrict __result) __THROW __nonnull ((1, 2)); |
317 | |
318 | extern int srandom_r (unsigned int __seed, struct random_data *__buf) |
319 | __THROW __nonnull ((2)); |
320 | |
321 | extern int initstate_r (unsigned int __seed, char *__restrict __statebuf, |
322 | size_t __statelen, |
323 | struct random_data *__restrict __buf) |
324 | __THROW __nonnull ((2, 4)); |
325 | |
326 | extern int setstate_r (char *__restrict __statebuf, |
327 | struct random_data *__restrict __buf) |
328 | __THROW __nonnull ((1, 2)); |
329 | # endif /* Use misc. */ |
330 | #endif /* Use extended X/Open || misc. */ |
331 | |
332 | |
333 | __BEGIN_NAMESPACE_STD |
334 | /* Return a random integer between 0 and RAND_MAX inclusive. */ |
335 | extern int rand (void) __THROW; |
336 | /* Seed the random number generator with the given number. */ |
337 | extern void srand (unsigned int __seed) __THROW; |
338 | __END_NAMESPACE_STD |
339 | |
340 | #ifdef __USE_POSIX199506 |
341 | /* Reentrant interface according to POSIX.1. */ |
342 | extern int rand_r (unsigned int *__seed) __THROW; |
343 | #endif |
344 | |
345 | |
346 | #if defined __USE_MISC || defined __USE_XOPEN |
347 | /* System V style 48-bit random number generator functions. */ |
348 | |
349 | /* Return non-negative, double-precision floating-point value in [0.0,1.0). */ |
350 | extern double drand48 (void) __THROW; |
351 | extern double erand48 (unsigned short int __xsubi[3]) __THROW __nonnull ((1)); |
352 | |
353 | /* Return non-negative, long integer in [0,2^31). */ |
354 | extern long int lrand48 (void) __THROW; |
355 | extern long int nrand48 (unsigned short int __xsubi[3]) |
356 | __THROW __nonnull ((1)); |
357 | |
358 | /* Return signed, long integers in [-2^31,2^31). */ |
359 | extern long int mrand48 (void) __THROW; |
360 | extern long int jrand48 (unsigned short int __xsubi[3]) |
361 | __THROW __nonnull ((1)); |
362 | |
363 | /* Seed random number generator. */ |
364 | extern void srand48 (long int __seedval) __THROW; |
365 | extern unsigned short int *seed48 (unsigned short int __seed16v[3]) |
366 | __THROW __nonnull ((1)); |
367 | extern void lcong48 (unsigned short int __param[7]) __THROW __nonnull ((1)); |
368 | |
369 | # ifdef __USE_MISC |
370 | /* Data structure for communication with thread safe versions. This |
371 | type is to be regarded as opaque. It's only exported because users |
372 | have to allocate objects of this type. */ |
373 | struct drand48_data |
374 | { |
375 | unsigned short int __x[3]; /* Current state. */ |
376 | unsigned short int __old_x[3]; /* Old state. */ |
377 | unsigned short int __c; /* Additive const. in congruential formula. */ |
378 | unsigned short int __init; /* Flag for initializing. */ |
379 | __extension__ unsigned long long int __a; /* Factor in congruential |
380 | formula. */ |
381 | }; |
382 | |
383 | /* Return non-negative, double-precision floating-point value in [0.0,1.0). */ |
384 | extern int drand48_r (struct drand48_data *__restrict __buffer, |
385 | double *__restrict __result) __THROW __nonnull ((1, 2)); |
386 | extern int erand48_r (unsigned short int __xsubi[3], |
387 | struct drand48_data *__restrict __buffer, |
388 | double *__restrict __result) __THROW __nonnull ((1, 2)); |
389 | |
390 | /* Return non-negative, long integer in [0,2^31). */ |
391 | extern int lrand48_r (struct drand48_data *__restrict __buffer, |
392 | long int *__restrict __result) |
393 | __THROW __nonnull ((1, 2)); |
394 | extern int nrand48_r (unsigned short int __xsubi[3], |
395 | struct drand48_data *__restrict __buffer, |
396 | long int *__restrict __result) |
397 | __THROW __nonnull ((1, 2)); |
398 | |
399 | /* Return signed, long integers in [-2^31,2^31). */ |
400 | extern int mrand48_r (struct drand48_data *__restrict __buffer, |
401 | long int *__restrict __result) |
402 | __THROW __nonnull ((1, 2)); |
403 | extern int jrand48_r (unsigned short int __xsubi[3], |
404 | struct drand48_data *__restrict __buffer, |
405 | long int *__restrict __result) |
406 | __THROW __nonnull ((1, 2)); |
407 | |
408 | /* Seed random number generator. */ |
409 | extern int srand48_r (long int __seedval, struct drand48_data *__buffer) |
410 | __THROW __nonnull ((2)); |
411 | |
412 | extern int seed48_r (unsigned short int __seed16v[3], |
413 | struct drand48_data *__buffer) __THROW __nonnull ((1, 2)); |
414 | |
415 | extern int lcong48_r (unsigned short int __param[7], |
416 | struct drand48_data *__buffer) |
417 | __THROW __nonnull ((1, 2)); |
418 | # endif /* Use misc. */ |
419 | #endif /* Use misc or X/Open. */ |
420 | |
421 | #endif /* don't just need malloc and calloc */ |
422 | |
423 | #ifndef __malloc_and_calloc_defined |
424 | # define __malloc_and_calloc_defined |
425 | __BEGIN_NAMESPACE_STD |
426 | /* Allocate SIZE bytes of memory. */ |
427 | extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur; |
428 | /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */ |
429 | extern void *calloc (size_t __nmemb, size_t __size) |
430 | __THROW __attribute_malloc__ __wur; |
431 | __END_NAMESPACE_STD |
432 | #endif |
433 | |
434 | #ifndef __need_malloc_and_calloc |
435 | __BEGIN_NAMESPACE_STD |
436 | /* Re-allocate the previously allocated block |
437 | in PTR, making the new block SIZE bytes long. */ |
438 | /* __attribute_malloc__ is not used, because if realloc returns |
439 | the same pointer that was passed to it, aliasing needs to be allowed |
440 | between objects pointed by the old and new pointers. */ |
441 | extern void *realloc (void *__ptr, size_t __size) |
442 | __THROW __attribute_warn_unused_result__; |
443 | /* Free a block allocated by `malloc', `realloc' or `calloc'. */ |
444 | extern void free (void *__ptr) __THROW; |
445 | __END_NAMESPACE_STD |
446 | |
447 | #ifdef __USE_MISC |
448 | /* Free a block. An alias for `free'. (Sun Unices). */ |
449 | extern void cfree (void *__ptr) __THROW; |
450 | #endif /* Use misc. */ |
451 | |
452 | #ifdef __USE_MISC |
453 | # include <alloca.h> |
454 | #endif /* Use misc. */ |
455 | |
456 | #if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K) \ |
457 | || defined __USE_MISC |
458 | /* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */ |
459 | extern void *valloc (size_t __size) __THROW __attribute_malloc__ __wur; |
460 | #endif |
461 | |
462 | #ifdef __USE_XOPEN2K |
463 | /* Allocate memory of SIZE bytes with an alignment of ALIGNMENT. */ |
464 | extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size) |
465 | __THROW __nonnull ((1)) __wur; |
466 | #endif |
467 | |
468 | #ifdef __USE_ISOC11 |
469 | /* ISO C variant of aligned allocation. */ |
470 | extern void *aligned_alloc (size_t __alignment, size_t __size) |
471 | __THROW __attribute_malloc__ __attribute_alloc_size__ ((2)) __wur; |
472 | #endif |
473 | |
474 | __BEGIN_NAMESPACE_STD |
475 | /* Abort execution and generate a core-dump. */ |
476 | extern void abort (void) __THROW __attribute__ ((__noreturn__)); |
477 | |
478 | |
479 | /* Register a function to be called when `exit' is called. */ |
480 | extern int atexit (void (*__func) (void)) __THROW __nonnull ((1)); |
481 | |
482 | #if defined __USE_ISOC11 || defined __USE_ISOCXX11 |
483 | /* Register a function to be called when `quick_exit' is called. */ |
484 | # ifdef __cplusplus |
485 | extern "C++" int at_quick_exit (void (*__func) (void)) |
486 | __THROW __asm ("at_quick_exit" ) __nonnull ((1)); |
487 | # else |
488 | extern int at_quick_exit (void (*__func) (void)) __THROW __nonnull ((1)); |
489 | # endif |
490 | #endif |
491 | __END_NAMESPACE_STD |
492 | |
493 | #ifdef __USE_MISC |
494 | /* Register a function to be called with the status |
495 | given to `exit' and the given argument. */ |
496 | extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg) |
497 | __THROW __nonnull ((1)); |
498 | #endif |
499 | |
500 | __BEGIN_NAMESPACE_STD |
501 | /* Call all functions registered with `atexit' and `on_exit', |
502 | in the reverse of the order in which they were registered, |
503 | perform stdio cleanup, and terminate program execution with STATUS. */ |
504 | extern void exit (int __status) __THROW __attribute__ ((__noreturn__)); |
505 | |
506 | #if defined __USE_ISOC11 || defined __USE_ISOCXX11 |
507 | /* Call all functions registered with `at_quick_exit' in the reverse |
508 | of the order in which they were registered and terminate program |
509 | execution with STATUS. */ |
510 | extern void quick_exit (int __status) __THROW __attribute__ ((__noreturn__)); |
511 | #endif |
512 | __END_NAMESPACE_STD |
513 | |
514 | #ifdef __USE_ISOC99 |
515 | __BEGIN_NAMESPACE_C99 |
516 | /* Terminate the program with STATUS without calling any of the |
517 | functions registered with `atexit' or `on_exit'. */ |
518 | extern void _Exit (int __status) __THROW __attribute__ ((__noreturn__)); |
519 | __END_NAMESPACE_C99 |
520 | #endif |
521 | |
522 | |
523 | __BEGIN_NAMESPACE_STD |
524 | /* Return the value of envariable NAME, or NULL if it doesn't exist. */ |
525 | extern char *getenv (const char *__name) __THROW __nonnull ((1)) __wur; |
526 | __END_NAMESPACE_STD |
527 | |
528 | #ifdef __USE_GNU |
529 | /* This function is similar to the above but returns NULL if the |
530 | programs is running with SUID or SGID enabled. */ |
531 | extern char *secure_getenv (const char *__name) |
532 | __THROW __nonnull ((1)) __wur; |
533 | #endif |
534 | |
535 | #if defined __USE_MISC || defined __USE_XOPEN |
536 | /* The SVID says this is in <stdio.h>, but this seems a better place. */ |
537 | /* Put STRING, which is of the form "NAME=VALUE", in the environment. |
538 | If there is no `=', remove NAME from the environment. */ |
539 | extern int putenv (char *__string) __THROW __nonnull ((1)); |
540 | #endif |
541 | |
542 | #ifdef __USE_XOPEN2K |
543 | /* Set NAME to VALUE in the environment. |
544 | If REPLACE is nonzero, overwrite an existing value. */ |
545 | extern int setenv (const char *__name, const char *__value, int __replace) |
546 | __THROW __nonnull ((2)); |
547 | |
548 | /* Remove the variable NAME from the environment. */ |
549 | extern int unsetenv (const char *__name) __THROW __nonnull ((1)); |
550 | #endif |
551 | |
552 | #ifdef __USE_MISC |
553 | /* The `clearenv' was planned to be added to POSIX.1 but probably |
554 | never made it. Nevertheless the POSIX.9 standard (POSIX bindings |
555 | for Fortran 77) requires this function. */ |
556 | extern int clearenv (void) __THROW; |
557 | #endif |
558 | |
559 | |
560 | #if defined __USE_MISC \ |
561 | || (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) |
562 | /* Generate a unique temporary file name from TEMPLATE. |
563 | The last six characters of TEMPLATE must be "XXXXXX"; |
564 | they are replaced with a string that makes the file name unique. |
565 | Always returns TEMPLATE, it's either a temporary file name or a null |
566 | string if it cannot get a unique file name. */ |
567 | extern char *mktemp (char *__template) __THROW __nonnull ((1)); |
568 | #endif |
569 | |
570 | #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 |
571 | /* Generate a unique temporary file name from TEMPLATE. |
572 | The last six characters of TEMPLATE must be "XXXXXX"; |
573 | they are replaced with a string that makes the filename unique. |
574 | Returns a file descriptor open on the file for reading and writing, |
575 | or -1 if it cannot create a uniquely-named file. |
576 | |
577 | This function is a possible cancellation point and therefore not |
578 | marked with __THROW. */ |
579 | # ifndef __USE_FILE_OFFSET64 |
580 | extern int mkstemp (char *__template) __nonnull ((1)) __wur; |
581 | # else |
582 | # ifdef __REDIRECT |
583 | extern int __REDIRECT (mkstemp, (char *__template), mkstemp64) |
584 | __nonnull ((1)) __wur; |
585 | # else |
586 | # define mkstemp mkstemp64 |
587 | # endif |
588 | # endif |
589 | # ifdef __USE_LARGEFILE64 |
590 | extern int mkstemp64 (char *__template) __nonnull ((1)) __wur; |
591 | # endif |
592 | #endif |
593 | |
594 | #ifdef __USE_MISC |
595 | /* Similar to mkstemp, but the template can have a suffix after the |
596 | XXXXXX. The length of the suffix is specified in the second |
597 | parameter. |
598 | |
599 | This function is a possible cancellation point and therefore not |
600 | marked with __THROW. */ |
601 | # ifndef __USE_FILE_OFFSET64 |
602 | extern int mkstemps (char *__template, int __suffixlen) __nonnull ((1)) __wur; |
603 | # else |
604 | # ifdef __REDIRECT |
605 | extern int __REDIRECT (mkstemps, (char *__template, int __suffixlen), |
606 | mkstemps64) __nonnull ((1)) __wur; |
607 | # else |
608 | # define mkstemps mkstemps64 |
609 | # endif |
610 | # endif |
611 | # ifdef __USE_LARGEFILE64 |
612 | extern int mkstemps64 (char *__template, int __suffixlen) |
613 | __nonnull ((1)) __wur; |
614 | # endif |
615 | #endif |
616 | |
617 | #ifdef __USE_XOPEN2K8 |
618 | /* Create a unique temporary directory from TEMPLATE. |
619 | The last six characters of TEMPLATE must be "XXXXXX"; |
620 | they are replaced with a string that makes the directory name unique. |
621 | Returns TEMPLATE, or a null pointer if it cannot get a unique name. |
622 | The directory is created mode 700. */ |
623 | extern char *mkdtemp (char *__template) __THROW __nonnull ((1)) __wur; |
624 | #endif |
625 | |
626 | #ifdef __USE_GNU |
627 | /* Generate a unique temporary file name from TEMPLATE similar to |
628 | mkstemp. But allow the caller to pass additional flags which are |
629 | used in the open call to create the file.. |
630 | |
631 | This function is a possible cancellation point and therefore not |
632 | marked with __THROW. */ |
633 | # ifndef __USE_FILE_OFFSET64 |
634 | extern int mkostemp (char *__template, int __flags) __nonnull ((1)) __wur; |
635 | # else |
636 | # ifdef __REDIRECT |
637 | extern int __REDIRECT (mkostemp, (char *__template, int __flags), mkostemp64) |
638 | __nonnull ((1)) __wur; |
639 | # else |
640 | # define mkostemp mkostemp64 |
641 | # endif |
642 | # endif |
643 | # ifdef __USE_LARGEFILE64 |
644 | extern int mkostemp64 (char *__template, int __flags) __nonnull ((1)) __wur; |
645 | # endif |
646 | |
647 | /* Similar to mkostemp, but the template can have a suffix after the |
648 | XXXXXX. The length of the suffix is specified in the second |
649 | parameter. |
650 | |
651 | This function is a possible cancellation point and therefore not |
652 | marked with __THROW. */ |
653 | # ifndef __USE_FILE_OFFSET64 |
654 | extern int mkostemps (char *__template, int __suffixlen, int __flags) |
655 | __nonnull ((1)) __wur; |
656 | # else |
657 | # ifdef __REDIRECT |
658 | extern int __REDIRECT (mkostemps, (char *__template, int __suffixlen, |
659 | int __flags), mkostemps64) |
660 | __nonnull ((1)) __wur; |
661 | # else |
662 | # define mkostemps mkostemps64 |
663 | # endif |
664 | # endif |
665 | # ifdef __USE_LARGEFILE64 |
666 | extern int mkostemps64 (char *__template, int __suffixlen, int __flags) |
667 | __nonnull ((1)) __wur; |
668 | # endif |
669 | #endif |
670 | |
671 | |
672 | __BEGIN_NAMESPACE_STD |
673 | /* Execute the given line as a shell command. |
674 | |
675 | This function is a cancellation point and therefore not marked with |
676 | __THROW. */ |
677 | extern int system (const char *__command) __wur; |
678 | __END_NAMESPACE_STD |
679 | |
680 | |
681 | #ifdef __USE_GNU |
682 | /* Return a malloc'd string containing the canonical absolute name of the |
683 | existing named file. */ |
684 | extern char *canonicalize_file_name (const char *__name) |
685 | __THROW __nonnull ((1)) __wur; |
686 | #endif |
687 | |
688 | #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
689 | /* Return the canonical absolute name of file NAME. If RESOLVED is |
690 | null, the result is malloc'd; otherwise, if the canonical name is |
691 | PATH_MAX chars or more, returns null with `errno' set to |
692 | ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars, |
693 | returns the name in RESOLVED. */ |
694 | extern char *realpath (const char *__restrict __name, |
695 | char *__restrict __resolved) __THROW __wur; |
696 | #endif |
697 | |
698 | |
699 | /* Shorthand for type of comparison functions. */ |
700 | #ifndef __COMPAR_FN_T |
701 | # define __COMPAR_FN_T |
702 | typedef int (*__compar_fn_t) (const void *, const void *); |
703 | |
704 | # ifdef __USE_GNU |
705 | typedef __compar_fn_t comparison_fn_t; |
706 | # endif |
707 | #endif |
708 | #ifdef __USE_GNU |
709 | typedef int (*__compar_d_fn_t) (const void *, const void *, void *); |
710 | #endif |
711 | |
712 | __BEGIN_NAMESPACE_STD |
713 | /* Do a binary search for KEY in BASE, which consists of NMEMB elements |
714 | of SIZE bytes each, using COMPAR to perform the comparisons. */ |
715 | extern void *bsearch (const void *__key, const void *__base, |
716 | size_t __nmemb, size_t __size, __compar_fn_t __compar) |
717 | __nonnull ((1, 2, 5)) __wur; |
718 | |
719 | #ifdef __USE_EXTERN_INLINES |
720 | # include <bits/stdlib-bsearch.h> |
721 | #endif |
722 | |
723 | /* Sort NMEMB elements of BASE, of SIZE bytes each, |
724 | using COMPAR to perform the comparisons. */ |
725 | extern void qsort (void *__base, size_t __nmemb, size_t __size, |
726 | __compar_fn_t __compar) __nonnull ((1, 4)); |
727 | #ifdef __USE_GNU |
728 | extern void qsort_r (void *__base, size_t __nmemb, size_t __size, |
729 | __compar_d_fn_t __compar, void *__arg) |
730 | __nonnull ((1, 4)); |
731 | #endif |
732 | |
733 | |
734 | /* Return the absolute value of X. */ |
735 | extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur; |
736 | extern long int labs (long int __x) __THROW __attribute__ ((__const__)) __wur; |
737 | __END_NAMESPACE_STD |
738 | |
739 | #ifdef __USE_ISOC99 |
740 | __extension__ extern long long int llabs (long long int __x) |
741 | __THROW __attribute__ ((__const__)) __wur; |
742 | #endif |
743 | |
744 | |
745 | __BEGIN_NAMESPACE_STD |
746 | /* Return the `div_t', `ldiv_t' or `lldiv_t' representation |
747 | of the value of NUMER over DENOM. */ |
748 | /* GCC may have built-ins for these someday. */ |
749 | extern div_t div (int __numer, int __denom) |
750 | __THROW __attribute__ ((__const__)) __wur; |
751 | extern ldiv_t ldiv (long int __numer, long int __denom) |
752 | __THROW __attribute__ ((__const__)) __wur; |
753 | __END_NAMESPACE_STD |
754 | |
755 | #ifdef __USE_ISOC99 |
756 | __BEGIN_NAMESPACE_C99 |
757 | __extension__ extern lldiv_t lldiv (long long int __numer, |
758 | long long int __denom) |
759 | __THROW __attribute__ ((__const__)) __wur; |
760 | __END_NAMESPACE_C99 |
761 | #endif |
762 | |
763 | |
764 | #if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) \ |
765 | || defined __USE_MISC |
766 | /* Convert floating point numbers to strings. The returned values are |
767 | valid only until another call to the same function. */ |
768 | |
769 | /* Convert VALUE to a string with NDIGIT digits and return a pointer to |
770 | this. Set *DECPT with the position of the decimal character and *SIGN |
771 | with the sign of the number. */ |
772 | extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt, |
773 | int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur; |
774 | |
775 | /* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT |
776 | with the position of the decimal character and *SIGN with the sign of |
777 | the number. */ |
778 | extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt, |
779 | int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur; |
780 | |
781 | /* If possible convert VALUE to a string with NDIGIT significant digits. |
782 | Otherwise use exponential representation. The resulting string will |
783 | be written to BUF. */ |
784 | extern char *gcvt (double __value, int __ndigit, char *__buf) |
785 | __THROW __nonnull ((3)) __wur; |
786 | #endif |
787 | |
788 | #ifdef __USE_MISC |
789 | /* Long double versions of above functions. */ |
790 | extern char *qecvt (long double __value, int __ndigit, |
791 | int *__restrict __decpt, int *__restrict __sign) |
792 | __THROW __nonnull ((3, 4)) __wur; |
793 | extern char *qfcvt (long double __value, int __ndigit, |
794 | int *__restrict __decpt, int *__restrict __sign) |
795 | __THROW __nonnull ((3, 4)) __wur; |
796 | extern char *qgcvt (long double __value, int __ndigit, char *__buf) |
797 | __THROW __nonnull ((3)) __wur; |
798 | |
799 | |
800 | /* Reentrant version of the functions above which provide their own |
801 | buffers. */ |
802 | extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt, |
803 | int *__restrict __sign, char *__restrict __buf, |
804 | size_t __len) __THROW __nonnull ((3, 4, 5)); |
805 | extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt, |
806 | int *__restrict __sign, char *__restrict __buf, |
807 | size_t __len) __THROW __nonnull ((3, 4, 5)); |
808 | |
809 | extern int qecvt_r (long double __value, int __ndigit, |
810 | int *__restrict __decpt, int *__restrict __sign, |
811 | char *__restrict __buf, size_t __len) |
812 | __THROW __nonnull ((3, 4, 5)); |
813 | extern int qfcvt_r (long double __value, int __ndigit, |
814 | int *__restrict __decpt, int *__restrict __sign, |
815 | char *__restrict __buf, size_t __len) |
816 | __THROW __nonnull ((3, 4, 5)); |
817 | #endif /* misc */ |
818 | |
819 | |
820 | __BEGIN_NAMESPACE_STD |
821 | /* Return the length of the multibyte character |
822 | in S, which is no longer than N. */ |
823 | extern int mblen (const char *__s, size_t __n) __THROW; |
824 | /* Return the length of the given multibyte character, |
825 | putting its `wchar_t' representation in *PWC. */ |
826 | extern int mbtowc (wchar_t *__restrict __pwc, |
827 | const char *__restrict __s, size_t __n) __THROW; |
828 | /* Put the multibyte character represented |
829 | by WCHAR in S, returning its length. */ |
830 | extern int wctomb (char *__s, wchar_t __wchar) __THROW; |
831 | |
832 | |
833 | /* Convert a multibyte string to a wide char string. */ |
834 | extern size_t mbstowcs (wchar_t *__restrict __pwcs, |
835 | const char *__restrict __s, size_t __n) __THROW; |
836 | /* Convert a wide char string to multibyte string. */ |
837 | extern size_t wcstombs (char *__restrict __s, |
838 | const wchar_t *__restrict __pwcs, size_t __n) |
839 | __THROW; |
840 | __END_NAMESPACE_STD |
841 | |
842 | |
843 | #ifdef __USE_MISC |
844 | /* Determine whether the string value of RESPONSE matches the affirmation |
845 | or negative response expression as specified by the LC_MESSAGES category |
846 | in the program's current locale. Returns 1 if affirmative, 0 if |
847 | negative, and -1 if not matching. */ |
848 | extern int rpmatch (const char *__response) __THROW __nonnull ((1)) __wur; |
849 | #endif |
850 | |
851 | |
852 | #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 |
853 | /* Parse comma separated suboption from *OPTIONP and match against |
854 | strings in TOKENS. If found return index and set *VALUEP to |
855 | optional value introduced by an equal sign. If the suboption is |
856 | not part of TOKENS return in *VALUEP beginning of unknown |
857 | suboption. On exit *OPTIONP is set to the beginning of the next |
858 | token or at the terminating NUL character. */ |
859 | extern int getsubopt (char **__restrict __optionp, |
860 | char *const *__restrict __tokens, |
861 | char **__restrict __valuep) |
862 | __THROW __nonnull ((1, 2, 3)) __wur; |
863 | #endif |
864 | |
865 | |
866 | #ifdef __USE_XOPEN |
867 | /* Setup DES tables according KEY. */ |
868 | extern void setkey (const char *__key) __THROW __nonnull ((1)); |
869 | #endif |
870 | |
871 | |
872 | /* X/Open pseudo terminal handling. */ |
873 | |
874 | #ifdef __USE_XOPEN2KXSI |
875 | /* Return a master pseudo-terminal handle. */ |
876 | extern int posix_openpt (int __oflag) __wur; |
877 | #endif |
878 | |
879 | #ifdef __USE_XOPEN_EXTENDED |
880 | /* The next four functions all take a master pseudo-tty fd and |
881 | perform an operation on the associated slave: */ |
882 | |
883 | /* Chown the slave to the calling user. */ |
884 | extern int grantpt (int __fd) __THROW; |
885 | |
886 | /* Release an internal lock so the slave can be opened. |
887 | Call after grantpt(). */ |
888 | extern int unlockpt (int __fd) __THROW; |
889 | |
890 | /* Return the pathname of the pseudo terminal slave associated with |
891 | the master FD is open on, or NULL on errors. |
892 | The returned storage is good until the next call to this function. */ |
893 | extern char *ptsname (int __fd) __THROW __wur; |
894 | #endif |
895 | |
896 | #ifdef __USE_GNU |
897 | /* Store at most BUFLEN characters of the pathname of the slave pseudo |
898 | terminal associated with the master FD is open on in BUF. |
899 | Return 0 on success, otherwise an error number. */ |
900 | extern int ptsname_r (int __fd, char *__buf, size_t __buflen) |
901 | __THROW __nonnull ((2)); |
902 | |
903 | /* Open a master pseudo terminal and return its file descriptor. */ |
904 | extern int getpt (void); |
905 | #endif |
906 | |
907 | #ifdef __USE_MISC |
908 | /* Put the 1 minute, 5 minute and 15 minute load averages into the first |
909 | NELEM elements of LOADAVG. Return the number written (never more than |
910 | three, but may be less than NELEM), or -1 if an error occurred. */ |
911 | extern int getloadavg (double __loadavg[], int __nelem) |
912 | __THROW __nonnull ((1)); |
913 | #endif |
914 | |
915 | #if defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K |
916 | /* Return the index into the active-logins file (utmp) for |
917 | the controlling terminal. */ |
918 | extern int ttyslot (void) __THROW; |
919 | #endif |
920 | |
921 | #include <bits/stdlib-float.h> |
922 | |
923 | /* Define some macros helping to catch buffer overflows. */ |
924 | #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function |
925 | # include <bits/stdlib.h> |
926 | #endif |
927 | #ifdef __LDBL_COMPAT |
928 | # include <bits/stdlib-ldbl.h> |
929 | #endif |
930 | |
931 | #endif /* don't just need malloc and calloc */ |
932 | #undef __need_malloc_and_calloc |
933 | |
934 | __END_DECLS |
935 | |
936 | #endif /* stdlib.h */ |
937 | |