1 /* Copyright (C) 1991-2007, 2009 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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/>. */
19 * ISO C99 Standard: 7.20 General utilities <stdlib.h>
26 /* Get size_t, wchar_t and NULL from <stddef.h>. */
28 #ifndef __need_malloc_and_calloc
29 # ifdef __UCLIBC_HAS_WCHAR__
30 # define __need_wchar_t
38 #ifndef __need_malloc_and_calloc
41 #if defined __USE_XOPEN && !defined _SYS_WAIT_H
42 /* XPG requires a few symbols from <sys/wait.h> being defined. */
43 # include <bits/waitflags.h>
44 # include <bits/waitstatus.h>
48 /* Lots of hair to allow traditional BSD use of `union wait'
49 as well as POSIX.1 use of `int' for the status word. */
51 # if defined __GNUC__ && !defined __cplusplus
52 # define __WAIT_INT(status) \
53 (__extension__ (((union { __typeof(status) __in; int __i; }) \
54 { .__in = (status) }).__i))
56 # define __WAIT_INT(status) (*(int *) &(status))
59 /* This is the type of the argument to `wait'. The funky union
60 causes redeclarations with either `int *' or `union wait *' to be
61 allowed without complaint. __WAIT_STATUS_DEFN is the type used in
62 the actual function definitions. */
64 # if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus
65 # define __WAIT_STATUS void *
66 # define __WAIT_STATUS_DEFN void *
68 /* This works in GCC 2.6.1 and later. */
73 } __WAIT_STATUS __attribute__ ((__transparent_union__));
74 # define __WAIT_STATUS_DEFN int *
77 # else /* Don't use BSD. */
79 # define __WAIT_INT(status) (status)
80 # define __WAIT_STATUS int *
81 # define __WAIT_STATUS_DEFN int *
83 # endif /* Use BSD. */
85 /* Define the macros <sys/wait.h> also would define this way. */
86 # define WEXITSTATUS(status) __WEXITSTATUS (__WAIT_INT (status))
87 # define WTERMSIG(status) __WTERMSIG (__WAIT_INT (status))
88 # define WSTOPSIG(status) __WSTOPSIG (__WAIT_INT (status))
89 # define WIFEXITED(status) __WIFEXITED (__WAIT_INT (status))
90 # define WIFSIGNALED(status) __WIFSIGNALED (__WAIT_INT (status))
91 # define WIFSTOPPED(status) __WIFSTOPPED (__WAIT_INT (status))
92 # ifdef __WIFCONTINUED
93 # define WIFCONTINUED(status) __WIFCONTINUED (__WAIT_INT (status))
95 #endif /* X/Open and <sys/wait.h> not included. */
98 /* Returned by `div'. */
101 int quot; /* Quotient. */
102 int rem; /* Remainder. */
105 /* Returned by `ldiv'. */
106 #ifndef __ldiv_t_defined
109 long int quot; /* Quotient. */
110 long int rem; /* Remainder. */
112 # define __ldiv_t_defined 1
116 #if defined __USE_ISOC99 && !defined __lldiv_t_defined
117 __BEGIN_NAMESPACE_C99
118 /* Returned by `lldiv'. */
119 __extension__ typedef struct
121 long long int quot; /* Quotient. */
122 long long int rem; /* Remainder. */
124 # define __lldiv_t_defined 1
129 /* The largest number rand will return (same as INT_MAX). */
130 #define RAND_MAX 2147483647
133 /* We define these the same for all machines.
134 Changes from this to the outside world should be done in `_exit'. */
135 #define EXIT_FAILURE 1 /* Failing exit status. */
136 #define EXIT_SUCCESS 0 /* Successful exit status. */
139 /* Maximum length of a multibyte character in the current locale. */
141 #define MB_CUR_MAX (__ctype_get_mb_cur_max ())
142 extern size_t __ctype_get_mb_cur_max (void) __THROW __wur;
144 #ifdef __UCLIBC_HAS_WCHAR__
145 # define MB_CUR_MAX (_stdlib_mb_cur_max ())
146 extern size_t _stdlib_mb_cur_max (void) __THROW __wur;
147 libc_hidden_proto(_stdlib_mb_cur_max)
149 # define MB_CUR_MAX 1
154 __BEGIN_NAMESPACE_STD
155 #ifdef __UCLIBC_HAS_FLOATS__
156 /* Convert a string to a floating-point number. */
157 extern double atof (const char *__nptr)
158 __THROW __attribute_pure__ __nonnull ((1)) __wur;
159 #endif /* __UCLIBC_HAS_FLOATS__ */
160 /* Convert a string to an integer. */
161 extern int atoi (const char *__nptr)
162 __THROW __attribute_pure__ __nonnull ((1)) __wur;
163 libc_hidden_proto(atoi)
164 /* Convert a string to a long integer. */
165 extern long int atol (const char *__nptr)
166 __THROW __attribute_pure__ __nonnull ((1)) __wur;
169 #if defined __USE_ISOC99 || defined __USE_MISC
170 __BEGIN_NAMESPACE_C99
171 /* Convert a string to a long long integer. */
172 __extension__ extern long long int atoll (const char *__nptr)
173 __THROW __attribute_pure__ __nonnull ((1)) __wur;
177 #ifdef __UCLIBC_HAS_FLOATS__
178 __BEGIN_NAMESPACE_STD
179 /* Convert a string to a floating-point number. */
180 extern double strtod (const char *__restrict __nptr,
181 char **__restrict __endptr)
182 __THROW __nonnull ((1)) __wur;
183 libc_hidden_proto(strtod)
187 __BEGIN_NAMESPACE_C99
188 /* Likewise for `float' and `long double' sizes of floating-point numbers. */
189 extern float strtof (const char *__restrict __nptr,
190 char **__restrict __endptr) __THROW __nonnull ((1)) __wur;
192 extern long double strtold (const char *__restrict __nptr,
193 char **__restrict __endptr)
194 __THROW __nonnull ((1)) __wur;
197 #endif /* __UCLIBC_HAS_FLOATS__ */
199 __BEGIN_NAMESPACE_STD
200 /* Convert a string to a long integer. */
201 extern long int strtol (const char *__restrict __nptr,
202 char **__restrict __endptr, int __base)
203 __THROW __nonnull ((1)) __wur;
204 libc_hidden_proto(strtol)
205 /* Convert a string to an unsigned long integer. */
206 extern unsigned long int strtoul (const char *__restrict __nptr,
207 char **__restrict __endptr, int __base)
208 __THROW __nonnull ((1)) __wur;
209 libc_hidden_proto(strtoul)
213 #include <sys/types.h> /* for u_quad_t */
215 /* Convert a string to a quadword integer. */
217 extern quad_t strtoq (const char *__restrict __nptr,
218 char **__restrict __endptr, int __base)
219 __THROW __nonnull ((1)) __wur;
220 /* Convert a string to an unsigned quadword integer. */
222 extern u_quad_t strtouq (const char *__restrict __nptr,
223 char **__restrict __endptr, int __base)
224 __THROW __nonnull ((1)) __wur;
225 #endif /* GCC and use BSD. */
227 #if defined __USE_ISOC99 || defined __USE_MISC
228 __BEGIN_NAMESPACE_C99
229 /* Convert a string to a quadword integer. */
231 extern long long int strtoll (const char *__restrict __nptr,
232 char **__restrict __endptr, int __base)
233 __THROW __nonnull ((1)) __wur;
234 libc_hidden_proto(strtoll)
235 /* Convert a string to an unsigned quadword integer. */
237 extern unsigned long long int strtoull (const char *__restrict __nptr,
238 char **__restrict __endptr, int __base)
239 __THROW __nonnull ((1)) __wur;
241 #endif /* ISO C99 or GCC and use MISC. */
244 #if defined __USE_GNU && defined __UCLIBC_HAS_XLOCALE__
245 /* The concept of one static locale per category is not very well
246 thought out. Many applications will need to process its data using
247 information from several different locales. Another problem is
248 the implementation of the internationalization handling in the
249 ISO C++ standard library. To support this another set of
250 the functions using locale data exist which take an additional
253 Attention: even though several *_l interfaces are part of POSIX:2008,
256 /* Structure for reentrant locale using functions. This is an
257 (almost) opaque type for the user level programs. */
258 # include <xlocale.h>
260 /* Special versions of the functions above which take the locale to
261 use as an additional parameter. */
262 extern long int strtol_l (const char *__restrict __nptr,
263 char **__restrict __endptr, int __base,
264 __locale_t __loc) __THROW __nonnull ((1, 4)) __wur;
265 libc_hidden_proto(strtol_l)
267 extern unsigned long int strtoul_l (const char *__restrict __nptr,
268 char **__restrict __endptr,
269 int __base, __locale_t __loc)
270 __THROW __nonnull ((1, 4)) __wur;
271 libc_hidden_proto(strtoul_l)
274 extern long long int strtoll_l (const char *__restrict __nptr,
275 char **__restrict __endptr, int __base,
277 __THROW __nonnull ((1, 4)) __wur;
280 extern unsigned long long int strtoull_l (const char *__restrict __nptr,
281 char **__restrict __endptr,
282 int __base, __locale_t __loc)
283 __THROW __nonnull ((1, 4)) __wur;
285 #ifdef __UCLIBC_HAS_FLOATS__
286 extern double strtod_l (const char *__restrict __nptr,
287 char **__restrict __endptr, __locale_t __loc)
288 __THROW __nonnull ((1, 3)) __wur;
290 extern float strtof_l (const char *__restrict __nptr,
291 char **__restrict __endptr, __locale_t __loc)
292 __THROW __nonnull ((1, 3)) __wur;
294 extern long double strtold_l (const char *__restrict __nptr,
295 char **__restrict __endptr,
297 __THROW __nonnull ((1, 3)) __wur;
298 #endif /* __UCLIBC_HAS_FLOATS__ */
302 #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED
303 /* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant
304 digit first. Returns a pointer to static storage overwritten by the
306 extern char *l64a (long int __n) __THROW __wur;
308 /* Read a number from a string S in base 64 as above. */
309 extern long int a64l (const char *__s)
310 __THROW __attribute_pure__ __nonnull ((1)) __wur;
312 #endif /* Use SVID || extended X/Open. */
314 #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED || defined __USE_BSD
315 # include <sys/types.h> /* we need int32_t... */
317 /* These are the functions that actually do things. The `random', `srandom',
318 `initstate' and `setstate' functions are those from BSD Unices.
319 The `rand' and `srand' functions are required by the ANSI standard.
320 We provide both interfaces to the same random number generator. */
321 /* Return a random long integer between 0 and RAND_MAX inclusive. */
322 extern long int random (void) __THROW;
323 libc_hidden_proto(random)
325 /* Seed the random number generator with the given number. */
326 extern void srandom (unsigned int __seed) __THROW;
328 /* Initialize the random number generator to use state buffer STATEBUF,
329 of length STATELEN, and seed it with SEED. Optimal lengths are 8, 16,
330 32, 64, 128 and 256, the bigger the better; values less than 8 will
331 cause an error and values greater than 256 will be rounded down. */
332 extern char *initstate (unsigned int __seed, char *__statebuf,
333 size_t __statelen) __THROW __nonnull ((2));
335 /* Switch the random number generator to state buffer STATEBUF,
336 which should have been previously initialized by `initstate'. */
337 extern char *setstate (char *__statebuf) __THROW __nonnull ((1));
341 /* Reentrant versions of the `random' family of functions.
342 These functions all use the following data structure to contain
343 state, rather than global state variables. */
347 int32_t *fptr; /* Front pointer. */
348 int32_t *rptr; /* Rear pointer. */
349 int32_t *state; /* Array of state values. */
351 int rand_type; /* Type of random number generator. */
352 int rand_deg; /* Degree of random number generator. */
353 int rand_sep; /* Distance between front and rear. */
355 /* random_r.c, TYPE_x, DEG_x, SEP_x - small enough for int8_t */
356 int8_t rand_type; /* Type of random number generator. */
357 int8_t rand_deg; /* Degree of random number generator. */
358 int8_t rand_sep; /* Distance between front and rear. */
360 int32_t *end_ptr; /* Pointer behind state table. */
363 extern int random_r (struct random_data *__restrict __buf,
364 int32_t *__restrict __result) __THROW __nonnull ((1, 2));
365 libc_hidden_proto(random_r)
367 extern int srandom_r (unsigned int __seed, struct random_data *__buf)
368 __THROW __nonnull ((2));
369 libc_hidden_proto(srandom_r)
371 extern int initstate_r (unsigned int __seed, char *__restrict __statebuf,
373 struct random_data *__restrict __buf)
374 __THROW __nonnull ((2, 4));
375 libc_hidden_proto(initstate_r)
377 extern int setstate_r (char *__restrict __statebuf,
378 struct random_data *__restrict __buf)
379 __THROW __nonnull ((1, 2));
380 libc_hidden_proto(setstate_r)
381 # endif /* Use misc. */
382 #endif /* Use SVID || extended X/Open || BSD. */
385 __BEGIN_NAMESPACE_STD
386 /* Return a random integer between 0 and RAND_MAX inclusive. */
387 extern int rand (void) __THROW;
388 /* Seed the random number generator with the given number. */
389 extern void srand (unsigned int __seed) __THROW;
393 /* Reentrant interface according to POSIX.1. */
394 extern int rand_r (unsigned int *__seed) __THROW;
398 #if defined __USE_SVID || defined __USE_XOPEN
399 /* System V style 48-bit random number generator functions. */
401 #ifdef __UCLIBC_HAS_FLOATS__
402 /* Return non-negative, double-precision floating-point value in [0.0,1.0). */
403 extern double drand48 (void) __THROW;
404 extern double erand48 (unsigned short int __xsubi[3]) __THROW __nonnull ((1));
405 #endif /* __UCLIBC_HAS_FLOATS__ */
407 /* Return non-negative, long integer in [0,2^31). */
408 extern long int lrand48 (void) __THROW;
409 extern long int nrand48 (unsigned short int __xsubi[3])
410 __THROW __nonnull ((1));
412 /* Return signed, long integers in [-2^31,2^31). */
413 extern long int mrand48 (void) __THROW;
414 extern long int jrand48 (unsigned short int __xsubi[3])
415 __THROW __nonnull ((1));
417 /* Seed random number generator. */
418 extern void srand48 (long int __seedval) __THROW;
419 extern unsigned short int *seed48 (unsigned short int __seed16v[3])
420 __THROW __nonnull ((1));
421 extern void lcong48 (unsigned short int __param[7]) __THROW __nonnull ((1));
424 /* Data structure for communication with thread safe versions. This
425 type is to be regarded as opaque. It's only exported because users
426 have to allocate objects of this type. */
429 unsigned short int __x[3]; /* Current state. */
430 unsigned short int __old_x[3]; /* Old state. */
431 unsigned short int __c; /* Additive const. in congruential formula. */
432 unsigned short int __init; /* Flag for initializing. */
433 unsigned long long int __a; /* Factor in congruential formula. */
436 #ifdef __UCLIBC_HAS_FLOATS__
437 /* Return non-negative, double-precision floating-point value in [0.0,1.0). */
438 extern int drand48_r (struct drand48_data *__restrict __buffer,
439 double *__restrict __result) __THROW __nonnull ((1, 2));
440 extern int erand48_r (unsigned short int __xsubi[3],
441 struct drand48_data *__restrict __buffer,
442 double *__restrict __result) __THROW __nonnull ((1, 2));
443 libc_hidden_proto(erand48_r)
444 #endif /* __UCLIBC_HAS_FLOATS__ */
446 /* Return non-negative, long integer in [0,2^31). */
447 extern int lrand48_r (struct drand48_data *__restrict __buffer,
448 long int *__restrict __result)
449 __THROW __nonnull ((1, 2));
450 libc_hidden_proto(lrand48_r)
451 extern int nrand48_r (unsigned short int __xsubi[3],
452 struct drand48_data *__restrict __buffer,
453 long int *__restrict __result)
454 __THROW __nonnull ((1, 2));
455 libc_hidden_proto(nrand48_r)
457 /* Return signed, long integers in [-2^31,2^31). */
458 extern int mrand48_r (struct drand48_data *__restrict __buffer,
459 long int *__restrict __result)
460 __THROW __nonnull ((1, 2));
461 extern int jrand48_r (unsigned short int __xsubi[3],
462 struct drand48_data *__restrict __buffer,
463 long int *__restrict __result)
464 __THROW __nonnull ((1, 2));
465 libc_hidden_proto(jrand48_r)
467 /* Seed random number generator. */
468 extern int srand48_r (long int __seedval, struct drand48_data *__buffer)
469 __THROW __nonnull ((2));
470 libc_hidden_proto(srand48_r)
472 extern int seed48_r (unsigned short int __seed16v[3],
473 struct drand48_data *__buffer) __THROW __nonnull ((1, 2));
474 libc_hidden_proto(seed48_r)
476 extern int lcong48_r (unsigned short int __param[7],
477 struct drand48_data *__buffer)
478 __THROW __nonnull ((1, 2));
479 # endif /* Use misc. */
480 #endif /* Use SVID or X/Open. */
482 #endif /* don't just need malloc and calloc */
484 #ifndef __malloc_and_calloc_defined
485 # define __malloc_and_calloc_defined
486 __BEGIN_NAMESPACE_STD
487 /* Allocate SIZE bytes of memory. */
488 extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
489 /* We want the malloc symbols overridable at runtime
490 * libc_hidden_proto(malloc) */
491 /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
492 extern void *calloc (size_t __nmemb, size_t __size)
493 __THROW __attribute_malloc__ __wur;
497 #ifndef __need_malloc_and_calloc
498 __BEGIN_NAMESPACE_STD
499 /* Re-allocate the previously allocated block
500 in PTR, making the new block SIZE bytes long. */
501 /* __attribute_malloc__ is not used, because if realloc returns
502 the same pointer that was passed to it, aliasing needs to be allowed
503 between objects pointed by the old and new pointers. */
504 extern void *realloc (void *__ptr, size_t __size)
506 /* Free a block allocated by `malloc', `realloc' or `calloc'. */
507 extern void free (void *__ptr) __THROW;
510 #if 0 /*def __USE_MISC*/
511 /* Free a block. An alias for `free'. (Sun Unices). */
512 extern void cfree (void *__ptr) __THROW;
513 #endif /* Use misc. */
515 #if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC
517 #endif /* Use GNU, BSD, or misc. */
519 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
520 /* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */
521 extern void *valloc (size_t __size) __THROW __attribute_malloc__ __wur;
524 #if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
525 /* Allocate memory of SIZE bytes with an alignment of ALIGNMENT. */
526 extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
527 __THROW __nonnull ((1)) __wur;
530 __BEGIN_NAMESPACE_STD
531 /* Abort execution and generate a core-dump. */
532 extern void abort (void) __THROW __attribute__ ((__noreturn__));
533 libc_hidden_proto(abort)
536 /* Register a function to be called when `exit' is called. */
537 extern int atexit (void (*__func) (void)) __THROW __nonnull ((1));
541 /* Register a function to be called with the status
542 given to `exit' and the given argument. */
543 extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)
544 __THROW __nonnull ((1));
547 __BEGIN_NAMESPACE_STD
548 /* Call all functions registered with `atexit' and `on_exit',
549 in the reverse of the order in which they were registered,
550 perform stdio cleanup, and terminate program execution with STATUS. */
551 extern void exit (int __status) __THROW __attribute__ ((__noreturn__));
552 libc_hidden_proto(exit)
556 __BEGIN_NAMESPACE_C99
557 /* Terminate the program with STATUS without calling any of the
558 functions registered with `atexit' or `on_exit'. */
559 extern void _Exit (int __status) __THROW __attribute__ ((__noreturn__));
564 __BEGIN_NAMESPACE_STD
565 /* Return the value of envariable NAME, or NULL if it doesn't exist. */
566 extern char *getenv (const char *__name) __THROW __nonnull ((1)) __wur;
567 libc_hidden_proto(getenv)
571 /* This function is similar to the above but returns NULL if the
572 programs is running with SUID or SGID enabled. */
573 extern char *__secure_getenv (const char *__name)
574 __THROW __nonnull ((1)) __wur;
577 #if defined __USE_SVID || defined __USE_XOPEN
578 /* The SVID says this is in <stdio.h>, but this seems a better place. */
579 /* Put STRING, which is of the form "NAME=VALUE", in the environment.
580 If there is no `=', remove NAME from the environment. */
581 extern int putenv (char *__string) __THROW __nonnull ((1));
584 #if defined __USE_BSD || defined __USE_XOPEN2K
585 /* Set NAME to VALUE in the environment.
586 If REPLACE is nonzero, overwrite an existing value. */
587 extern int setenv (const char *__name, const char *__value, int __replace)
588 __THROW __nonnull ((2));
589 libc_hidden_proto(setenv)
591 /* Remove the variable NAME from the environment. */
592 extern int unsetenv (const char *__name) __THROW;
593 libc_hidden_proto(unsetenv)
596 /* The following is used by uClibc in atexit.c and sysconf.c */
597 /* We have no limit when __UCLIBC_DYNAMIC_ATEXIT__ is enabled. */
598 #ifdef __UCLIBC_DYNAMIC_ATEXIT__
599 # define __UCLIBC_MAX_ATEXIT INT_MAX
601 # define __UCLIBC_MAX_ATEXIT 20
606 /* The `clearenv' was planned to be added to POSIX.1 but probably
607 never made it. Nevertheless the POSIX.9 standard (POSIX bindings
608 for Fortran 77) requires this function. */
609 extern int clearenv (void) __THROW;
613 #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
614 # if defined __UCLIBC_SUSV3_LEGACY__
615 /* Generate a unique temporary file name from TEMPLATE.
616 The last six characters of TEMPLATE must be "XXXXXX";
617 they are replaced with a string that makes the file name unique.
618 Returns TEMPLATE, or a null pointer if it cannot get a unique file name. */
619 extern char *mktemp (char *__template) __THROW __nonnull ((1)) __wur;
622 /* Generate a unique temporary file name from TEMPLATE.
623 The last six characters of TEMPLATE must be "XXXXXX";
624 they are replaced with a string that makes the filename unique.
625 Returns a file descriptor open on the file for reading and writing,
626 or -1 if it cannot create a uniquely-named file.
628 This function is a possible cancellation point and therefore not
629 marked with __THROW. */
630 # ifndef __USE_FILE_OFFSET64
631 extern int mkstemp (char *__template) __nonnull ((1)) __wur;
634 extern int __REDIRECT (mkstemp, (char *__template), mkstemp64)
635 __nonnull ((1)) __wur;
637 # define mkstemp mkstemp64
640 # ifdef __USE_LARGEFILE64
641 extern int mkstemp64 (char *__template) __nonnull ((1)) __wur;
645 #if defined __USE_BSD || defined __USE_XOPEN2K8
646 /* Create a unique temporary directory from TEMPLATE.
647 The last six characters of TEMPLATE must be "XXXXXX";
648 they are replaced with a string that makes the directory name unique.
649 Returns TEMPLATE, or a null pointer if it cannot get a unique name.
650 The directory is created mode 700. */
651 extern char *mkdtemp (char *__template) __THROW __nonnull ((1)) __wur;
655 /* Generate a unique temporary file name from TEMPLATE similar to
656 mkstemp. But allow the caller to pass additional flags which are
657 used in the open call to create the file..
659 This function is a possible cancellation point and therefore not
660 marked with __THROW. */
661 # ifndef __USE_FILE_OFFSET64
662 extern int mkostemp (char *__template, int __flags) __nonnull ((1)) __wur;
665 extern int __REDIRECT (mkostemp, (char *__template, int __flags), mkostemp64)
666 __nonnull ((1)) __wur;
668 # define mkostemp mkostemp64
671 # ifdef __USE_LARGEFILE64
672 extern int mkostemp64 (char *__template, int __flags) __nonnull ((1)) __wur;
678 __BEGIN_NAMESPACE_STD
679 /* Execute the given line as a shell command.
681 This function is a cancellation point and therefore not marked with
683 extern int system (const char *__command) __wur;
688 /* Return a malloc'd string containing the canonical absolute name of the
689 existing named file. */
690 extern char *canonicalize_file_name (const char *__name)
691 __THROW __nonnull ((1)) __wur;
694 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
695 /* Return the canonical absolute name of file NAME. If RESOLVED is
696 null, the result is malloc'd; otherwise, if the canonical name is
697 PATH_MAX chars or more, returns null with `errno' set to
698 ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars,
699 returns the name in RESOLVED. */
700 extern char *realpath (const char *__restrict __name,
701 char *__restrict __resolved) __THROW __wur;
702 libc_hidden_proto(realpath)
706 /* Shorthand for type of comparison functions. */
707 #ifndef __COMPAR_FN_T
708 # define __COMPAR_FN_T
709 typedef int (*__compar_fn_t) (const void *, const void *);
712 typedef __compar_fn_t comparison_fn_t;
716 typedef int (*__compar_d_fn_t) (const void *, const void *, void *);
719 __BEGIN_NAMESPACE_STD
720 /* Do a binary search for KEY in BASE, which consists of NMEMB elements
721 of SIZE bytes each, using COMPAR to perform the comparisons. */
722 extern void *bsearch (const void *__key, const void *__base,
723 size_t __nmemb, size_t __size, __compar_fn_t __compar)
724 __nonnull ((1, 2, 5)) __wur;
726 /* Sort NMEMB elements of BASE, of SIZE bytes each,
727 using COMPAR to perform the comparisons. */
728 extern void qsort (void *__base, size_t __nmemb, size_t __size,
729 __compar_fn_t __compar) __nonnull ((1, 4));
730 libc_hidden_proto(qsort)
732 extern void qsort_r (void *__base, size_t __nmemb, size_t __size,
733 __compar_d_fn_t __compar, void *__arg)
735 libc_hidden_proto(qsort_r)
738 /* Return the absolute value of X. */
739 extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
740 extern long int labs (long int __x) __THROW __attribute__ ((__const__)) __wur;
744 __extension__ extern long long int llabs (long long int __x)
745 __THROW __attribute__ ((__const__)) __wur;
749 __BEGIN_NAMESPACE_STD
750 /* Return the `div_t', `ldiv_t' or `lldiv_t' representation
751 of the value of NUMER over DENOM. */
752 /* GCC may have built-ins for these someday. */
753 extern div_t div (int __numer, int __denom)
754 __THROW __attribute__ ((__const__)) __wur;
755 extern ldiv_t ldiv (long int __numer, long int __denom)
756 __THROW __attribute__ ((__const__)) __wur;
760 __BEGIN_NAMESPACE_C99
761 __extension__ extern lldiv_t lldiv (long long int __numer,
762 long long int __denom)
763 __THROW __attribute__ ((__const__)) __wur;
768 #if ( defined __USE_SVID || defined __USE_XOPEN_EXTENDED ) && defined __UCLIBC_HAS_FLOATS__
769 /* Convert floating point numbers to strings. The returned values are
770 valid only until another call to the same function. */
772 # ifdef __UCLIBC_SUSV3_LEGACY__
774 /* Convert VALUE to a string with NDIGIT digits and return a pointer to
775 this. Set *DECPT with the position of the decimal character and *SIGN
776 with the sign of the number. */
777 extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt,
778 int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
780 /* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT
781 with the position of the decimal character and *SIGN with the sign of
783 extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt,
784 int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
787 /* If possible convert VALUE to a string with NDIGIT significant digits.
788 Otherwise use exponential representation. The resulting string will
789 be written to BUF. */
790 extern char *gcvt (double __value, int __ndigit, char *__buf)
791 __THROW __nonnull ((3)) __wur;
792 # endif /* __UCLIBC_SUSV3_LEGACY__ */
795 # if 0 /*def __USE_MISC*/
796 /* Long double versions of above functions. */
797 extern char *qecvt (long double __value, int __ndigit,
798 int *__restrict __decpt, int *__restrict __sign)
799 __THROW __nonnull ((3, 4)) __wur;
800 extern char *qfcvt (long double __value, int __ndigit,
801 int *__restrict __decpt, int *__restrict __sign)
802 __THROW __nonnull ((3, 4)) __wur;
803 extern char *qgcvt (long double __value, int __ndigit, char *__buf)
804 __THROW __nonnull ((3)) __wur;
807 /* Reentrant version of the functions above which provide their own
809 extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
810 int *__restrict __sign, char *__restrict __buf,
811 size_t __len) __THROW __nonnull ((3, 4, 5));
812 extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
813 int *__restrict __sign, char *__restrict __buf,
814 size_t __len) __THROW __nonnull ((3, 4, 5));
816 extern int qecvt_r (long double __value, int __ndigit,
817 int *__restrict __decpt, int *__restrict __sign,
818 char *__restrict __buf, size_t __len)
819 __THROW __nonnull ((3, 4, 5));
820 extern int qfcvt_r (long double __value, int __ndigit,
821 int *__restrict __decpt, int *__restrict __sign,
822 char *__restrict __buf, size_t __len)
823 __THROW __nonnull ((3, 4, 5));
825 #endif /* use MISC || use X/Open Unix */
828 #ifdef __UCLIBC_HAS_WCHAR__
829 __BEGIN_NAMESPACE_STD
830 /* Return the length of the multibyte character
831 in S, which is no longer than N. */
832 extern int mblen (const char *__s, size_t __n) __THROW __wur;
833 /* Return the length of the given multibyte character,
834 putting its `wchar_t' representation in *PWC. */
835 extern int mbtowc (wchar_t *__restrict __pwc,
836 const char *__restrict __s, size_t __n) __THROW __wur;
837 /* Put the multibyte character represented
838 by WCHAR in S, returning its length. */
839 extern int wctomb (char *__s, wchar_t __wchar) __THROW __wur;
842 /* Convert a multibyte string to a wide char string. */
843 extern size_t mbstowcs (wchar_t *__restrict __pwcs,
844 const char *__restrict __s, size_t __n) __THROW;
845 /* Convert a wide char string to multibyte string. */
846 extern size_t wcstombs (char *__restrict __s,
847 const wchar_t *__restrict __pwcs, size_t __n)
850 #endif /* __UCLIBC_HAS_WCHAR__ */
854 /* Determine whether the string value of RESPONSE matches the affirmation
855 or negative response expression as specified by the LC_MESSAGES category
856 in the program's current locale. Returns 1 if affirmative, 0 if
857 negative, and -1 if not matching. */
858 extern int rpmatch (const char *__response) __THROW __nonnull ((1)) __wur;
862 #ifdef __USE_XOPEN_EXTENDED
863 /* Parse comma separated suboption from *OPTIONP and match against
864 strings in TOKENS. If found return index and set *VALUEP to
865 optional value introduced by an equal sign. If the suboption is
866 not part of TOKENS return in *VALUEP beginning of unknown
867 suboption. On exit *OPTIONP is set to the beginning of the next
868 token or at the terminating NUL character. */
869 extern int getsubopt (char **__restrict __optionp,
870 char *const *__restrict __tokens,
871 char **__restrict __valuep)
872 __THROW __nonnull ((1, 2, 3)) __wur;
877 # if defined __UCLIBC_HAS_CRYPT__
878 /* Setup DES tables according KEY. */
879 extern void setkey (const char *__key) __THROW __nonnull ((1));
880 # endif /* __UCLIBC_HAS_CRYPT__ */
884 /* X/Open pseudo terminal handling. */
887 /* Return a master pseudo-terminal handle. */
888 extern int posix_openpt (int __oflag) __wur;
892 /* The next four functions all take a master pseudo-tty fd and
893 perform an operation on the associated slave: */
895 #ifdef __UCLIBC_HAS_PTY__
896 /* Chown the slave to the calling user. */
897 extern int grantpt (int __fd) __THROW;
899 /* Release an internal lock so the slave can be opened.
900 Call after grantpt(). */
901 extern int unlockpt (int __fd) __THROW;
903 /* Return the pathname of the pseudo terminal slave assoicated with
904 the master FD is open on, or NULL on errors.
905 The returned storage is good until the next call to this function. */
906 extern char *ptsname (int __fd) __THROW __wur;
907 #endif /* __UCLIBC_HAS_PTY__ */
911 # if defined __UCLIBC_HAS_PTY__
912 /* Store at most BUFLEN characters of the pathname of the slave pseudo
913 terminal associated with the master FD is open on in BUF.
914 Return 0 on success, otherwise an error number. */
915 extern int ptsname_r (int __fd, char *__buf, size_t __buflen)
916 __THROW __nonnull ((2));
917 libc_hidden_proto(ptsname_r)
919 # if defined __UCLIBC_HAS_GETPT__
920 /* Open a master pseudo terminal and return its file descriptor. */
921 extern int getpt (void);
925 #if 0 /* def __USE_BSD */
926 /* Put the 1 minute, 5 minute and 15 minute load averages into the first
927 NELEM elements of LOADAVG. Return the number written (never more than
928 three, but may be less than NELEM), or -1 if an error occurred. */
929 extern int getloadavg (double __loadavg[], int __nelem)
930 __THROW __nonnull ((1));
933 #ifdef __UCLIBC_HAS_ARC4RANDOM__
934 # include <sys/types.h>
935 extern u_int32_t arc4random(void);
936 extern void arc4random_stir(void);
937 extern void arc4random_addrandom(unsigned char *, int);
941 extern int __drand48_iterate (unsigned short int xsubi[3], struct drand48_data *buffer) attribute_hidden;
943 /* Global state for non-reentrant functions. */
944 extern struct drand48_data __libc_drand48_data attribute_hidden;
947 #endif /* don't just need malloc and calloc */
948 #undef __need_malloc_and_calloc
952 #endif /* stdlib.h */