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 __USE_XOPEN2K8) && !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 symbol overridable at runtime, do not hide it! */
490 /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
491 extern void *calloc (size_t __nmemb
, size_t __size
)
492 __THROW __attribute_malloc__ __wur
;
493 /* We want the calloc symbol overridable at runtime, do not hide it! */
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 /* We want the realloc symbol overridable at runtime, do not hide it! */
507 /* Free a block allocated by `malloc', `realloc' or `calloc'. */
508 extern void free (void *__ptr
) __THROW
;
509 /* We want the free symbol overridable at runtime, do not hide it! */
512 #if 0 /*def __USE_MISC*/
513 /* Free a block. An alias for `free'. (Sun Unices). */
514 extern void cfree (void *__ptr
) __THROW
;
515 #endif /* Use misc. */
517 #if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC
519 #endif /* Use GNU, BSD, or misc. */
521 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
522 /* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */
523 extern void *valloc (size_t __size
) __THROW __attribute_malloc__ __wur
;
526 #if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
527 /* Allocate memory of SIZE bytes with an alignment of ALIGNMENT. */
528 extern int posix_memalign (void **__memptr
, size_t __alignment
, size_t __size
)
529 __THROW
__nonnull ((1)) __wur
;
532 __BEGIN_NAMESPACE_STD
533 /* Abort execution and generate a core-dump. */
534 extern void abort (void) __THROW
__attribute__ ((__noreturn__
));
535 libc_hidden_proto(abort
)
538 /* Register a function to be called when `exit' is called. */
539 extern int atexit (void (*__func
) (void)) __THROW
__nonnull ((1));
543 /* Register a function to be called with the status
544 given to `exit' and the given argument. */
545 extern int on_exit (void (*__func
) (int __status
, void *__arg
), void *__arg
)
546 __THROW
__nonnull ((1));
549 __BEGIN_NAMESPACE_STD
550 /* Call all functions registered with `atexit' and `on_exit',
551 in the reverse of the order in which they were registered,
552 perform stdio cleanup, and terminate program execution with STATUS. */
553 extern void exit (int __status
) __THROW
__attribute__ ((__noreturn__
));
554 libc_hidden_proto(exit
)
558 __BEGIN_NAMESPACE_C99
559 /* Terminate the program with STATUS without calling any of the
560 functions registered with `atexit' or `on_exit'. */
561 extern void _Exit (int __status
) __THROW
__attribute__ ((__noreturn__
));
566 __BEGIN_NAMESPACE_STD
567 /* Return the value of envariable NAME, or NULL if it doesn't exist. */
568 extern char *getenv (const char *__name
) __THROW
__nonnull ((1)) __wur
;
569 libc_hidden_proto(getenv
)
573 /* This function is similar to the above but returns NULL if the
574 programs is running with SUID or SGID enabled. */
575 extern char *__secure_getenv (const char *__name
)
576 __THROW
__nonnull ((1)) __wur
;
579 #if defined __USE_SVID || defined __USE_XOPEN
580 /* The SVID says this is in <stdio.h>, but this seems a better place. */
581 /* Put STRING, which is of the form "NAME=VALUE", in the environment.
582 If there is no `=', remove NAME from the environment. */
583 extern int putenv (char *__string
) __THROW
__nonnull ((1));
586 #if defined __USE_BSD || defined __USE_XOPEN2K
587 /* Set NAME to VALUE in the environment.
588 If REPLACE is nonzero, overwrite an existing value. */
589 extern int setenv (const char *__name
, const char *__value
, int __replace
)
590 __THROW
__nonnull ((2));
591 libc_hidden_proto(setenv
)
593 /* Remove the variable NAME from the environment. */
594 extern int unsetenv (const char *__name
) __THROW
;
595 libc_hidden_proto(unsetenv
)
598 /* The following is used by uClibc in atexit.c and sysconf.c */
599 /* We have no limit when __UCLIBC_DYNAMIC_ATEXIT__ is enabled. */
600 #ifdef __UCLIBC_DYNAMIC_ATEXIT__
601 # define __UCLIBC_MAX_ATEXIT INT_MAX
603 # define __UCLIBC_MAX_ATEXIT 20
608 /* The `clearenv' was planned to be added to POSIX.1 but probably
609 never made it. Nevertheless the POSIX.9 standard (POSIX bindings
610 for Fortran 77) requires this function. */
611 extern int clearenv (void) __THROW
;
615 #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
616 # if defined __UCLIBC_SUSV3_LEGACY__
617 /* Generate a unique temporary file name from TEMPLATE.
618 The last six characters of TEMPLATE must be "XXXXXX";
619 they are replaced with a string that makes the file name unique.
620 Returns TEMPLATE, or a null pointer if it cannot get a unique file name. */
621 extern char *mktemp (char *__template
) __THROW
__nonnull ((1)) __wur
;
624 /* Generate a unique temporary file name from TEMPLATE.
625 The last six characters of TEMPLATE must be "XXXXXX";
626 they are replaced with a string that makes the filename unique.
627 Returns a file descriptor open on the file for reading and writing,
628 or -1 if it cannot create a uniquely-named file.
630 This function is a possible cancellation point and therefore not
631 marked with __THROW. */
632 # ifndef __USE_FILE_OFFSET64
633 extern int mkstemp (char *__template
) __nonnull ((1)) __wur
;
636 extern int __REDIRECT (mkstemp
, (char *__template
), mkstemp64
)
637 __nonnull ((1)) __wur
;
639 # define mkstemp mkstemp64
642 # ifdef __USE_LARGEFILE64
643 extern int mkstemp64 (char *__template
) __nonnull ((1)) __wur
;
647 #if defined __USE_BSD || defined __USE_XOPEN2K8
648 /* Create a unique temporary directory from TEMPLATE.
649 The last six characters of TEMPLATE must be "XXXXXX";
650 they are replaced with a string that makes the directory name unique.
651 Returns TEMPLATE, or a null pointer if it cannot get a unique name.
652 The directory is created mode 700. */
653 extern char *mkdtemp (char *__template
) __THROW
__nonnull ((1)) __wur
;
657 /* Generate a unique temporary file name from TEMPLATE similar to
658 mkstemp. But allow the caller to pass additional flags which are
659 used in the open call to create the file..
661 This function is a possible cancellation point and therefore not
662 marked with __THROW. */
663 # ifndef __USE_FILE_OFFSET64
664 extern int mkostemp (char *__template
, int __flags
) __nonnull ((1)) __wur
;
667 extern int __REDIRECT (mkostemp
, (char *__template
, int __flags
), mkostemp64
)
668 __nonnull ((1)) __wur
;
670 # define mkostemp mkostemp64
673 # ifdef __USE_LARGEFILE64
674 extern int mkostemp64 (char *__template
, int __flags
) __nonnull ((1)) __wur
;
680 __BEGIN_NAMESPACE_STD
681 /* Execute the given line as a shell command.
683 This function is a cancellation point and therefore not marked with
685 extern int system (const char *__command
) __wur
;
690 /* Return a malloc'd string containing the canonical absolute name of the
691 existing named file. */
692 extern char *canonicalize_file_name (const char *__name
)
693 __THROW
__nonnull ((1)) __wur
;
696 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
697 /* Return the canonical absolute name of file NAME. If RESOLVED is
698 null, the result is malloc'd; otherwise, if the canonical name is
699 PATH_MAX chars or more, returns null with `errno' set to
700 ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars,
701 returns the name in RESOLVED. */
702 extern char *realpath (const char *__restrict __name
,
703 char *__restrict __resolved
) __THROW __wur
;
704 libc_hidden_proto(realpath
)
708 /* Shorthand for type of comparison functions. */
709 #ifndef __COMPAR_FN_T
710 # define __COMPAR_FN_T
711 typedef int (*__compar_fn_t
) (const void *, const void *);
714 typedef __compar_fn_t comparison_fn_t
;
718 typedef int (*__compar_d_fn_t
) (const void *, const void *, void *);
721 __BEGIN_NAMESPACE_STD
722 /* Do a binary search for KEY in BASE, which consists of NMEMB elements
723 of SIZE bytes each, using COMPAR to perform the comparisons. */
724 extern void *bsearch (const void *__key
, const void *__base
,
725 size_t __nmemb
, size_t __size
, __compar_fn_t __compar
)
726 __nonnull ((1, 2, 5)) __wur
;
728 /* Sort NMEMB elements of BASE, of SIZE bytes each,
729 using COMPAR to perform the comparisons. */
730 extern void qsort (void *__base
, size_t __nmemb
, size_t __size
,
731 __compar_fn_t __compar
) __nonnull ((1, 4));
732 libc_hidden_proto(qsort
)
734 extern void qsort_r (void *__base
, size_t __nmemb
, size_t __size
,
735 __compar_d_fn_t __compar
, void *__arg
)
737 libc_hidden_proto(qsort_r
)
740 /* Return the absolute value of X. */
741 extern int abs (int __x
) __THROW
__attribute__ ((__const__
)) __wur
;
742 extern long int labs (long int __x
) __THROW
__attribute__ ((__const__
)) __wur
;
746 __extension__
extern long long int llabs (long long int __x
)
747 __THROW
__attribute__ ((__const__
)) __wur
;
751 __BEGIN_NAMESPACE_STD
752 /* Return the `div_t', `ldiv_t' or `lldiv_t' representation
753 of the value of NUMER over DENOM. */
754 /* GCC may have built-ins for these someday. */
755 extern div_t div (int __numer
, int __denom
)
756 __THROW
__attribute__ ((__const__
)) __wur
;
757 extern ldiv_t ldiv (long int __numer
, long int __denom
)
758 __THROW
__attribute__ ((__const__
)) __wur
;
762 __BEGIN_NAMESPACE_C99
763 __extension__
extern lldiv_t
lldiv (long long int __numer
,
764 long long int __denom
)
765 __THROW
__attribute__ ((__const__
)) __wur
;
770 #if ( defined __USE_SVID || defined __USE_XOPEN_EXTENDED ) && defined __UCLIBC_HAS_FLOATS__
771 /* Convert floating point numbers to strings. The returned values are
772 valid only until another call to the same function. */
774 # ifdef __UCLIBC_SUSV3_LEGACY__
776 /* Convert VALUE to a string with NDIGIT digits and return a pointer to
777 this. Set *DECPT with the position of the decimal character and *SIGN
778 with the sign of the number. */
779 extern char *ecvt (double __value
, int __ndigit
, int *__restrict __decpt
,
780 int *__restrict __sign
) __THROW
__nonnull ((3, 4)) __wur
;
782 /* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT
783 with the position of the decimal character and *SIGN with the sign of
785 extern char *fcvt (double __value
, int __ndigit
, int *__restrict __decpt
,
786 int *__restrict __sign
) __THROW
__nonnull ((3, 4)) __wur
;
789 /* If possible convert VALUE to a string with NDIGIT significant digits.
790 Otherwise use exponential representation. The resulting string will
791 be written to BUF. */
792 extern char *gcvt (double __value
, int __ndigit
, char *__buf
)
793 __THROW
__nonnull ((3)) __wur
;
794 # endif /* __UCLIBC_SUSV3_LEGACY__ */
797 # if 0 /*def __USE_MISC*/
798 /* Long double versions of above functions. */
799 extern char *qecvt (long double __value
, int __ndigit
,
800 int *__restrict __decpt
, int *__restrict __sign
)
801 __THROW
__nonnull ((3, 4)) __wur
;
802 extern char *qfcvt (long double __value
, int __ndigit
,
803 int *__restrict __decpt
, int *__restrict __sign
)
804 __THROW
__nonnull ((3, 4)) __wur
;
805 extern char *qgcvt (long double __value
, int __ndigit
, char *__buf
)
806 __THROW
__nonnull ((3)) __wur
;
809 /* Reentrant version of the functions above which provide their own
811 extern int ecvt_r (double __value
, int __ndigit
, int *__restrict __decpt
,
812 int *__restrict __sign
, char *__restrict __buf
,
813 size_t __len
) __THROW
__nonnull ((3, 4, 5));
814 extern int fcvt_r (double __value
, int __ndigit
, int *__restrict __decpt
,
815 int *__restrict __sign
, char *__restrict __buf
,
816 size_t __len
) __THROW
__nonnull ((3, 4, 5));
818 extern int qecvt_r (long double __value
, int __ndigit
,
819 int *__restrict __decpt
, int *__restrict __sign
,
820 char *__restrict __buf
, size_t __len
)
821 __THROW
__nonnull ((3, 4, 5));
822 extern int qfcvt_r (long double __value
, int __ndigit
,
823 int *__restrict __decpt
, int *__restrict __sign
,
824 char *__restrict __buf
, size_t __len
)
825 __THROW
__nonnull ((3, 4, 5));
827 #endif /* use MISC || use X/Open Unix */
830 #ifdef __UCLIBC_HAS_WCHAR__
831 __BEGIN_NAMESPACE_STD
832 /* Return the length of the multibyte character
833 in S, which is no longer than N. */
834 extern int mblen (const char *__s
, size_t __n
) __THROW __wur
;
835 /* Return the length of the given multibyte character,
836 putting its `wchar_t' representation in *PWC. */
837 extern int mbtowc (wchar_t *__restrict __pwc
,
838 const char *__restrict __s
, size_t __n
) __THROW __wur
;
839 /* Put the multibyte character represented
840 by WCHAR in S, returning its length. */
841 extern int wctomb (char *__s
, wchar_t __wchar
) __THROW __wur
;
844 /* Convert a multibyte string to a wide char string. */
845 extern size_t mbstowcs (wchar_t *__restrict __pwcs
,
846 const char *__restrict __s
, size_t __n
) __THROW
;
847 /* Convert a wide char string to multibyte string. */
848 extern size_t wcstombs (char *__restrict __s
,
849 const wchar_t *__restrict __pwcs
, size_t __n
)
852 #endif /* __UCLIBC_HAS_WCHAR__ */
856 /* Determine whether the string value of RESPONSE matches the affirmation
857 or negative response expression as specified by the LC_MESSAGES category
858 in the program's current locale. Returns 1 if affirmative, 0 if
859 negative, and -1 if not matching. */
860 extern int rpmatch (const char *__response
) __THROW
__nonnull ((1)) __wur
;
864 #ifdef __USE_XOPEN_EXTENDED
865 /* Parse comma separated suboption from *OPTIONP and match against
866 strings in TOKENS. If found return index and set *VALUEP to
867 optional value introduced by an equal sign. If the suboption is
868 not part of TOKENS return in *VALUEP beginning of unknown
869 suboption. On exit *OPTIONP is set to the beginning of the next
870 token or at the terminating NUL character. */
871 extern int getsubopt (char **__restrict __optionp
,
872 char *const *__restrict __tokens
,
873 char **__restrict __valuep
)
874 __THROW
__nonnull ((1, 2, 3)) __wur
;
879 # if defined __UCLIBC_HAS_CRYPT__
880 /* Setup DES tables according KEY. */
881 extern void setkey (const char *__key
) __THROW
__nonnull ((1));
882 # endif /* __UCLIBC_HAS_CRYPT__ */
886 /* X/Open pseudo terminal handling. */
889 /* Return a master pseudo-terminal handle. */
890 extern int posix_openpt (int __oflag
) __wur
;
894 /* The next four functions all take a master pseudo-tty fd and
895 perform an operation on the associated slave: */
897 #ifdef __UCLIBC_HAS_PTY__
898 /* Chown the slave to the calling user. */
899 extern int grantpt (int __fd
) __THROW
;
901 /* Release an internal lock so the slave can be opened.
902 Call after grantpt(). */
903 extern int unlockpt (int __fd
) __THROW
;
905 /* Return the pathname of the pseudo terminal slave assoicated with
906 the master FD is open on, or NULL on errors.
907 The returned storage is good until the next call to this function. */
908 extern char *ptsname (int __fd
) __THROW __wur
;
909 #endif /* __UCLIBC_HAS_PTY__ */
913 # if defined __UCLIBC_HAS_PTY__
914 /* Store at most BUFLEN characters of the pathname of the slave pseudo
915 terminal associated with the master FD is open on in BUF.
916 Return 0 on success, otherwise an error number. */
917 extern int ptsname_r (int __fd
, char *__buf
, size_t __buflen
)
918 __THROW
__nonnull ((2));
919 libc_hidden_proto(ptsname_r
)
921 # if defined __UCLIBC_HAS_GETPT__
922 /* Open a master pseudo terminal and return its file descriptor. */
923 extern int getpt (void);
927 #if 0 /* def __USE_BSD */
928 /* Put the 1 minute, 5 minute and 15 minute load averages into the first
929 NELEM elements of LOADAVG. Return the number written (never more than
930 three, but may be less than NELEM), or -1 if an error occurred. */
931 extern int getloadavg (double __loadavg
[], int __nelem
)
932 __THROW
__nonnull ((1));
935 #ifdef __UCLIBC_HAS_ARC4RANDOM__
936 # include <sys/types.h>
937 extern u_int32_t
arc4random(void);
938 extern void arc4random_stir(void);
939 extern void arc4random_addrandom(unsigned char *, int);
943 extern int __drand48_iterate (unsigned short int xsubi
[3], struct drand48_data
*buffer
) attribute_hidden
;
945 /* Global state for non-reentrant functions. */
946 extern struct drand48_data __libc_drand48_data attribute_hidden
;
949 #endif /* don't just need malloc and calloc */
950 #undef __need_malloc_and_calloc
954 #endif /* stdlib.h */