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2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
ba1ffaa1 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ba1ffaa1 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
ba1ffaa1 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 RM |
17 | |
18 | /* | |
d1646309 | 19 | * ISO C99 Standard: 7.20 General utilities <stdlib.h> |
28f540f4 RM |
20 | */ |
21 | ||
22 | #ifndef _STDLIB_H | |
5107cf1d | 23 | |
6962682f GG |
24 | #define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION |
25 | #include <bits/libc-header-start.h> | |
28f540f4 RM |
26 | |
27 | /* Get size_t, wchar_t and NULL from <stddef.h>. */ | |
ae65d4f3 WD |
28 | #define __need_size_t |
29 | #define __need_wchar_t | |
30 | #define __need_NULL | |
28f540f4 RM |
31 | #include <stddef.h> |
32 | ||
50497a16 UD |
33 | __BEGIN_DECLS |
34 | ||
50497a16 UD |
35 | #define _STDLIB_H 1 |
36 | ||
f095bb72 | 37 | #if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H |
9323b58f UD |
38 | /* XPG requires a few symbols from <sys/wait.h> being defined. */ |
39 | # include <bits/waitflags.h> | |
40 | # include <bits/waitstatus.h> | |
41 | ||
9323b58f | 42 | /* Define the macros <sys/wait.h> also would define this way. */ |
b49ab5f4 FW |
43 | # define WEXITSTATUS(status) __WEXITSTATUS (status) |
44 | # define WTERMSIG(status) __WTERMSIG (status) | |
45 | # define WSTOPSIG(status) __WSTOPSIG (status) | |
46 | # define WIFEXITED(status) __WIFEXITED (status) | |
47 | # define WIFSIGNALED(status) __WIFSIGNALED (status) | |
48 | # define WIFSTOPPED(status) __WIFSTOPPED (status) | |
a044c713 | 49 | # ifdef __WIFCONTINUED |
b49ab5f4 | 50 | # define WIFCONTINUED(status) __WIFCONTINUED (status) |
a044c713 | 51 | # endif |
f095bb72 | 52 | #endif /* X/Open or XPG7 and <sys/wait.h> not included. */ |
9323b58f | 53 | |
cf2046ec GG |
54 | /* _FloatN API tests for enablement. */ |
55 | #include <bits/floatn.h> | |
56 | ||
28f540f4 RM |
57 | /* Returned by `div'. */ |
58 | typedef struct | |
59 | { | |
60 | int quot; /* Quotient. */ | |
61 | int rem; /* Remainder. */ | |
62 | } div_t; | |
63 | ||
64 | /* Returned by `ldiv'. */ | |
e518937a | 65 | #ifndef __ldiv_t_defined |
28f540f4 RM |
66 | typedef struct |
67 | { | |
68 | long int quot; /* Quotient. */ | |
69 | long int rem; /* Remainder. */ | |
70 | } ldiv_t; | |
e518937a UD |
71 | # define __ldiv_t_defined 1 |
72 | #endif | |
28f540f4 | 73 | |
ec751a23 | 74 | #if defined __USE_ISOC99 && !defined __lldiv_t_defined |
59dd8641 | 75 | /* Returned by `lldiv'. */ |
7782d0bf | 76 | __extension__ typedef struct |
59dd8641 RM |
77 | { |
78 | long long int quot; /* Quotient. */ | |
79 | long long int rem; /* Remainder. */ | |
80 | } lldiv_t; | |
e518937a | 81 | # define __lldiv_t_defined 1 |
59dd8641 RM |
82 | #endif |
83 | ||
28f540f4 RM |
84 | |
85 | /* The largest number rand will return (same as INT_MAX). */ | |
86 | #define RAND_MAX 2147483647 | |
87 | ||
88 | ||
89 | /* We define these the same for all machines. | |
90 | Changes from this to the outside world should be done in `_exit'. */ | |
91 | #define EXIT_FAILURE 1 /* Failing exit status. */ | |
92 | #define EXIT_SUCCESS 0 /* Successful exit status. */ | |
93 | ||
94 | ||
0200214b RM |
95 | /* Maximum length of a multibyte character in the current locale. */ |
96 | #define MB_CUR_MAX (__ctype_get_mb_cur_max ()) | |
0476597b | 97 | extern size_t __ctype_get_mb_cur_max (void) __THROW __wur; |
28f540f4 RM |
98 | |
99 | ||
100 | /* Convert a string to a floating-point number. */ | |
a784e502 | 101 | extern double atof (const char *__nptr) |
0476597b | 102 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
28f540f4 | 103 | /* Convert a string to an integer. */ |
a784e502 | 104 | extern int atoi (const char *__nptr) |
0476597b | 105 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
28f540f4 | 106 | /* Convert a string to a long integer. */ |
a784e502 | 107 | extern long int atol (const char *__nptr) |
0476597b | 108 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
28f540f4 | 109 | |
acd7f096 | 110 | #ifdef __USE_ISOC99 |
fb4dfa0c | 111 | /* Convert a string to a long long integer. */ |
a784e502 | 112 | __extension__ extern long long int atoll (const char *__nptr) |
0476597b | 113 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
7cc27f44 UD |
114 | #endif |
115 | ||
28f540f4 | 116 | /* Convert a string to a floating-point number. */ |
a784e502 | 117 | extern double strtod (const char *__restrict __nptr, |
0476597b | 118 | char **__restrict __endptr) |
c0baea34 | 119 | __THROW __nonnull ((1)); |
28f540f4 | 120 | |
ec751a23 | 121 | #ifdef __USE_ISOC99 |
28f540f4 | 122 | /* Likewise for `float' and `long double' sizes of floating-point numbers. */ |
a784e502 | 123 | extern float strtof (const char *__restrict __nptr, |
c0baea34 | 124 | char **__restrict __endptr) __THROW __nonnull ((1)); |
2f6d1f1b | 125 | |
a784e502 | 126 | extern long double strtold (const char *__restrict __nptr, |
be27d08c | 127 | char **__restrict __endptr) |
c0baea34 | 128 | __THROW __nonnull ((1)); |
28f540f4 RM |
129 | #endif |
130 | ||
97255170 JM |
131 | /* Likewise for '_FloatN' and '_FloatNx'. */ |
132 | ||
133 | #if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
134 | extern _Float16 strtof16 (const char *__restrict __nptr, | |
135 | char **__restrict __endptr) | |
136 | __THROW __nonnull ((1)); | |
137 | #endif | |
138 | ||
139 | #if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
140 | extern _Float32 strtof32 (const char *__restrict __nptr, | |
141 | char **__restrict __endptr) | |
142 | __THROW __nonnull ((1)); | |
143 | #endif | |
144 | ||
145 | #if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
146 | extern _Float64 strtof64 (const char *__restrict __nptr, | |
147 | char **__restrict __endptr) | |
148 | __THROW __nonnull ((1)); | |
149 | #endif | |
150 | ||
45f39d45 | 151 | #if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) |
45f39d45 | 152 | extern _Float128 strtof128 (const char *__restrict __nptr, |
97255170 JM |
153 | char **__restrict __endptr) |
154 | __THROW __nonnull ((1)); | |
155 | #endif | |
156 | ||
157 | #if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
158 | extern _Float32x strtof32x (const char *__restrict __nptr, | |
159 | char **__restrict __endptr) | |
160 | __THROW __nonnull ((1)); | |
161 | #endif | |
162 | ||
163 | #if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
164 | extern _Float64x strtof64x (const char *__restrict __nptr, | |
165 | char **__restrict __endptr) | |
166 | __THROW __nonnull ((1)); | |
167 | #endif | |
168 | ||
169 | #if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
170 | extern _Float128x strtof128x (const char *__restrict __nptr, | |
171 | char **__restrict __endptr) | |
45f39d45 PM |
172 | __THROW __nonnull ((1)); |
173 | #endif | |
174 | ||
28f540f4 | 175 | /* Convert a string to a long integer. */ |
a784e502 | 176 | extern long int strtol (const char *__restrict __nptr, |
be27d08c | 177 | char **__restrict __endptr, int __base) |
c0baea34 | 178 | __THROW __nonnull ((1)); |
28f540f4 | 179 | /* Convert a string to an unsigned long integer. */ |
a784e502 | 180 | extern unsigned long int strtoul (const char *__restrict __nptr, |
c1422e5b | 181 | char **__restrict __endptr, int __base) |
c0baea34 | 182 | __THROW __nonnull ((1)); |
28f540f4 | 183 | |
498afc54 | 184 | #ifdef __USE_MISC |
28f540f4 | 185 | /* Convert a string to a quadword integer. */ |
7782d0bf | 186 | __extension__ |
a784e502 | 187 | extern long long int strtoq (const char *__restrict __nptr, |
be27d08c | 188 | char **__restrict __endptr, int __base) |
c0baea34 | 189 | __THROW __nonnull ((1)); |
28f540f4 | 190 | /* Convert a string to an unsigned quadword integer. */ |
7782d0bf | 191 | __extension__ |
a784e502 | 192 | extern unsigned long long int strtouq (const char *__restrict __nptr, |
c1422e5b | 193 | char **__restrict __endptr, int __base) |
c0baea34 | 194 | __THROW __nonnull ((1)); |
acd7f096 | 195 | #endif /* Use misc. */ |
28f540f4 | 196 | |
acd7f096 | 197 | #ifdef __USE_ISOC99 |
76060ec0 | 198 | /* Convert a string to a quadword integer. */ |
7782d0bf | 199 | __extension__ |
a784e502 | 200 | extern long long int strtoll (const char *__restrict __nptr, |
be27d08c | 201 | char **__restrict __endptr, int __base) |
c0baea34 | 202 | __THROW __nonnull ((1)); |
76060ec0 | 203 | /* Convert a string to an unsigned quadword integer. */ |
7782d0bf | 204 | __extension__ |
a784e502 | 205 | extern unsigned long long int strtoull (const char *__restrict __nptr, |
c1422e5b | 206 | char **__restrict __endptr, int __base) |
c0baea34 | 207 | __THROW __nonnull ((1)); |
6a57d931 | 208 | #endif /* ISO C99 or use MISC. */ |
76060ec0 | 209 | |
6962682f | 210 | /* Convert a floating-point number to a string. */ |
0175c9e9 | 211 | #if __GLIBC_USE (IEC_60559_BFP_EXT_C2X) |
6962682f GG |
212 | extern int strfromd (char *__dest, size_t __size, const char *__format, |
213 | double __f) | |
214 | __THROW __nonnull ((3)); | |
215 | ||
216 | extern int strfromf (char *__dest, size_t __size, const char *__format, | |
217 | float __f) | |
218 | __THROW __nonnull ((3)); | |
219 | ||
220 | extern int strfroml (char *__dest, size_t __size, const char *__format, | |
221 | long double __f) | |
222 | __THROW __nonnull ((3)); | |
223 | #endif | |
224 | ||
97255170 JM |
225 | #if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT) |
226 | extern int strfromf16 (char *__dest, size_t __size, const char * __format, | |
227 | _Float16 __f) | |
228 | __THROW __nonnull ((3)); | |
229 | #endif | |
230 | ||
231 | #if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
232 | extern int strfromf32 (char *__dest, size_t __size, const char * __format, | |
233 | _Float32 __f) | |
234 | __THROW __nonnull ((3)); | |
235 | #endif | |
236 | ||
237 | #if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
238 | extern int strfromf64 (char *__dest, size_t __size, const char * __format, | |
239 | _Float64 __f) | |
240 | __THROW __nonnull ((3)); | |
241 | #endif | |
242 | ||
cf2046ec GG |
243 | #if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) |
244 | extern int strfromf128 (char *__dest, size_t __size, const char * __format, | |
245 | _Float128 __f) | |
246 | __THROW __nonnull ((3)); | |
247 | #endif | |
248 | ||
97255170 JM |
249 | #if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT) |
250 | extern int strfromf32x (char *__dest, size_t __size, const char * __format, | |
251 | _Float32x __f) | |
252 | __THROW __nonnull ((3)); | |
253 | #endif | |
254 | ||
255 | #if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
256 | extern int strfromf64x (char *__dest, size_t __size, const char * __format, | |
257 | _Float64x __f) | |
258 | __THROW __nonnull ((3)); | |
259 | #endif | |
260 | ||
261 | #if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT) | |
262 | extern int strfromf128x (char *__dest, size_t __size, const char * __format, | |
263 | _Float128x __f) | |
264 | __THROW __nonnull ((3)); | |
265 | #endif | |
266 | ||
76060ec0 | 267 | |
0501d603 | 268 | #ifdef __USE_GNU |
f0be25b6 ZW |
269 | /* Parallel versions of the functions above which take the locale to |
270 | use as an additional parameter. These are GNU extensions inspired | |
271 | by the POSIX.1-2008 extended locale API. */ | |
272 | # include <bits/types/locale_t.h> | |
273 | ||
a784e502 | 274 | extern long int strtol_l (const char *__restrict __nptr, |
1ab62b32 | 275 | char **__restrict __endptr, int __base, |
af85385f | 276 | locale_t __loc) __THROW __nonnull ((1, 4)); |
0501d603 | 277 | |
a784e502 | 278 | extern unsigned long int strtoul_l (const char *__restrict __nptr, |
1ab62b32 | 279 | char **__restrict __endptr, |
af85385f | 280 | int __base, locale_t __loc) |
c0baea34 | 281 | __THROW __nonnull ((1, 4)); |
0501d603 | 282 | |
7782d0bf | 283 | __extension__ |
a784e502 | 284 | extern long long int strtoll_l (const char *__restrict __nptr, |
1ab62b32 | 285 | char **__restrict __endptr, int __base, |
af85385f | 286 | locale_t __loc) |
c0baea34 | 287 | __THROW __nonnull ((1, 4)); |
0501d603 | 288 | |
7782d0bf | 289 | __extension__ |
a784e502 | 290 | extern unsigned long long int strtoull_l (const char *__restrict __nptr, |
1ab62b32 | 291 | char **__restrict __endptr, |
af85385f | 292 | int __base, locale_t __loc) |
c0baea34 | 293 | __THROW __nonnull ((1, 4)); |
0501d603 | 294 | |
a784e502 | 295 | extern double strtod_l (const char *__restrict __nptr, |
af85385f | 296 | char **__restrict __endptr, locale_t __loc) |
c0baea34 | 297 | __THROW __nonnull ((1, 3)); |
0501d603 | 298 | |
a784e502 | 299 | extern float strtof_l (const char *__restrict __nptr, |
af85385f | 300 | char **__restrict __endptr, locale_t __loc) |
c0baea34 | 301 | __THROW __nonnull ((1, 3)); |
0501d603 | 302 | |
a784e502 | 303 | extern long double strtold_l (const char *__restrict __nptr, |
1ab62b32 | 304 | char **__restrict __endptr, |
af85385f | 305 | locale_t __loc) |
c0baea34 | 306 | __THROW __nonnull ((1, 3)); |
45f39d45 | 307 | |
97255170 JM |
308 | # if __HAVE_FLOAT16 |
309 | extern _Float16 strtof16_l (const char *__restrict __nptr, | |
310 | char **__restrict __endptr, | |
311 | locale_t __loc) | |
312 | __THROW __nonnull ((1, 3)); | |
313 | # endif | |
314 | ||
315 | # if __HAVE_FLOAT32 | |
316 | extern _Float32 strtof32_l (const char *__restrict __nptr, | |
317 | char **__restrict __endptr, | |
318 | locale_t __loc) | |
319 | __THROW __nonnull ((1, 3)); | |
320 | # endif | |
321 | ||
322 | # if __HAVE_FLOAT64 | |
323 | extern _Float64 strtof64_l (const char *__restrict __nptr, | |
324 | char **__restrict __endptr, | |
325 | locale_t __loc) | |
326 | __THROW __nonnull ((1, 3)); | |
327 | # endif | |
328 | ||
45f39d45 PM |
329 | # if __HAVE_FLOAT128 |
330 | extern _Float128 strtof128_l (const char *__restrict __nptr, | |
331 | char **__restrict __endptr, | |
af85385f | 332 | locale_t __loc) |
45f39d45 PM |
333 | __THROW __nonnull ((1, 3)); |
334 | # endif | |
97255170 JM |
335 | |
336 | # if __HAVE_FLOAT32X | |
337 | extern _Float32x strtof32x_l (const char *__restrict __nptr, | |
338 | char **__restrict __endptr, | |
339 | locale_t __loc) | |
340 | __THROW __nonnull ((1, 3)); | |
341 | # endif | |
342 | ||
343 | # if __HAVE_FLOAT64X | |
344 | extern _Float64x strtof64x_l (const char *__restrict __nptr, | |
345 | char **__restrict __endptr, | |
346 | locale_t __loc) | |
347 | __THROW __nonnull ((1, 3)); | |
348 | # endif | |
349 | ||
350 | # if __HAVE_FLOAT128X | |
351 | extern _Float128x strtof128x_l (const char *__restrict __nptr, | |
352 | char **__restrict __endptr, | |
353 | locale_t __loc) | |
354 | __THROW __nonnull ((1, 3)); | |
355 | # endif | |
0501d603 UD |
356 | #endif /* GNU */ |
357 | ||
f0bf9cb9 | 358 | |
07c416ed | 359 | #ifdef __USE_EXTERN_INLINES |
b037a293 | 360 | __extern_inline int |
a784e502 | 361 | __NTH (atoi (const char *__nptr)) |
2604afb1 UD |
362 | { |
363 | return (int) strtol (__nptr, (char **) NULL, 10); | |
364 | } | |
b037a293 | 365 | __extern_inline long int |
a784e502 | 366 | __NTH (atol (const char *__nptr)) |
2604afb1 UD |
367 | { |
368 | return strtol (__nptr, (char **) NULL, 10); | |
369 | } | |
370 | ||
acd7f096 | 371 | # ifdef __USE_ISOC99 |
b037a293 | 372 | __extension__ __extern_inline long long int |
a784e502 | 373 | __NTH (atoll (const char *__nptr)) |
2604afb1 UD |
374 | { |
375 | return strtoll (__nptr, (char **) NULL, 10); | |
376 | } | |
377 | # endif | |
0c6cee5d | 378 | #endif /* Optimizing and Inlining. */ |
28f540f4 RM |
379 | |
380 | ||
498afc54 | 381 | #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
bbed653c RM |
382 | /* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant |
383 | digit first. Returns a pointer to static storage overwritten by the | |
384 | next call. */ | |
0476597b | 385 | extern char *l64a (long int __n) __THROW __wur; |
bbed653c | 386 | |
036cc82f | 387 | /* Read a number from a string S in base 64 as above. */ |
a784e502 | 388 | extern long int a64l (const char *__s) |
0476597b | 389 | __THROW __attribute_pure__ __nonnull ((1)) __wur; |
28f540f4 | 390 | |
acd7f096 | 391 | #endif /* Use misc || extended X/Open. */ |
b20e47cb | 392 | |
ed9a38e2 | 393 | #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
dfd2257a | 394 | # include <sys/types.h> /* we need int32_t... */ |
b20e47cb | 395 | |
28f540f4 RM |
396 | /* These are the functions that actually do things. The `random', `srandom', |
397 | `initstate' and `setstate' functions are those from BSD Unices. | |
398 | The `rand' and `srand' functions are required by the ANSI standard. | |
399 | We provide both interfaces to the same random number generator. */ | |
354b98cd | 400 | /* Return a random long integer between 0 and 2^31-1 inclusive. */ |
61f9d0a3 | 401 | extern long int random (void) __THROW; |
9ebb936d | 402 | |
28f540f4 | 403 | /* Seed the random number generator with the given number. */ |
c1422e5b | 404 | extern void srandom (unsigned int __seed) __THROW; |
28f540f4 RM |
405 | |
406 | /* Initialize the random number generator to use state buffer STATEBUF, | |
407 | of length STATELEN, and seed it with SEED. Optimal lengths are 8, 16, | |
408 | 32, 64, 128 and 256, the bigger the better; values less than 8 will | |
409 | cause an error and values greater than 256 will be rounded down. */ | |
9323b58f | 410 | extern char *initstate (unsigned int __seed, char *__statebuf, |
be27d08c | 411 | size_t __statelen) __THROW __nonnull ((2)); |
9ebb936d | 412 | |
28f540f4 RM |
413 | /* Switch the random number generator to state buffer STATEBUF, |
414 | which should have been previously initialized by `initstate'. */ | |
be27d08c | 415 | extern char *setstate (char *__statebuf) __THROW __nonnull ((1)); |
28f540f4 | 416 | |
60478656 | 417 | |
2604afb1 | 418 | # ifdef __USE_MISC |
60478656 RM |
419 | /* Reentrant versions of the `random' family of functions. |
420 | These functions all use the following data structure to contain | |
421 | state, rather than global state variables. */ | |
422 | ||
423 | struct random_data | |
424 | { | |
b20e47cb RM |
425 | int32_t *fptr; /* Front pointer. */ |
426 | int32_t *rptr; /* Rear pointer. */ | |
427 | int32_t *state; /* Array of state values. */ | |
60478656 RM |
428 | int rand_type; /* Type of random number generator. */ |
429 | int rand_deg; /* Degree of random number generator. */ | |
430 | int rand_sep; /* Distance between front and rear. */ | |
b20e47cb | 431 | int32_t *end_ptr; /* Pointer behind state table. */ |
60478656 RM |
432 | }; |
433 | ||
c1422e5b | 434 | extern int random_r (struct random_data *__restrict __buf, |
be27d08c | 435 | int32_t *__restrict __result) __THROW __nonnull ((1, 2)); |
8a523922 | 436 | |
be27d08c UD |
437 | extern int srandom_r (unsigned int __seed, struct random_data *__buf) |
438 | __THROW __nonnull ((2)); | |
8a523922 | 439 | |
9323b58f | 440 | extern int initstate_r (unsigned int __seed, char *__restrict __statebuf, |
c1422e5b | 441 | size_t __statelen, |
be27d08c UD |
442 | struct random_data *__restrict __buf) |
443 | __THROW __nonnull ((2, 4)); | |
8a523922 | 444 | |
9323b58f | 445 | extern int setstate_r (char *__restrict __statebuf, |
be27d08c UD |
446 | struct random_data *__restrict __buf) |
447 | __THROW __nonnull ((1, 2)); | |
2604afb1 | 448 | # endif /* Use misc. */ |
acd7f096 | 449 | #endif /* Use extended X/Open || misc. */ |
60478656 RM |
450 | |
451 | ||
2c6fe0bd | 452 | /* Return a random integer between 0 and RAND_MAX inclusive. */ |
c1422e5b | 453 | extern int rand (void) __THROW; |
2c6fe0bd | 454 | /* Seed the random number generator with the given number. */ |
c1422e5b | 455 | extern void srand (unsigned int __seed) __THROW; |
2c6fe0bd | 456 | |
b098852a | 457 | #ifdef __USE_POSIX199506 |
47707456 | 458 | /* Reentrant interface according to POSIX.1. */ |
c1422e5b | 459 | extern int rand_r (unsigned int *__seed) __THROW; |
47707456 UD |
460 | #endif |
461 | ||
2c6fe0bd | 462 | |
498afc54 | 463 | #if defined __USE_MISC || defined __USE_XOPEN |
60478656 RM |
464 | /* System V style 48-bit random number generator functions. */ |
465 | ||
2c6fe0bd | 466 | /* Return non-negative, double-precision floating-point value in [0.0,1.0). */ |
c1422e5b | 467 | extern double drand48 (void) __THROW; |
be27d08c | 468 | extern double erand48 (unsigned short int __xsubi[3]) __THROW __nonnull ((1)); |
2c6fe0bd UD |
469 | |
470 | /* Return non-negative, long integer in [0,2^31). */ | |
c1422e5b | 471 | extern long int lrand48 (void) __THROW; |
be27d08c UD |
472 | extern long int nrand48 (unsigned short int __xsubi[3]) |
473 | __THROW __nonnull ((1)); | |
2c6fe0bd UD |
474 | |
475 | /* Return signed, long integers in [-2^31,2^31). */ | |
c1422e5b | 476 | extern long int mrand48 (void) __THROW; |
be27d08c UD |
477 | extern long int jrand48 (unsigned short int __xsubi[3]) |
478 | __THROW __nonnull ((1)); | |
2c6fe0bd UD |
479 | |
480 | /* Seed random number generator. */ | |
c1422e5b | 481 | extern void srand48 (long int __seedval) __THROW; |
be27d08c UD |
482 | extern unsigned short int *seed48 (unsigned short int __seed16v[3]) |
483 | __THROW __nonnull ((1)); | |
484 | extern void lcong48 (unsigned short int __param[7]) __THROW __nonnull ((1)); | |
2c6fe0bd | 485 | |
d17c01f9 UD |
486 | # ifdef __USE_MISC |
487 | /* Data structure for communication with thread safe versions. This | |
488 | type is to be regarded as opaque. It's only exported because users | |
489 | have to allocate objects of this type. */ | |
60478656 RM |
490 | struct drand48_data |
491 | { | |
d17c01f9 UD |
492 | unsigned short int __x[3]; /* Current state. */ |
493 | unsigned short int __old_x[3]; /* Old state. */ | |
494 | unsigned short int __c; /* Additive const. in congruential formula. */ | |
495 | unsigned short int __init; /* Flag for initializing. */ | |
828beb13 JM |
496 | __extension__ unsigned long long int __a; /* Factor in congruential |
497 | formula. */ | |
60478656 RM |
498 | }; |
499 | ||
500 | /* Return non-negative, double-precision floating-point value in [0.0,1.0). */ | |
c1422e5b | 501 | extern int drand48_r (struct drand48_data *__restrict __buffer, |
be27d08c | 502 | double *__restrict __result) __THROW __nonnull ((1, 2)); |
c1422e5b UD |
503 | extern int erand48_r (unsigned short int __xsubi[3], |
504 | struct drand48_data *__restrict __buffer, | |
be27d08c | 505 | double *__restrict __result) __THROW __nonnull ((1, 2)); |
2c6fe0bd | 506 | |
60478656 | 507 | /* Return non-negative, long integer in [0,2^31). */ |
c1422e5b | 508 | extern int lrand48_r (struct drand48_data *__restrict __buffer, |
be27d08c UD |
509 | long int *__restrict __result) |
510 | __THROW __nonnull ((1, 2)); | |
c1422e5b UD |
511 | extern int nrand48_r (unsigned short int __xsubi[3], |
512 | struct drand48_data *__restrict __buffer, | |
be27d08c UD |
513 | long int *__restrict __result) |
514 | __THROW __nonnull ((1, 2)); | |
2c6fe0bd | 515 | |
60478656 | 516 | /* Return signed, long integers in [-2^31,2^31). */ |
c1422e5b | 517 | extern int mrand48_r (struct drand48_data *__restrict __buffer, |
be27d08c UD |
518 | long int *__restrict __result) |
519 | __THROW __nonnull ((1, 2)); | |
c1422e5b UD |
520 | extern int jrand48_r (unsigned short int __xsubi[3], |
521 | struct drand48_data *__restrict __buffer, | |
be27d08c UD |
522 | long int *__restrict __result) |
523 | __THROW __nonnull ((1, 2)); | |
2c6fe0bd | 524 | |
60478656 | 525 | /* Seed random number generator. */ |
c1422e5b | 526 | extern int srand48_r (long int __seedval, struct drand48_data *__buffer) |
be27d08c | 527 | __THROW __nonnull ((2)); |
47f13fd4 | 528 | |
c1422e5b | 529 | extern int seed48_r (unsigned short int __seed16v[3], |
be27d08c | 530 | struct drand48_data *__buffer) __THROW __nonnull ((1, 2)); |
47f13fd4 | 531 | |
c1422e5b | 532 | extern int lcong48_r (unsigned short int __param[7], |
be27d08c UD |
533 | struct drand48_data *__buffer) |
534 | __THROW __nonnull ((1, 2)); | |
dfd2257a | 535 | # endif /* Use misc. */ |
acd7f096 | 536 | #endif /* Use misc or X/Open. */ |
28f540f4 | 537 | |
28f540f4 | 538 | /* Allocate SIZE bytes of memory. */ |
9bf8e29c AZ |
539 | extern void *malloc (size_t __size) __THROW __attribute_malloc__ |
540 | __attribute_alloc_size__ ((1)) __wur; | |
7ef90c15 | 541 | /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */ |
e9e9b245 | 542 | extern void *calloc (size_t __nmemb, size_t __size) |
9bf8e29c | 543 | __THROW __attribute_malloc__ __attribute_alloc_size__ ((1, 2)) __wur; |
7ef90c15 | 544 | |
28f540f4 | 545 | /* Re-allocate the previously allocated block |
c1422e5b | 546 | in PTR, making the new block SIZE bytes long. */ |
1c3e748e UD |
547 | /* __attribute_malloc__ is not used, because if realloc returns |
548 | the same pointer that was passed to it, aliasing needs to be allowed | |
549 | between objects pointed by the old and new pointers. */ | |
0476597b | 550 | extern void *realloc (void *__ptr, size_t __size) |
9bf8e29c | 551 | __THROW __attribute_warn_unused_result__ __attribute_alloc_size__ ((2)); |
2e0bbbfb | 552 | |
c1760eaf MS |
553 | /* Free a block allocated by `malloc', `realloc' or `calloc'. */ |
554 | extern void free (void *__ptr) __THROW; | |
555 | ||
2bda273a | 556 | #ifdef __USE_MISC |
2e0bbbfb DW |
557 | /* Re-allocate the previously allocated block in PTR, making the new |
558 | block large enough for NMEMB elements of SIZE bytes each. */ | |
559 | /* __attribute_malloc__ is not used, because if reallocarray returns | |
560 | the same pointer that was passed to it, aliasing needs to be allowed | |
561 | between objects pointed by the old and new pointers. */ | |
562 | extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size) | |
9bf8e29c | 563 | __THROW __attribute_warn_unused_result__ |
c1760eaf MS |
564 | __attribute_alloc_size__ ((2, 3)) |
565 | __attr_dealloc_free; | |
2e0bbbfb | 566 | |
c1760eaf MS |
567 | /* Add reallocarray as its own deallocator. */ |
568 | extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size) | |
569 | __THROW __attr_dealloc (reallocarray, 1); | |
570 | #endif | |
28f540f4 | 571 | |
acd7f096 | 572 | #ifdef __USE_MISC |
2604afb1 | 573 | # include <alloca.h> |
acd7f096 | 574 | #endif /* Use misc. */ |
28f540f4 | 575 | |
c589e093 | 576 | #if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K) \ |
498afc54 | 577 | || defined __USE_MISC |
28f540f4 | 578 | /* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */ |
9bf8e29c AZ |
579 | extern void *valloc (size_t __size) __THROW __attribute_malloc__ |
580 | __attribute_alloc_size__ ((1)) __wur; | |
28f540f4 RM |
581 | #endif |
582 | ||
0758ea0c | 583 | #ifdef __USE_XOPEN2K |
c8c73ac3 | 584 | /* Allocate memory of SIZE bytes with an alignment of ALIGNMENT. */ |
61f9d0a3 | 585 | extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size) |
5bcbe69f | 586 | __THROW __nonnull ((1)) __wur; |
0758ea0c | 587 | #endif |
28f540f4 | 588 | |
380d7e87 UD |
589 | #ifdef __USE_ISOC11 |
590 | /* ISO C variant of aligned allocation. */ | |
8b43a4cc | 591 | extern void *aligned_alloc (size_t __alignment, size_t __size) |
4be9b544 | 592 | __THROW __attribute_malloc__ __attribute_alloc_size__ ((2)) __wur; |
380d7e87 UD |
593 | #endif |
594 | ||
28f540f4 | 595 | /* Abort execution and generate a core-dump. */ |
c1422e5b | 596 | extern void abort (void) __THROW __attribute__ ((__noreturn__)); |
28f540f4 RM |
597 | |
598 | ||
599 | /* Register a function to be called when `exit' is called. */ | |
be27d08c | 600 | extern int atexit (void (*__func) (void)) __THROW __nonnull ((1)); |
610e67ed | 601 | |
4e9e7a35 | 602 | #if defined __USE_ISOC11 || defined __USE_ISOCXX11 |
610e67ed UD |
603 | /* Register a function to be called when `quick_exit' is called. */ |
604 | # ifdef __cplusplus | |
605 | extern "C++" int at_quick_exit (void (*__func) (void)) | |
606 | __THROW __asm ("at_quick_exit") __nonnull ((1)); | |
607 | # else | |
608 | extern int at_quick_exit (void (*__func) (void)) __THROW __nonnull ((1)); | |
609 | # endif | |
610 | #endif | |
28f540f4 RM |
611 | |
612 | #ifdef __USE_MISC | |
613 | /* Register a function to be called with the status | |
614 | given to `exit' and the given argument. */ | |
c1422e5b | 615 | extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg) |
be27d08c | 616 | __THROW __nonnull ((1)); |
28f540f4 RM |
617 | #endif |
618 | ||
619 | /* Call all functions registered with `atexit' and `on_exit', | |
610e67ed | 620 | in the reverse of the order in which they were registered, |
28f540f4 | 621 | perform stdio cleanup, and terminate program execution with STATUS. */ |
c1422e5b | 622 | extern void exit (int __status) __THROW __attribute__ ((__noreturn__)); |
610e67ed | 623 | |
4e9e7a35 | 624 | #if defined __USE_ISOC11 || defined __USE_ISOCXX11 |
610e67ed UD |
625 | /* Call all functions registered with `at_quick_exit' in the reverse |
626 | of the order in which they were registered and terminate program | |
627 | execution with STATUS. */ | |
628 | extern void quick_exit (int __status) __THROW __attribute__ ((__noreturn__)); | |
629 | #endif | |
28f540f4 | 630 | |
ec751a23 | 631 | #ifdef __USE_ISOC99 |
e518937a UD |
632 | /* Terminate the program with STATUS without calling any of the |
633 | functions registered with `atexit' or `on_exit'. */ | |
c1422e5b | 634 | extern void _Exit (int __status) __THROW __attribute__ ((__noreturn__)); |
e518937a UD |
635 | #endif |
636 | ||
28f540f4 RM |
637 | |
638 | /* Return the value of envariable NAME, or NULL if it doesn't exist. */ | |
a784e502 | 639 | extern char *getenv (const char *__name) __THROW __nonnull ((1)) __wur; |
28f540f4 | 640 | |
84b3fd84 | 641 | #ifdef __USE_GNU |
d68171ed UD |
642 | /* This function is similar to the above but returns NULL if the |
643 | programs is running with SUID or SGID enabled. */ | |
84b3fd84 | 644 | extern char *secure_getenv (const char *__name) |
0476597b | 645 | __THROW __nonnull ((1)) __wur; |
84b3fd84 | 646 | #endif |
d68171ed | 647 | |
498afc54 | 648 | #if defined __USE_MISC || defined __USE_XOPEN |
28f540f4 RM |
649 | /* The SVID says this is in <stdio.h>, but this seems a better place. */ |
650 | /* Put STRING, which is of the form "NAME=VALUE", in the environment. | |
651 | If there is no `=', remove NAME from the environment. */ | |
be27d08c | 652 | extern int putenv (char *__string) __THROW __nonnull ((1)); |
28f540f4 RM |
653 | #endif |
654 | ||
acd7f096 | 655 | #ifdef __USE_XOPEN2K |
28f540f4 RM |
656 | /* Set NAME to VALUE in the environment. |
657 | If REPLACE is nonzero, overwrite an existing value. */ | |
a784e502 | 658 | extern int setenv (const char *__name, const char *__value, int __replace) |
90692538 | 659 | __THROW __nonnull ((2)); |
196980f5 RM |
660 | |
661 | /* Remove the variable NAME from the environment. */ | |
a784e502 | 662 | extern int unsetenv (const char *__name) __THROW __nonnull ((1)); |
28f540f4 RM |
663 | #endif |
664 | ||
f0e44959 UD |
665 | #ifdef __USE_MISC |
666 | /* The `clearenv' was planned to be added to POSIX.1 but probably | |
667 | never made it. Nevertheless the POSIX.9 standard (POSIX bindings | |
668 | for Fortran 77) requires this function. */ | |
c1422e5b | 669 | extern int clearenv (void) __THROW; |
f0e44959 UD |
670 | #endif |
671 | ||
2c6fe0bd | 672 | |
52e96a80 | 673 | #if defined __USE_MISC \ |
9bde902c | 674 | || (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) |
2c6fe0bd UD |
675 | /* Generate a unique temporary file name from TEMPLATE. |
676 | The last six characters of TEMPLATE must be "XXXXXX"; | |
677 | they are replaced with a string that makes the file name unique. | |
349fa79f AJ |
678 | Always returns TEMPLATE, it's either a temporary file name or a null |
679 | string if it cannot get a unique file name. */ | |
680 | extern char *mktemp (char *__template) __THROW __nonnull ((1)); | |
f095bb72 | 681 | #endif |
2c6fe0bd | 682 | |
acd7f096 | 683 | #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 |
2c6fe0bd UD |
684 | /* Generate a unique temporary file name from TEMPLATE. |
685 | The last six characters of TEMPLATE must be "XXXXXX"; | |
686 | they are replaced with a string that makes the filename unique. | |
687 | Returns a file descriptor open on the file for reading and writing, | |
2c008571 UD |
688 | or -1 if it cannot create a uniquely-named file. |
689 | ||
7f3146e7 | 690 | This function is a possible cancellation point and therefore not |
2c008571 | 691 | marked with __THROW. */ |
85adf316 | 692 | # ifndef __USE_FILE_OFFSET64 |
0476597b | 693 | extern int mkstemp (char *__template) __nonnull ((1)) __wur; |
85adf316 UD |
694 | # else |
695 | # ifdef __REDIRECT | |
0476597b UD |
696 | extern int __REDIRECT (mkstemp, (char *__template), mkstemp64) |
697 | __nonnull ((1)) __wur; | |
85adf316 UD |
698 | # else |
699 | # define mkstemp mkstemp64 | |
700 | # endif | |
701 | # endif | |
702 | # ifdef __USE_LARGEFILE64 | |
0476597b | 703 | extern int mkstemp64 (char *__template) __nonnull ((1)) __wur; |
85adf316 | 704 | # endif |
2c6fe0bd UD |
705 | #endif |
706 | ||
7f3146e7 UD |
707 | #ifdef __USE_MISC |
708 | /* Similar to mkstemp, but the template can have a suffix after the | |
709 | XXXXXX. The length of the suffix is specified in the second | |
710 | parameter. | |
711 | ||
712 | This function is a possible cancellation point and therefore not | |
713 | marked with __THROW. */ | |
714 | # ifndef __USE_FILE_OFFSET64 | |
715 | extern int mkstemps (char *__template, int __suffixlen) __nonnull ((1)) __wur; | |
716 | # else | |
717 | # ifdef __REDIRECT | |
718 | extern int __REDIRECT (mkstemps, (char *__template, int __suffixlen), | |
719 | mkstemps64) __nonnull ((1)) __wur; | |
720 | # else | |
721 | # define mkstemps mkstemps64 | |
722 | # endif | |
723 | # endif | |
724 | # ifdef __USE_LARGEFILE64 | |
725 | extern int mkstemps64 (char *__template, int __suffixlen) | |
726 | __nonnull ((1)) __wur; | |
727 | # endif | |
728 | #endif | |
729 | ||
acd7f096 | 730 | #ifdef __USE_XOPEN2K8 |
2e65ca2b UD |
731 | /* Create a unique temporary directory from TEMPLATE. |
732 | The last six characters of TEMPLATE must be "XXXXXX"; | |
733 | they are replaced with a string that makes the directory name unique. | |
734 | Returns TEMPLATE, or a null pointer if it cannot get a unique name. | |
735 | The directory is created mode 700. */ | |
0476597b | 736 | extern char *mkdtemp (char *__template) __THROW __nonnull ((1)) __wur; |
2e65ca2b UD |
737 | #endif |
738 | ||
d7e23b02 UD |
739 | #ifdef __USE_GNU |
740 | /* Generate a unique temporary file name from TEMPLATE similar to | |
741 | mkstemp. But allow the caller to pass additional flags which are | |
742 | used in the open call to create the file.. | |
743 | ||
4c1423ed | 744 | This function is a possible cancellation point and therefore not |
d7e23b02 UD |
745 | marked with __THROW. */ |
746 | # ifndef __USE_FILE_OFFSET64 | |
747 | extern int mkostemp (char *__template, int __flags) __nonnull ((1)) __wur; | |
748 | # else | |
749 | # ifdef __REDIRECT | |
750 | extern int __REDIRECT (mkostemp, (char *__template, int __flags), mkostemp64) | |
751 | __nonnull ((1)) __wur; | |
752 | # else | |
753 | # define mkostemp mkostemp64 | |
754 | # endif | |
755 | # endif | |
756 | # ifdef __USE_LARGEFILE64 | |
757 | extern int mkostemp64 (char *__template, int __flags) __nonnull ((1)) __wur; | |
758 | # endif | |
3a83202d UD |
759 | |
760 | /* Similar to mkostemp, but the template can have a suffix after the | |
761 | XXXXXX. The length of the suffix is specified in the second | |
762 | parameter. | |
763 | ||
764 | This function is a possible cancellation point and therefore not | |
765 | marked with __THROW. */ | |
766 | # ifndef __USE_FILE_OFFSET64 | |
767 | extern int mkostemps (char *__template, int __suffixlen, int __flags) | |
768 | __nonnull ((1)) __wur; | |
769 | # else | |
770 | # ifdef __REDIRECT | |
771 | extern int __REDIRECT (mkostemps, (char *__template, int __suffixlen, | |
772 | int __flags), mkostemps64) | |
773 | __nonnull ((1)) __wur; | |
774 | # else | |
775 | # define mkostemps mkostemps64 | |
776 | # endif | |
777 | # endif | |
778 | # ifdef __USE_LARGEFILE64 | |
779 | extern int mkostemps64 (char *__template, int __suffixlen, int __flags) | |
780 | __nonnull ((1)) __wur; | |
781 | # endif | |
d7e23b02 UD |
782 | #endif |
783 | ||
2c6fe0bd | 784 | |
2c008571 UD |
785 | /* Execute the given line as a shell command. |
786 | ||
787 | This function is a cancellation point and therefore not marked with | |
788 | __THROW. */ | |
a784e502 | 789 | extern int system (const char *__command) __wur; |
28f540f4 RM |
790 | |
791 | ||
fa0bc87c RM |
792 | #ifdef __USE_GNU |
793 | /* Return a malloc'd string containing the canonical absolute name of the | |
11bf311e | 794 | existing named file. */ |
a784e502 | 795 | extern char *canonicalize_file_name (const char *__name) |
c1760eaf MS |
796 | __THROW __nonnull ((1)) __attribute_malloc__ |
797 | __attr_dealloc_free __wur; | |
fa0bc87c RM |
798 | #endif |
799 | ||
498afc54 | 800 | #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
b7674b11 UD |
801 | /* Return the canonical absolute name of file NAME. If RESOLVED is |
802 | null, the result is malloc'd; otherwise, if the canonical name is | |
803 | PATH_MAX chars or more, returns null with `errno' set to | |
804 | ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars, | |
805 | returns the name in RESOLVED. */ | |
a784e502 | 806 | extern char *realpath (const char *__restrict __name, |
0476597b | 807 | char *__restrict __resolved) __THROW __wur; |
fa0bc87c RM |
808 | #endif |
809 | ||
810 | ||
28f540f4 | 811 | /* Shorthand for type of comparison functions. */ |
60478656 | 812 | #ifndef __COMPAR_FN_T |
2604afb1 | 813 | # define __COMPAR_FN_T |
a784e502 | 814 | typedef int (*__compar_fn_t) (const void *, const void *); |
28f540f4 | 815 | |
2604afb1 | 816 | # ifdef __USE_GNU |
28f540f4 | 817 | typedef __compar_fn_t comparison_fn_t; |
2604afb1 | 818 | # endif |
28f540f4 | 819 | #endif |
e458144c | 820 | #ifdef __USE_GNU |
a784e502 | 821 | typedef int (*__compar_d_fn_t) (const void *, const void *, void *); |
e458144c | 822 | #endif |
28f540f4 RM |
823 | |
824 | /* Do a binary search for KEY in BASE, which consists of NMEMB elements | |
825 | of SIZE bytes each, using COMPAR to perform the comparisons. */ | |
a784e502 | 826 | extern void *bsearch (const void *__key, const void *__base, |
be27d08c | 827 | size_t __nmemb, size_t __size, __compar_fn_t __compar) |
0476597b | 828 | __nonnull ((1, 2, 5)) __wur; |
28f540f4 | 829 | |
41eda41d OB |
830 | #ifdef __USE_EXTERN_INLINES |
831 | # include <bits/stdlib-bsearch.h> | |
832 | #endif | |
833 | ||
28f540f4 RM |
834 | /* Sort NMEMB elements of BASE, of SIZE bytes each, |
835 | using COMPAR to perform the comparisons. */ | |
c1422e5b | 836 | extern void qsort (void *__base, size_t __nmemb, size_t __size, |
be27d08c | 837 | __compar_fn_t __compar) __nonnull ((1, 4)); |
e458144c UD |
838 | #ifdef __USE_GNU |
839 | extern void qsort_r (void *__base, size_t __nmemb, size_t __size, | |
840 | __compar_d_fn_t __compar, void *__arg) | |
841 | __nonnull ((1, 4)); | |
842 | #endif | |
28f540f4 RM |
843 | |
844 | ||
28f540f4 | 845 | /* Return the absolute value of X. */ |
0476597b UD |
846 | extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur; |
847 | extern long int labs (long int __x) __THROW __attribute__ ((__const__)) __wur; | |
7a5affeb | 848 | |
ec751a23 | 849 | #ifdef __USE_ISOC99 |
c1422e5b | 850 | __extension__ extern long long int llabs (long long int __x) |
0476597b | 851 | __THROW __attribute__ ((__const__)) __wur; |
59dd8641 | 852 | #endif |
28f540f4 RM |
853 | |
854 | ||
59dd8641 | 855 | /* Return the `div_t', `ldiv_t' or `lldiv_t' representation |
28f540f4 RM |
856 | of the value of NUMER over DENOM. */ |
857 | /* GCC may have built-ins for these someday. */ | |
c1422e5b | 858 | extern div_t div (int __numer, int __denom) |
0476597b | 859 | __THROW __attribute__ ((__const__)) __wur; |
c1422e5b | 860 | extern ldiv_t ldiv (long int __numer, long int __denom) |
0476597b | 861 | __THROW __attribute__ ((__const__)) __wur; |
7a5affeb | 862 | |
ec751a23 | 863 | #ifdef __USE_ISOC99 |
c1422e5b UD |
864 | __extension__ extern lldiv_t lldiv (long long int __numer, |
865 | long long int __denom) | |
0476597b | 866 | __THROW __attribute__ ((__const__)) __wur; |
59dd8641 | 867 | #endif |
28f540f4 RM |
868 | |
869 | ||
9bde902c | 870 | #if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) \ |
498afc54 | 871 | || defined __USE_MISC |
60478656 RM |
872 | /* Convert floating point numbers to strings. The returned values are |
873 | valid only until another call to the same function. */ | |
874 | ||
875 | /* Convert VALUE to a string with NDIGIT digits and return a pointer to | |
876 | this. Set *DECPT with the position of the decimal character and *SIGN | |
877 | with the sign of the number. */ | |
c1422e5b | 878 | extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt, |
0476597b | 879 | int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur; |
60478656 RM |
880 | |
881 | /* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT | |
882 | with the position of the decimal character and *SIGN with the sign of | |
883 | the number. */ | |
c1422e5b | 884 | extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt, |
0476597b | 885 | int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur; |
60478656 RM |
886 | |
887 | /* If possible convert VALUE to a string with NDIGIT significant digits. | |
888 | Otherwise use exponential representation. The resulting string will | |
889 | be written to BUF. */ | |
be27d08c | 890 | extern char *gcvt (double __value, int __ndigit, char *__buf) |
0476597b | 891 | __THROW __nonnull ((3)) __wur; |
4220c3ef | 892 | #endif |
60478656 | 893 | |
4220c3ef | 894 | #ifdef __USE_MISC |
2064087b | 895 | /* Long double versions of above functions. */ |
c1422e5b | 896 | extern char *qecvt (long double __value, int __ndigit, |
be27d08c | 897 | int *__restrict __decpt, int *__restrict __sign) |
0476597b | 898 | __THROW __nonnull ((3, 4)) __wur; |
c1422e5b | 899 | extern char *qfcvt (long double __value, int __ndigit, |
be27d08c | 900 | int *__restrict __decpt, int *__restrict __sign) |
0476597b | 901 | __THROW __nonnull ((3, 4)) __wur; |
be27d08c | 902 | extern char *qgcvt (long double __value, int __ndigit, char *__buf) |
0476597b | 903 | __THROW __nonnull ((3)) __wur; |
2064087b RM |
904 | |
905 | ||
60478656 RM |
906 | /* Reentrant version of the functions above which provide their own |
907 | buffers. */ | |
c1422e5b UD |
908 | extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt, |
909 | int *__restrict __sign, char *__restrict __buf, | |
be27d08c | 910 | size_t __len) __THROW __nonnull ((3, 4, 5)); |
c1422e5b UD |
911 | extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt, |
912 | int *__restrict __sign, char *__restrict __buf, | |
be27d08c | 913 | size_t __len) __THROW __nonnull ((3, 4, 5)); |
c1422e5b UD |
914 | |
915 | extern int qecvt_r (long double __value, int __ndigit, | |
916 | int *__restrict __decpt, int *__restrict __sign, | |
be27d08c UD |
917 | char *__restrict __buf, size_t __len) |
918 | __THROW __nonnull ((3, 4, 5)); | |
c1422e5b UD |
919 | extern int qfcvt_r (long double __value, int __ndigit, |
920 | int *__restrict __decpt, int *__restrict __sign, | |
be27d08c UD |
921 | char *__restrict __buf, size_t __len) |
922 | __THROW __nonnull ((3, 4, 5)); | |
4220c3ef | 923 | #endif /* misc */ |
60478656 RM |
924 | |
925 | ||
28f540f4 RM |
926 | /* Return the length of the multibyte character |
927 | in S, which is no longer than N. */ | |
a065ceff | 928 | extern int mblen (const char *__s, size_t __n) __THROW; |
28f540f4 RM |
929 | /* Return the length of the given multibyte character, |
930 | putting its `wchar_t' representation in *PWC. */ | |
c1422e5b | 931 | extern int mbtowc (wchar_t *__restrict __pwc, |
a065ceff | 932 | const char *__restrict __s, size_t __n) __THROW; |
28f540f4 RM |
933 | /* Put the multibyte character represented |
934 | by WCHAR in S, returning its length. */ | |
a065ceff | 935 | extern int wctomb (char *__s, wchar_t __wchar) __THROW; |
28f540f4 | 936 | |
28f540f4 RM |
937 | |
938 | /* Convert a multibyte string to a wide char string. */ | |
c1422e5b | 939 | extern size_t mbstowcs (wchar_t *__restrict __pwcs, |
06febd8c | 940 | const char *__restrict __s, size_t __n) __THROW |
61af4bbb | 941 | __attr_access ((__read_only__, 2)); |
28f540f4 | 942 | /* Convert a wide char string to multibyte string. */ |
c1422e5b | 943 | extern size_t wcstombs (char *__restrict __s, |
a784e502 | 944 | const wchar_t *__restrict __pwcs, size_t __n) |
06febd8c | 945 | __THROW |
e938c027 SP |
946 | __fortified_attr_access (__write_only__, 1, 3) |
947 | __attr_access ((__read_only__, 2)); | |
28f540f4 | 948 | |
498afc54 | 949 | #ifdef __USE_MISC |
857fa1b8 RM |
950 | /* Determine whether the string value of RESPONSE matches the affirmation |
951 | or negative response expression as specified by the LC_MESSAGES category | |
952 | in the program's current locale. Returns 1 if affirmative, 0 if | |
953 | negative, and -1 if not matching. */ | |
a784e502 | 954 | extern int rpmatch (const char *__response) __THROW __nonnull ((1)) __wur; |
857fa1b8 RM |
955 | #endif |
956 | ||
957 | ||
f095bb72 | 958 | #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 |
2064087b RM |
959 | /* Parse comma separated suboption from *OPTIONP and match against |
960 | strings in TOKENS. If found return index and set *VALUEP to | |
961 | optional value introduced by an equal sign. If the suboption is | |
962 | not part of TOKENS return in *VALUEP beginning of unknown | |
963 | suboption. On exit *OPTIONP is set to the beginning of the next | |
2604afb1 | 964 | token or at the terminating NUL character. */ |
c1422e5b | 965 | extern int getsubopt (char **__restrict __optionp, |
a784e502 | 966 | char *const *__restrict __tokens, |
be27d08c | 967 | char **__restrict __valuep) |
0476597b | 968 | __THROW __nonnull ((1, 2, 3)) __wur; |
2064087b RM |
969 | #endif |
970 | ||
971 | ||
6591c335 UD |
972 | /* X/Open pseudo terminal handling. */ |
973 | ||
f095bb72 | 974 | #ifdef __USE_XOPEN2KXSI |
0101a56f | 975 | /* Return a master pseudo-terminal handle. */ |
0476597b | 976 | extern int posix_openpt (int __oflag) __wur; |
0101a56f UD |
977 | #endif |
978 | ||
0014680d | 979 | #ifdef __USE_XOPEN_EXTENDED |
6591c335 UD |
980 | /* The next four functions all take a master pseudo-tty fd and |
981 | perform an operation on the associated slave: */ | |
982 | ||
983 | /* Chown the slave to the calling user. */ | |
c1422e5b | 984 | extern int grantpt (int __fd) __THROW; |
6591c335 UD |
985 | |
986 | /* Release an internal lock so the slave can be opened. | |
987 | Call after grantpt(). */ | |
c1422e5b | 988 | extern int unlockpt (int __fd) __THROW; |
6591c335 | 989 | |
6f65e668 | 990 | /* Return the pathname of the pseudo terminal slave associated with |
4bca4c17 UD |
991 | the master FD is open on, or NULL on errors. |
992 | The returned storage is good until the next call to this function. */ | |
0476597b | 993 | extern char *ptsname (int __fd) __THROW __wur; |
2c6fe0bd UD |
994 | #endif |
995 | ||
6591c335 | 996 | #ifdef __USE_GNU |
4bca4c17 UD |
997 | /* Store at most BUFLEN characters of the pathname of the slave pseudo |
998 | terminal associated with the master FD is open on in BUF. | |
999 | Return 0 on success, otherwise an error number. */ | |
be27d08c | 1000 | extern int ptsname_r (int __fd, char *__buf, size_t __buflen) |
e938c027 | 1001 | __THROW __nonnull ((2)) __fortified_attr_access (__write_only__, 2, 3); |
6591c335 | 1002 | |
4bca4c17 | 1003 | /* Open a master pseudo terminal and return its file descriptor. */ |
f1c30c98 | 1004 | extern int getpt (void); |
6591c335 | 1005 | #endif |
2c6fe0bd | 1006 | |
498afc54 | 1007 | #ifdef __USE_MISC |
b2277c15 RM |
1008 | /* Put the 1 minute, 5 minute and 15 minute load averages into the first |
1009 | NELEM elements of LOADAVG. Return the number written (never more than | |
1010 | three, but may be less than NELEM), or -1 if an error occurred. */ | |
be27d08c UD |
1011 | extern int getloadavg (double __loadavg[], int __nelem) |
1012 | __THROW __nonnull ((1)); | |
b2277c15 RM |
1013 | #endif |
1014 | ||
4242d968 JM |
1015 | #if defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K |
1016 | /* Return the index into the active-logins file (utmp) for | |
1017 | the controlling terminal. */ | |
1018 | extern int ttyslot (void) __THROW; | |
1019 | #endif | |
1020 | ||
f62c8abc | 1021 | #include <bits/stdlib-float.h> |
b799f91d UD |
1022 | |
1023 | /* Define some macros helping to catch buffer overflows. */ | |
5ac3ea17 | 1024 | #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function |
b799f91d UD |
1025 | # include <bits/stdlib.h> |
1026 | #endif | |
e4a39992 GG |
1027 | |
1028 | #include <bits/floatn.h> | |
e2239af3 | 1029 | #if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 |
c6251f03 RM |
1030 | # include <bits/stdlib-ldbl.h> |
1031 | #endif | |
b799f91d | 1032 | |
28f540f4 RM |
1033 | __END_DECLS |
1034 | ||
1035 | #endif /* stdlib.h */ |