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19361cb7 | 1 | /* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. |
ba1ffaa1 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ba1ffaa1 UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | 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 | |
12 | Library General Public License for more details. | |
28f540f4 | 13 | |
ba1ffaa1 UD |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
28f540f4 RM |
18 | |
19 | /* | |
377a515b | 20 | * ISO C Standard: 4.10 GENERAL UTILITIES <stdlib.h> |
28f540f4 RM |
21 | */ |
22 | ||
23 | #ifndef _STDLIB_H | |
28f540f4 | 24 | #define _STDLIB_H 1 |
5107cf1d | 25 | |
28f540f4 RM |
26 | #include <features.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 | ||
28f540f4 RM |
34 | __BEGIN_DECLS |
35 | ||
36 | /* Returned by `div'. */ | |
37 | typedef struct | |
38 | { | |
39 | int quot; /* Quotient. */ | |
40 | int rem; /* Remainder. */ | |
41 | } div_t; | |
42 | ||
43 | /* Returned by `ldiv'. */ | |
44 | typedef struct | |
45 | { | |
46 | long int quot; /* Quotient. */ | |
47 | long int rem; /* Remainder. */ | |
48 | } ldiv_t; | |
49 | ||
377a515b | 50 | #ifdef __USE_ISOC9X |
59dd8641 RM |
51 | /* Returned by `lldiv'. */ |
52 | typedef struct | |
53 | { | |
54 | long long int quot; /* Quotient. */ | |
55 | long long int rem; /* Remainder. */ | |
56 | } lldiv_t; | |
57 | #endif | |
58 | ||
28f540f4 RM |
59 | |
60 | /* The largest number rand will return (same as INT_MAX). */ | |
61 | #define RAND_MAX 2147483647 | |
62 | ||
63 | ||
64 | /* We define these the same for all machines. | |
65 | Changes from this to the outside world should be done in `_exit'. */ | |
66 | #define EXIT_FAILURE 1 /* Failing exit status. */ | |
67 | #define EXIT_SUCCESS 0 /* Successful exit status. */ | |
68 | ||
69 | ||
0200214b RM |
70 | /* Maximum length of a multibyte character in the current locale. */ |
71 | #define MB_CUR_MAX (__ctype_get_mb_cur_max ()) | |
72 | extern int __ctype_get_mb_cur_max __P ((void)); | |
28f540f4 RM |
73 | |
74 | ||
75 | /* Convert a string to a floating-point number. */ | |
76 | extern double atof __P ((__const char *__nptr)); | |
77 | /* Convert a string to an integer. */ | |
78 | extern int atoi __P ((__const char *__nptr)); | |
79 | /* Convert a string to a long integer. */ | |
80 | extern long int atol __P ((__const char *__nptr)); | |
81 | ||
2f6d1f1b | 82 | #if defined __USE_ISOC9X || (defined __GNUC__ && defined __USE_MISC) |
7cc27f44 UD |
83 | /* These functions will part of the standard C library in ISO C 9X. */ |
84 | extern long long int atoll __P ((__const char *__nptr)); | |
85 | #endif | |
86 | ||
28f540f4 | 87 | /* Convert a string to a floating-point number. */ |
2f6d1f1b UD |
88 | extern double strtod __P ((__const char *__restrict __nptr, |
89 | char **__restrict __endptr)); | |
28f540f4 RM |
90 | |
91 | #ifdef __USE_GNU | |
92 | /* Likewise for `float' and `long double' sizes of floating-point numbers. */ | |
2f6d1f1b UD |
93 | extern float strtof __P ((__const char *__restrict __nptr, |
94 | char **__restrict __endptr)); | |
95 | ||
96 | extern __long_double_t strtold __P ((__const char *__restrict __nptr, | |
97 | char **__restrict __endptr)); | |
28f540f4 RM |
98 | #endif |
99 | ||
100 | /* Convert a string to a long integer. */ | |
2f6d1f1b UD |
101 | extern long int strtol __P ((__const char *__restrict __nptr, |
102 | char **__restrict __endptr, int __base)); | |
28f540f4 | 103 | /* Convert a string to an unsigned long integer. */ |
2f6d1f1b UD |
104 | extern unsigned long int strtoul __P ((__const char *__restrict __nptr, |
105 | char **__restrict __endptr, | |
106 | int __base)); | |
28f540f4 | 107 | |
2f6d1f1b | 108 | #if defined __GNUC__ && defined __USE_BSD |
28f540f4 | 109 | /* Convert a string to a quadword integer. */ |
2f6d1f1b UD |
110 | extern long long int strtoq __P ((__const char *__restrict __nptr, |
111 | char **__restrict __endptr, int __base)); | |
28f540f4 | 112 | /* Convert a string to an unsigned quadword integer. */ |
2f6d1f1b UD |
113 | extern unsigned long long int strtouq __P ((__const char *__restrict __nptr, |
114 | char **__restrict __endptr, | |
115 | int __base)); | |
28f540f4 RM |
116 | #endif /* GCC and use BSD. */ |
117 | ||
2f6d1f1b | 118 | #if defined __USE_ISOC9X || (defined __GNUC__ && defined __USE_MISC) |
7cc27f44 UD |
119 | /* These functions will part of the standard C library in ISO C 9X. */ |
120 | ||
76060ec0 | 121 | /* Convert a string to a quadword integer. */ |
2f6d1f1b UD |
122 | extern long long int strtoll __P ((__const char *__restrict __nptr, |
123 | char **__restrict __endptr, int __base)); | |
76060ec0 | 124 | /* Convert a string to an unsigned quadword integer. */ |
2f6d1f1b UD |
125 | extern unsigned long long int strtoull __P ((__const char *__restrict __nptr, |
126 | char **__restrict __endptr, | |
127 | int __base)); | |
128 | #endif /* ISO C 9X or GCC and use MISC. */ | |
76060ec0 RM |
129 | |
130 | ||
0501d603 UD |
131 | #ifdef __USE_GNU |
132 | /* The concept of one static locale per category is not very well | |
133 | thought out. Many applications will need to process its data using | |
134 | information from several different locales. Another application is | |
135 | the implementation of the internationalization handling in the | |
136 | upcoming ISO C++ standard library. To support this another set of | |
137 | the functions using locale data exist which have an additional | |
138 | argument. | |
139 | ||
140 | Attention: all these functions are *not* standardized in any form. | |
141 | This is a proof-of-concept implementation. */ | |
142 | ||
143 | /* Structure for reentrant locale using functions. This is an | |
144 | (almost) opaque type for the user level programs. */ | |
145 | # include <xlocale.h> | |
146 | ||
147 | /* Special versions of the functions above which take the locale to | |
148 | use as an additional parameter. */ | |
149 | extern long int __strtol_l __P ((__const char *__restrict __nptr, | |
150 | char **__restrict __endptr, int __base, | |
151 | __locale_t __loc)); | |
152 | ||
153 | extern unsigned long int __strtoul_l __P ((__const char *__restrict __nptr, | |
154 | char **__restrict __endptr, | |
155 | int __base, __locale_t __loc)); | |
156 | ||
157 | extern long long int __strtoll_l __P ((__const char *__restrict __nptr, | |
158 | char **__restrict __endptr, int __base, | |
159 | __locale_t __loc)); | |
160 | ||
161 | extern unsigned long long int __strtoull_l __P ((__const char *__restrict | |
162 | __nptr, | |
163 | char **__restrict __endptr, | |
164 | int __base, | |
165 | __locale_t __loc)); | |
166 | ||
167 | extern double __strtod_l __P ((__const char *__restrict __nptr, | |
168 | char **__restrict __endptr, __locale_t __loc)); | |
169 | ||
170 | extern float __strtof_l __P ((__const char *__restrict __nptr, | |
171 | char **__restrict __endptr, __locale_t __loc)); | |
172 | ||
173 | extern __long_double_t __strtold_l __P ((__const char *__restrict __nptr, | |
174 | char **__restrict __endptr, | |
175 | __locale_t __loc)); | |
176 | #endif /* GNU */ | |
177 | ||
f0bf9cb9 RM |
178 | |
179 | /* The internal entry points for `strtoX' take an extra flag argument | |
180 | saying whether or not to parse locale-dependent number grouping. */ | |
181 | ||
2f6d1f1b UD |
182 | extern double __strtod_internal __P ((__const char *__restrict __nptr, |
183 | char **__restrict __endptr, | |
184 | int __group)); | |
185 | extern float __strtof_internal __P ((__const char *__restrict __nptr, | |
186 | char **__restrict __endptr, int __group)); | |
187 | extern __long_double_t __strtold_internal __P ((__const char * | |
188 | __restrict __nptr, | |
189 | char **__restrict __endptr, | |
190 | int __group)); | |
191 | extern long int __strtol_internal __P ((__const char *__restrict __nptr, | |
192 | char **__restrict __endptr, | |
75cd5204 | 193 | int __base, int __group)); |
2f6d1f1b UD |
194 | extern unsigned long int __strtoul_internal __P ((__const char * |
195 | __restrict __nptr, | |
196 | char **__restrict __endptr, | |
197 | int __base, int __group)); | |
75cd5204 | 198 | #ifdef __GNUC__ |
2f6d1f1b UD |
199 | extern long long int __strtoll_internal __P ((__const char *__restrict __nptr, |
200 | char **__restrict __endptr, | |
201 | int __base, int __group)); | |
202 | extern unsigned long long int __strtoull_internal __P ((__const char * | |
203 | __restrict __nptr, | |
204 | char ** | |
205 | __restrict __endptr, | |
206 | int __base, | |
207 | int __group)); | |
75cd5204 | 208 | #endif /* GCC */ |
f0bf9cb9 | 209 | |
377a515b | 210 | #if defined __OPTIMIZE__ && __GNUC__ >= 2 |
f0bf9cb9 RM |
211 | /* Define inline functions which call the internal entry points. */ |
212 | ||
2604afb1 UD |
213 | extern __inline double |
214 | strtod (__const char *__restrict __nptr, char **__restrict __endptr) | |
215 | { | |
216 | return __strtod_internal (__nptr, __endptr, 0); | |
217 | } | |
218 | extern __inline long int | |
219 | strtol (__const char *__restrict __nptr, char **__restrict __endptr, | |
220 | int __base) | |
221 | { | |
222 | return __strtol_internal (__nptr, __endptr, __base, 0); | |
223 | } | |
224 | extern __inline unsigned long int | |
225 | strtoul (__const char *__restrict __nptr, char **__restrict __endptr, | |
226 | int __base) | |
227 | { | |
228 | return __strtoul_internal (__nptr, __endptr, __base, 0); | |
229 | } | |
230 | ||
231 | # ifdef __USE_GNU | |
232 | extern __inline float | |
233 | strtof (__const char *__restrict __nptr, char **__restrict __endptr) | |
234 | { | |
235 | return __strtof_internal (__nptr, __endptr, 0); | |
236 | } | |
237 | extern __inline __long_double_t | |
238 | strtold (__const char *__restrict __nptr, char **__restrict __endptr) | |
239 | { | |
240 | return __strtold_internal (__nptr, __endptr, 0); | |
241 | } | |
242 | # endif | |
243 | ||
244 | # ifdef __USE_BSD | |
245 | extern __inline long long int | |
246 | strtoq (__const char *__restrict __nptr, char **__restrict __endptr, | |
247 | int __base) | |
248 | { | |
249 | return __strtoll_internal (__nptr, __endptr, __base, 0); | |
250 | } | |
251 | extern __inline unsigned long long int | |
252 | strtouq (__const char *__restrict __nptr, char **__restrict __endptr, | |
253 | int __base) | |
254 | { | |
255 | return __strtoull_internal (__nptr, __endptr, __base, 0); | |
256 | } | |
257 | # endif | |
258 | ||
259 | # if defined __USE_MISC || defined __USE_ISOC9X | |
260 | extern __inline long long int | |
261 | strtoll (__const char *__restrict __nptr, char **__restrict __endptr, | |
262 | int __base) | |
263 | { | |
264 | return __strtoll_internal (__nptr, __endptr, __base, 0); | |
265 | } | |
266 | extern __inline unsigned long long int | |
267 | strtoull (__const char * __restrict __nptr, char **__restrict __endptr, | |
268 | int __base) | |
269 | { | |
270 | return __strtoull_internal (__nptr, __endptr, __base, 0); | |
271 | } | |
272 | # endif | |
273 | ||
274 | extern __inline double | |
275 | atof (__const char *__nptr) | |
276 | { | |
277 | return strtod (__nptr, (char **) NULL); | |
278 | } | |
279 | extern __inline int | |
280 | atoi (__const char *__nptr) | |
281 | { | |
282 | return (int) strtol (__nptr, (char **) NULL, 10); | |
283 | } | |
284 | extern __inline long int | |
285 | atol (__const char *__nptr) | |
286 | { | |
287 | return strtol (__nptr, (char **) NULL, 10); | |
288 | } | |
289 | ||
290 | # if defined __USE_MISC || defined __USE_ISOC9X | |
291 | extern __inline long long int | |
292 | atoll (__const char *__nptr) | |
293 | { | |
294 | return strtoll (__nptr, (char **) NULL, 10); | |
295 | } | |
296 | # endif | |
28f540f4 RM |
297 | #endif /* Optimizing GCC >=2. */ |
298 | ||
299 | ||
377a515b | 300 | #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED |
bbed653c RM |
301 | /* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant |
302 | digit first. Returns a pointer to static storage overwritten by the | |
303 | next call. */ | |
304 | extern char *l64a __P ((long int __n)); | |
305 | ||
036cc82f RM |
306 | /* Read a number from a string S in base 64 as above. */ |
307 | extern long int a64l __P ((__const char *__s)); | |
28f540f4 | 308 | |
b20e47cb RM |
309 | |
310 | #include <sys/types.h> /* we need int32_t... */ | |
311 | ||
28f540f4 RM |
312 | /* These are the functions that actually do things. The `random', `srandom', |
313 | `initstate' and `setstate' functions are those from BSD Unices. | |
314 | The `rand' and `srand' functions are required by the ANSI standard. | |
315 | We provide both interfaces to the same random number generator. */ | |
316 | /* Return a random long integer between 0 and RAND_MAX inclusive. */ | |
b20e47cb | 317 | extern int32_t __random __P ((void)); |
9ebb936d RM |
318 | extern int32_t random __P ((void)); |
319 | ||
28f540f4 RM |
320 | /* Seed the random number generator with the given number. */ |
321 | extern void __srandom __P ((unsigned int __seed)); | |
9ebb936d | 322 | extern void srandom __P ((unsigned int __seed)); |
28f540f4 RM |
323 | |
324 | /* Initialize the random number generator to use state buffer STATEBUF, | |
325 | of length STATELEN, and seed it with SEED. Optimal lengths are 8, 16, | |
326 | 32, 64, 128 and 256, the bigger the better; values less than 8 will | |
327 | cause an error and values greater than 256 will be rounded down. */ | |
328 | extern __ptr_t __initstate __P ((unsigned int __seed, __ptr_t __statebuf, | |
329 | size_t __statelen)); | |
9ebb936d RM |
330 | extern __ptr_t initstate __P ((unsigned int __seed, __ptr_t __statebuf, |
331 | size_t __statelen)); | |
332 | ||
28f540f4 RM |
333 | /* Switch the random number generator to state buffer STATEBUF, |
334 | which should have been previously initialized by `initstate'. */ | |
335 | extern __ptr_t __setstate __P ((__ptr_t __statebuf)); | |
28f540f4 RM |
336 | extern __ptr_t setstate __P ((__ptr_t __statebuf)); |
337 | ||
60478656 | 338 | |
2604afb1 | 339 | # ifdef __USE_MISC |
60478656 RM |
340 | /* Reentrant versions of the `random' family of functions. |
341 | These functions all use the following data structure to contain | |
342 | state, rather than global state variables. */ | |
343 | ||
344 | struct random_data | |
345 | { | |
b20e47cb RM |
346 | int32_t *fptr; /* Front pointer. */ |
347 | int32_t *rptr; /* Rear pointer. */ | |
348 | int32_t *state; /* Array of state values. */ | |
60478656 RM |
349 | int rand_type; /* Type of random number generator. */ |
350 | int rand_deg; /* Degree of random number generator. */ | |
351 | int rand_sep; /* Distance between front and rear. */ | |
b20e47cb | 352 | int32_t *end_ptr; /* Pointer behind state table. */ |
60478656 RM |
353 | }; |
354 | ||
b20e47cb RM |
355 | extern int __random_r __P ((struct random_data *__buf, int32_t *__result)); |
356 | extern int random_r __P ((struct random_data *__buf, int32_t *__result)); | |
8a523922 | 357 | |
60478656 | 358 | extern int __srandom_r __P ((unsigned int __seed, struct random_data *__buf)); |
8a523922 UD |
359 | extern int srandom_r __P ((unsigned int __seed, struct random_data *__buf)); |
360 | ||
60478656 RM |
361 | extern int __initstate_r __P ((unsigned int __seed, __ptr_t __statebuf, |
362 | size_t __statelen, struct random_data *__buf)); | |
60478656 RM |
363 | extern int initstate_r __P ((unsigned int __seed, __ptr_t __statebuf, |
364 | size_t __statelen, struct random_data *__buf)); | |
8a523922 UD |
365 | |
366 | extern int __setstate_r __P ((__ptr_t __statebuf, struct random_data *__buf)); | |
60478656 | 367 | extern int setstate_r __P ((__ptr_t __statebuf, struct random_data *__buf)); |
2604afb1 | 368 | # endif /* Use misc. */ |
19361cb7 | 369 | #endif /* Use SVID || extended X/Open. */ |
60478656 RM |
370 | |
371 | ||
2c6fe0bd UD |
372 | /* Return a random integer between 0 and RAND_MAX inclusive. */ |
373 | extern int rand __P ((void)); | |
374 | /* Seed the random number generator with the given number. */ | |
375 | extern void srand __P ((unsigned int __seed)); | |
376 | ||
19361cb7 | 377 | #ifdef __USE_MISC |
47707456 UD |
378 | /* Reentrant interface according to POSIX.1. */ |
379 | extern int __rand_r __P ((unsigned int *__seed)); | |
380 | extern int rand_r __P ((unsigned int *__seed)); | |
381 | #endif | |
382 | ||
2c6fe0bd | 383 | |
377a515b | 384 | #if defined __USE_SVID || defined __USE_XOPEN |
60478656 RM |
385 | /* System V style 48-bit random number generator functions. */ |
386 | ||
2c6fe0bd UD |
387 | /* Return non-negative, double-precision floating-point value in [0.0,1.0). */ |
388 | extern double drand48 __P ((void)); | |
389 | extern double erand48 __P ((unsigned short int __xsubi[3])); | |
390 | ||
391 | /* Return non-negative, long integer in [0,2^31). */ | |
b4012b75 UD |
392 | extern long int lrand48 __P ((void)); |
393 | extern long int nrand48 __P ((unsigned short int __xsubi[3])); | |
2c6fe0bd UD |
394 | |
395 | /* Return signed, long integers in [-2^31,2^31). */ | |
b4012b75 UD |
396 | extern long int mrand48 __P ((void)); |
397 | extern long int jrand48 __P ((unsigned short int __xsubi[3])); | |
2c6fe0bd UD |
398 | |
399 | /* Seed random number generator. */ | |
b4012b75 | 400 | extern void srand48 __P ((long int __seedval)); |
2c6fe0bd UD |
401 | extern unsigned short int *seed48 __P ((unsigned short int __seed16v[3])); |
402 | extern void lcong48 __P ((unsigned short int __param[7])); | |
403 | ||
60478656 RM |
404 | /* Data structure for communication with thread safe versions. */ |
405 | struct drand48_data | |
406 | { | |
407 | unsigned short int X[3]; /* Current state. */ | |
408 | unsigned short int a[3]; /* Factor in congruential formula. */ | |
409 | unsigned short int c; /* Additive const. in congruential formula. */ | |
410 | unsigned short int old_X[3]; /* Old state. */ | |
411 | int init; /* Flag for initializing. */ | |
412 | }; | |
413 | ||
19361cb7 | 414 | #ifdef __USE_MISC |
60478656 | 415 | /* Return non-negative, double-precision floating-point value in [0.0,1.0). */ |
60478656 | 416 | extern int drand48_r __P ((struct drand48_data *__buffer, double *__result)); |
47f13fd4 UD |
417 | extern int __erand48_r __P ((unsigned short int __xsubi[3], |
418 | struct drand48_data *__buffer, double *__result)); | |
60478656 RM |
419 | extern int erand48_r __P ((unsigned short int __xsubi[3], |
420 | struct drand48_data *__buffer, double *__result)); | |
2c6fe0bd | 421 | |
60478656 | 422 | /* Return non-negative, long integer in [0,2^31). */ |
b4012b75 | 423 | extern int lrand48_r __P ((struct drand48_data *__buffer, long int *__result)); |
47f13fd4 UD |
424 | extern int __nrand48_r __P ((unsigned short int __xsubi[3], |
425 | struct drand48_data *__buffer, | |
426 | long int *__result)); | |
60478656 | 427 | extern int nrand48_r __P ((unsigned short int __xsubi[3], |
b4012b75 | 428 | struct drand48_data *__buffer, long int *__result)); |
2c6fe0bd | 429 | |
60478656 | 430 | /* Return signed, long integers in [-2^31,2^31). */ |
b4012b75 | 431 | extern int mrand48_r __P ((struct drand48_data *__buffer, long int *__result)); |
47f13fd4 UD |
432 | extern int __jrand48_r __P ((unsigned short int __xsubi[3], |
433 | struct drand48_data *__buffer, | |
434 | long int *__result)); | |
60478656 | 435 | extern int jrand48_r __P ((unsigned short int __xsubi[3], |
b4012b75 | 436 | struct drand48_data *__buffer, long int *__result)); |
2c6fe0bd | 437 | |
60478656 | 438 | /* Seed random number generator. */ |
47f13fd4 UD |
439 | extern int __srand48_r __P ((long int __seedval, |
440 | struct drand48_data *__buffer)); | |
b4012b75 | 441 | extern int srand48_r __P ((long int __seedval, struct drand48_data *__buffer)); |
47f13fd4 UD |
442 | |
443 | extern int __seed48_r __P ((unsigned short int __seed16v[3], | |
444 | struct drand48_data *__buffer)); | |
60478656 RM |
445 | extern int seed48_r __P ((unsigned short int __seed16v[3], |
446 | struct drand48_data *__buffer)); | |
47f13fd4 UD |
447 | |
448 | extern int __lcong48_r __P ((unsigned short int __param[7], | |
449 | struct drand48_data *__buffer)); | |
60478656 RM |
450 | extern int lcong48_r __P ((unsigned short int __param[7], |
451 | struct drand48_data *__buffer)); | |
19361cb7 | 452 | #endif /* Use misc. */ |
60478656 RM |
453 | |
454 | /* Internal function to compute next state of the generator. */ | |
455 | extern int __drand48_iterate __P ((unsigned short int __xsubi[3], | |
456 | struct drand48_data *__buffer)); | |
2c6fe0bd | 457 | #endif /* Use SVID or X/Open. */ |
28f540f4 RM |
458 | |
459 | ||
460 | /* Allocate SIZE bytes of memory. */ | |
461 | extern __ptr_t malloc __P ((size_t __size)); | |
462 | /* Re-allocate the previously allocated block | |
463 | in __ptr_t, making the new block SIZE bytes long. */ | |
464 | extern __ptr_t realloc __P ((__ptr_t __ptr, size_t __size)); | |
465 | /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */ | |
466 | extern __ptr_t calloc __P ((size_t __nmemb, size_t __size)); | |
467 | /* Free a block allocated by `malloc', `realloc' or `calloc'. */ | |
468 | extern void free __P ((__ptr_t __ptr)); | |
469 | ||
470 | #ifdef __USE_MISC | |
471 | /* Free a block. An alias for `free'. (Sun Unices). */ | |
472 | extern void cfree __P ((__ptr_t __ptr)); | |
473 | #endif /* Use misc. */ | |
474 | ||
377a515b | 475 | #if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC |
2604afb1 | 476 | # include <alloca.h> |
28f540f4 RM |
477 | #endif /* Use GNU, BSD, or misc. */ |
478 | ||
377a515b | 479 | #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED |
28f540f4 RM |
480 | /* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */ |
481 | extern __ptr_t valloc __P ((size_t __size)); | |
482 | #endif | |
483 | ||
484 | ||
485 | /* Abort execution and generate a core-dump. */ | |
486 | extern void abort __P ((void)) __attribute__ ((__noreturn__)); | |
487 | ||
488 | ||
489 | /* Register a function to be called when `exit' is called. */ | |
490 | extern int atexit __P ((void (*__func) (void))); | |
491 | ||
492 | #ifdef __USE_MISC | |
493 | /* Register a function to be called with the status | |
494 | given to `exit' and the given argument. */ | |
10dc2a90 UD |
495 | extern int __on_exit __P ((void (*__func) (int __status, __ptr_t __arg), |
496 | __ptr_t __arg)); | |
28f540f4 RM |
497 | extern int on_exit __P ((void (*__func) (int __status, __ptr_t __arg), |
498 | __ptr_t __arg)); | |
499 | #endif | |
500 | ||
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 __P ((int __status)) __attribute__ ((__noreturn__)); | |
505 | ||
506 | ||
507 | /* Return the value of envariable NAME, or NULL if it doesn't exist. */ | |
508 | extern char *getenv __P ((__const char *__name)); | |
509 | ||
d68171ed UD |
510 | /* This function is similar to the above but returns NULL if the |
511 | programs is running with SUID or SGID enabled. */ | |
512 | extern char *__secure_getenv __P ((__const char *__name)); | |
513 | ||
377a515b | 514 | #if defined __USE_SVID || defined __USE_XOPEN |
28f540f4 RM |
515 | /* The SVID says this is in <stdio.h>, but this seems a better place. */ |
516 | /* Put STRING, which is of the form "NAME=VALUE", in the environment. | |
517 | If there is no `=', remove NAME from the environment. */ | |
518 | extern int putenv __P ((__const char *__string)); | |
519 | #endif | |
520 | ||
521 | #ifdef __USE_BSD | |
522 | /* Set NAME to VALUE in the environment. | |
523 | If REPLACE is nonzero, overwrite an existing value. */ | |
524 | extern int setenv __P ((__const char *__name, __const char *__value, | |
525 | int __replace)); | |
196980f5 RM |
526 | |
527 | /* Remove the variable NAME from the environment. */ | |
528 | extern void unsetenv __P ((__const char *__name)); | |
28f540f4 RM |
529 | #endif |
530 | ||
f0e44959 UD |
531 | #ifdef __USE_MISC |
532 | /* The `clearenv' was planned to be added to POSIX.1 but probably | |
533 | never made it. Nevertheless the POSIX.9 standard (POSIX bindings | |
534 | for Fortran 77) requires this function. */ | |
22d57dd3 | 535 | extern int __clearenv __P ((void)); |
f0e44959 UD |
536 | extern int clearenv __P ((void)); |
537 | #endif | |
538 | ||
2c6fe0bd | 539 | |
377a515b | 540 | #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
2c6fe0bd UD |
541 | /* Generate a unique temporary file name from TEMPLATE. |
542 | The last six characters of TEMPLATE must be "XXXXXX"; | |
543 | they are replaced with a string that makes the file name unique. | |
544 | Returns TEMPLATE, or a null pointer if it cannot get a unique file name. */ | |
545 | extern char *mktemp __P ((char *__template)); | |
546 | ||
547 | /* Generate a unique temporary file name from TEMPLATE. | |
548 | The last six characters of TEMPLATE must be "XXXXXX"; | |
549 | they are replaced with a string that makes the filename unique. | |
550 | Returns a file descriptor open on the file for reading and writing, | |
551 | or -1 if it cannot create a uniquely-named file. */ | |
552 | extern int mkstemp __P ((char *__template)); | |
553 | #endif | |
554 | ||
555 | ||
28f540f4 RM |
556 | /* Execute the given line as a shell command. */ |
557 | extern int system __P ((__const char *__command)); | |
558 | ||
559 | ||
fa0bc87c RM |
560 | #ifdef __USE_GNU |
561 | /* Return a malloc'd string containing the canonical absolute name of the | |
562 | named file. The last file name component need not exist, and may be a | |
563 | symlink to a nonexistent file. */ | |
564 | extern char *canonicalize_file_name __P ((__const char *__name)); | |
565 | #endif | |
566 | ||
377a515b | 567 | #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED |
fa0bc87c RM |
568 | /* Return the canonical absolute name of file NAME. The last file name |
569 | component need not exist, and may be a symlink to a nonexistent file. | |
570 | If RESOLVED is null, the result is malloc'd; otherwise, if the canonical | |
571 | name is PATH_MAX chars or more, returns null with `errno' set to | |
572 | ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars, returns the | |
573 | name in RESOLVED. */ | |
574 | extern char *realpath __P ((__const char *__name, char *__resolved)); | |
575 | #endif | |
576 | ||
577 | ||
28f540f4 | 578 | /* Shorthand for type of comparison functions. */ |
60478656 | 579 | #ifndef __COMPAR_FN_T |
2604afb1 | 580 | # define __COMPAR_FN_T |
28f540f4 RM |
581 | typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t)); |
582 | ||
2604afb1 | 583 | # ifdef __USE_GNU |
28f540f4 | 584 | typedef __compar_fn_t comparison_fn_t; |
2604afb1 | 585 | # endif |
28f540f4 RM |
586 | #endif |
587 | ||
588 | /* Do a binary search for KEY in BASE, which consists of NMEMB elements | |
589 | of SIZE bytes each, using COMPAR to perform the comparisons. */ | |
590 | extern __ptr_t bsearch __P ((__const __ptr_t __key, __const __ptr_t __base, | |
591 | size_t __nmemb, size_t __size, | |
592 | __compar_fn_t __compar)); | |
593 | ||
594 | /* Sort NMEMB elements of BASE, of SIZE bytes each, | |
595 | using COMPAR to perform the comparisons. */ | |
596 | extern void qsort __P ((__ptr_t __base, size_t __nmemb, size_t __size, | |
597 | __compar_fn_t __compar)); | |
598 | ||
599 | ||
28f540f4 | 600 | /* Return the absolute value of X. */ |
7176f4e4 RM |
601 | extern int abs __P ((int __x)) __attribute__ ((__const__)); |
602 | extern long int labs __P ((long int __x)) __attribute__ ((__const__)); | |
2604afb1 | 603 | #ifdef __USE_ISOC9X |
2f6d1f1b UD |
604 | extern long long int llabs __P ((long long int __x)) |
605 | __attribute__ ((__const__)); | |
59dd8641 | 606 | #endif |
28f540f4 RM |
607 | |
608 | ||
59dd8641 | 609 | /* Return the `div_t', `ldiv_t' or `lldiv_t' representation |
28f540f4 RM |
610 | of the value of NUMER over DENOM. */ |
611 | /* GCC may have built-ins for these someday. */ | |
7176f4e4 | 612 | extern div_t div __P ((int __numer, int __denom)) __attribute__ ((__const__)); |
2f6d1f1b UD |
613 | extern ldiv_t ldiv __P ((long int __numer, long int __denom)) |
614 | __attribute__ ((__const__)); | |
615 | #ifdef __USE_ISOC9X | |
616 | extern lldiv_t lldiv __P ((long long int __numer, long long int __denom)) | |
617 | __attribute__ ((__const__)); | |
59dd8641 | 618 | #endif |
28f540f4 RM |
619 | |
620 | ||
377a515b | 621 | #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED |
60478656 RM |
622 | /* Convert floating point numbers to strings. The returned values are |
623 | valid only until another call to the same function. */ | |
624 | ||
625 | /* Convert VALUE to a string with NDIGIT digits and return a pointer to | |
626 | this. Set *DECPT with the position of the decimal character and *SIGN | |
627 | with the sign of the number. */ | |
2c6fe0bd UD |
628 | extern char *ecvt __P ((double __value, int __ndigit, int *__decpt, |
629 | int *__sign)); | |
60478656 RM |
630 | |
631 | /* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT | |
632 | with the position of the decimal character and *SIGN with the sign of | |
633 | the number. */ | |
2c6fe0bd UD |
634 | extern char *fcvt __P ((double __value, int __ndigit, int *__decpt, |
635 | int *__sign)); | |
60478656 RM |
636 | |
637 | /* If possible convert VALUE to a string with NDIGIT significant digits. | |
638 | Otherwise use exponential representation. The resulting string will | |
639 | be written to BUF. */ | |
2c6fe0bd | 640 | extern char *gcvt __P ((double __value, int __ndigit, char *__buf)); |
60478656 | 641 | |
2064087b | 642 | /* Long double versions of above functions. */ |
2c6fe0bd UD |
643 | extern char *qecvt __P ((__long_double_t __value, int __ndigit, int *__decpt, |
644 | int *__sign)); | |
645 | extern char *qfcvt __P ((__long_double_t __value, int __ndigit, int *__decpt, | |
646 | int *__sign)); | |
647 | extern char *qgcvt __P ((__long_double_t __value, int __ndigit, char *__buf)); | |
2064087b RM |
648 | |
649 | ||
19361cb7 | 650 | #ifdef __USE_MISC |
60478656 RM |
651 | /* Reentrant version of the functions above which provide their own |
652 | buffers. */ | |
2c6fe0bd UD |
653 | extern int ecvt_r __P ((double __value, int __ndigit, int *__decpt, |
654 | int *__sign, char *__buf, size_t __len)); | |
655 | extern int fcvt_r __P ((double __value, int __ndigit, int *__decpt, | |
656 | int *__sign, char *__buf, size_t __len)); | |
657 | ||
658 | extern int qecvt_r __P ((__long_double_t __value, int __ndigit, int *__decpt, | |
659 | int *__sign, char *__buf, size_t __len)); | |
660 | extern int qfcvt_r __P ((__long_double_t __value, int __ndigit, int *__decpt, | |
661 | int *__sign, char *__buf, size_t __len)); | |
19361cb7 | 662 | #endif /* misc */ |
2c6fe0bd | 663 | #endif /* use MISC || use X/Open Unix */ |
60478656 RM |
664 | |
665 | ||
28f540f4 RM |
666 | /* Return the length of the multibyte character |
667 | in S, which is no longer than N. */ | |
668 | extern int mblen __P ((__const char *__s, size_t __n)); | |
669 | /* Return the length of the given multibyte character, | |
670 | putting its `wchar_t' representation in *PWC. */ | |
2f6d1f1b UD |
671 | extern int mbtowc __P ((wchar_t *__restrict __pwc, |
672 | __const char *__restrict __s, size_t __n)); | |
28f540f4 RM |
673 | /* Put the multibyte character represented |
674 | by WCHAR in S, returning its length. */ | |
675 | extern int wctomb __P ((char *__s, wchar_t __wchar)); | |
676 | ||
377a515b | 677 | #if defined __OPTIMIZE__ && __GNUC__ >= 2 |
2604afb1 UD |
678 | extern __inline int |
679 | mblen (__const char *__s, size_t __n) | |
680 | { | |
681 | return mbtowc ((wchar_t *) NULL, __s, __n); | |
682 | } | |
28f540f4 RM |
683 | #endif /* Optimizing GCC >=2. */ |
684 | ||
685 | ||
686 | /* Convert a multibyte string to a wide char string. */ | |
2f6d1f1b UD |
687 | extern size_t mbstowcs __P ((wchar_t *__restrict __pwcs, |
688 | __const char *__restrict __s, size_t __n)); | |
28f540f4 | 689 | /* Convert a wide char string to multibyte string. */ |
2f6d1f1b UD |
690 | extern size_t wcstombs __P ((char *__restrict __s, |
691 | __const wchar_t *__restrict __pwcs, size_t __n)); | |
28f540f4 RM |
692 | |
693 | ||
857fa1b8 RM |
694 | #ifdef __USE_SVID |
695 | /* Determine whether the string value of RESPONSE matches the affirmation | |
696 | or negative response expression as specified by the LC_MESSAGES category | |
697 | in the program's current locale. Returns 1 if affirmative, 0 if | |
698 | negative, and -1 if not matching. */ | |
699 | extern int rpmatch __P ((__const char *__response)); | |
700 | #endif | |
701 | ||
702 | ||
2c6fe0bd | 703 | #ifdef __USE_XOPEN_EXTENDED |
2064087b RM |
704 | /* Parse comma separated suboption from *OPTIONP and match against |
705 | strings in TOKENS. If found return index and set *VALUEP to | |
706 | optional value introduced by an equal sign. If the suboption is | |
707 | not part of TOKENS return in *VALUEP beginning of unknown | |
708 | suboption. On exit *OPTIONP is set to the beginning of the next | |
2604afb1 | 709 | token or at the terminating NUL character. */ |
2064087b RM |
710 | extern int getsubopt __P ((char **__optionp, __const char *__const *__tokens, |
711 | char **__valuep)); | |
712 | #endif | |
713 | ||
714 | ||
2c6fe0bd UD |
715 | #ifdef __USE_XOPEN |
716 | ||
717 | /* Setup DES tables according KEY. */ | |
718 | extern void setkey __P ((__const char *__key)); | |
719 | #endif | |
720 | ||
721 | ||
28f540f4 RM |
722 | __END_DECLS |
723 | ||
724 | #endif /* stdlib.h */ |