File Coverage

/usr/include/stdlib.h
Criterion Covered Total %
statement 1 1 100.0
branch n/a
condition n/a
subroutine n/a
total 1 1 100.0


line stmt bran cond sub time code
1           /* Copyright (C) 1991-2007, 2009, 2010, 2011 Free Software Foundation, Inc.
2           This file is part of the GNU C Library.
3            
4           The GNU C Library is free software; you can redistribute it and/or
5           modify it under the terms of the GNU Lesser General Public
6           License as published by the Free Software Foundation; either
7           version 2.1 of the License, or (at your option) any later version.
8            
9           The GNU C Library is distributed in the hope that it will be useful,
10           but WITHOUT ANY WARRANTY; without even the implied warranty of
11           MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12           Lesser General Public License for more details.
13            
14           You should have received a copy of the GNU Lesser General Public
15           License along with the GNU C Library; if not, write to the Free
16           Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17           02111-1307 USA. */
18            
19           /*
20           * ISO C99 Standard: 7.20 General utilities
21           */
22            
23           #ifndef _STDLIB_H
24            
25           #include
26            
27           /* Get size_t, wchar_t and NULL from . */
28           #define __need_size_t
29           #ifndef __need_malloc_and_calloc
30           # define __need_wchar_t
31           # define __need_NULL
32           #endif
33           #include
34            
35           __BEGIN_DECLS
36            
37           #ifndef __need_malloc_and_calloc
38           #define _STDLIB_H 1
39            
40           #if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H
41           /* XPG requires a few symbols from being defined. */
42           # include
43           # include
44            
45           # ifdef __USE_BSD
46            
47           /* Lots of hair to allow traditional BSD use of `union wait'
48           as well as POSIX.1 use of `int' for the status word. */
49            
50           # if defined __GNUC__ && !defined __cplusplus
51           # define __WAIT_INT(status) \
52           (__extension__ (((union { __typeof(status) __in; int __i; }) \
53           { .__in = (status) }).__i))
54           # else
55           # define __WAIT_INT(status) (*(int *) &(status))
56           # endif
57            
58           /* This is the type of the argument to `wait'. The funky union
59           causes redeclarations with either `int *' or `union wait *' to be
60           allowed without complaint. __WAIT_STATUS_DEFN is the type used in
61           the actual function definitions. */
62            
63           # if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus
64           # define __WAIT_STATUS void *
65           # define __WAIT_STATUS_DEFN void *
66           # else
67           /* This works in GCC 2.6.1 and later. */
68           typedef union
69           {
70           union wait *__uptr;
71           int *__iptr;
72           } __WAIT_STATUS __attribute__ ((__transparent_union__));
73           # define __WAIT_STATUS_DEFN int *
74           # endif
75            
76           # else /* Don't use BSD. */
77            
78           # define __WAIT_INT(status) (status)
79           # define __WAIT_STATUS int *
80           # define __WAIT_STATUS_DEFN int *
81            
82           # endif /* Use BSD. */
83            
84           /* Define the macros also would define this way. */
85           # define WEXITSTATUS(status) __WEXITSTATUS (__WAIT_INT (status))
86           # define WTERMSIG(status) __WTERMSIG (__WAIT_INT (status))
87           # define WSTOPSIG(status) __WSTOPSIG (__WAIT_INT (status))
88           # define WIFEXITED(status) __WIFEXITED (__WAIT_INT (status))
89           # define WIFSIGNALED(status) __WIFSIGNALED (__WAIT_INT (status))
90           # define WIFSTOPPED(status) __WIFSTOPPED (__WAIT_INT (status))
91           # ifdef __WIFCONTINUED
92           # define WIFCONTINUED(status) __WIFCONTINUED (__WAIT_INT (status))
93           # endif
94           #endif /* X/Open or XPG7 and not included. */
95            
96           __BEGIN_NAMESPACE_STD
97           /* Returned by `div'. */
98           typedef struct
99           {
100           int quot; /* Quotient. */
101           int rem; /* Remainder. */
102           } div_t;
103            
104           /* Returned by `ldiv'. */
105           #ifndef __ldiv_t_defined
106           typedef struct
107           {
108           long int quot; /* Quotient. */
109           long int rem; /* Remainder. */
110           } ldiv_t;
111           # define __ldiv_t_defined 1
112           #endif
113           __END_NAMESPACE_STD
114            
115           #if defined __USE_ISOC99 && !defined __lldiv_t_defined
116           __BEGIN_NAMESPACE_C99
117           /* Returned by `lldiv'. */
118           __extension__ typedef struct
119           {
120           long long int quot; /* Quotient. */
121           long long int rem; /* Remainder. */
122           } lldiv_t;
123           # define __lldiv_t_defined 1
124           __END_NAMESPACE_C99
125           #endif
126            
127            
128           /* The largest number rand will return (same as INT_MAX). */
129           #define RAND_MAX 2147483647
130            
131            
132           /* We define these the same for all machines.
133           Changes from this to the outside world should be done in `_exit'. */
134           #define EXIT_FAILURE 1 /* Failing exit status. */
135           #define EXIT_SUCCESS 0 /* Successful exit status. */
136            
137            
138           /* Maximum length of a multibyte character in the current locale. */
139           #define MB_CUR_MAX (__ctype_get_mb_cur_max ())
140           extern size_t __ctype_get_mb_cur_max (void) __THROW __wur;
141            
142            
143           __BEGIN_NAMESPACE_STD
144           /* Convert a string to a floating-point number. */
145           extern double atof (__const char *__nptr)
146           __THROW __attribute_pure__ __nonnull ((1)) __wur;
147           /* Convert a string to an integer. */
148           extern int atoi (__const char *__nptr)
149           __THROW __attribute_pure__ __nonnull ((1)) __wur;
150           /* Convert a string to a long integer. */
151           extern long int atol (__const char *__nptr)
152           __THROW __attribute_pure__ __nonnull ((1)) __wur;
153           __END_NAMESPACE_STD
154            
155           #if defined __USE_ISOC99 || (defined __GLIBC_HAVE_LONG_LONG && defined __USE_MISC)
156           __BEGIN_NAMESPACE_C99
157           /* Convert a string to a long long integer. */
158           __extension__ extern long long int atoll (__const char *__nptr)
159           __THROW __attribute_pure__ __nonnull ((1)) __wur;
160           __END_NAMESPACE_C99
161           #endif
162            
163           __BEGIN_NAMESPACE_STD
164           /* Convert a string to a floating-point number. */
165           extern double strtod (__const char *__restrict __nptr,
166           char **__restrict __endptr)
167           __THROW __nonnull ((1)) __wur;
168           __END_NAMESPACE_STD
169            
170           #ifdef __USE_ISOC99
171           __BEGIN_NAMESPACE_C99
172           /* Likewise for `float' and `long double' sizes of floating-point numbers. */
173           extern float strtof (__const char *__restrict __nptr,
174           char **__restrict __endptr) __THROW __nonnull ((1)) __wur;
175            
176           extern long double strtold (__const char *__restrict __nptr,
177           char **__restrict __endptr)
178           __THROW __nonnull ((1)) __wur;
179           __END_NAMESPACE_C99
180           #endif
181            
182           __BEGIN_NAMESPACE_STD
183           /* Convert a string to a long integer. */
184           extern long int strtol (__const char *__restrict __nptr,
185           char **__restrict __endptr, int __base)
186           __THROW __nonnull ((1)) __wur;
187           /* Convert a string to an unsigned long integer. */
188           extern unsigned long int strtoul (__const char *__restrict __nptr,
189           char **__restrict __endptr, int __base)
190           __THROW __nonnull ((1)) __wur;
191           __END_NAMESPACE_STD
192            
193           #if defined __GLIBC_HAVE_LONG_LONG && defined __USE_BSD
194           /* Convert a string to a quadword integer. */
195           __extension__
196           extern long long int strtoq (__const char *__restrict __nptr,
197           char **__restrict __endptr, int __base)
198           __THROW __nonnull ((1)) __wur;
199           /* Convert a string to an unsigned quadword integer. */
200           __extension__
201           extern unsigned long long int strtouq (__const char *__restrict __nptr,
202           char **__restrict __endptr, int __base)
203           __THROW __nonnull ((1)) __wur;
204           #endif /* GCC and use BSD. */
205            
206           #if defined __USE_ISOC99 || (defined __GLIBC_HAVE_LONG_LONG && defined __USE_MISC)
207           __BEGIN_NAMESPACE_C99
208           /* Convert a string to a quadword integer. */
209           __extension__
210           extern long long int strtoll (__const char *__restrict __nptr,
211           char **__restrict __endptr, int __base)
212           __THROW __nonnull ((1)) __wur;
213           /* Convert a string to an unsigned quadword integer. */
214           __extension__
215           extern unsigned long long int strtoull (__const char *__restrict __nptr,
216           char **__restrict __endptr, int __base)
217           __THROW __nonnull ((1)) __wur;
218           __END_NAMESPACE_C99
219           #endif /* ISO C99 or GCC and use MISC. */
220            
221            
222           #ifdef __USE_GNU
223           /* The concept of one static locale per category is not very well
224           thought out. Many applications will need to process its data using
225           information from several different locales. Another problem is
226           the implementation of the internationalization handling in the
227           ISO C++ standard library. To support this another set of
228           the functions using locale data exist which take an additional
229           argument.
230            
231           Attention: even though several *_l interfaces are part of POSIX:2008,
232           these are not. */
233            
234           /* Structure for reentrant locale using functions. This is an
235           (almost) opaque type for the user level programs. */
236           # include
237            
238           /* Special versions of the functions above which take the locale to
239           use as an additional parameter. */
240           extern long int strtol_l (__const char *__restrict __nptr,
241           char **__restrict __endptr, int __base,
242           __locale_t __loc) __THROW __nonnull ((1, 4)) __wur;
243            
244           extern unsigned long int strtoul_l (__const char *__restrict __nptr,
245           char **__restrict __endptr,
246           int __base, __locale_t __loc)
247           __THROW __nonnull ((1, 4)) __wur;
248            
249           __extension__
250           extern long long int strtoll_l (__const char *__restrict __nptr,
251           char **__restrict __endptr, int __base,
252           __locale_t __loc)
253           __THROW __nonnull ((1, 4)) __wur;
254            
255           __extension__
256           extern unsigned long long int strtoull_l (__const char *__restrict __nptr,
257           char **__restrict __endptr,
258           int __base, __locale_t __loc)
259           __THROW __nonnull ((1, 4)) __wur;
260            
261           extern double strtod_l (__const char *__restrict __nptr,
262           char **__restrict __endptr, __locale_t __loc)
263           __THROW __nonnull ((1, 3)) __wur;
264            
265           extern float strtof_l (__const char *__restrict __nptr,
266           char **__restrict __endptr, __locale_t __loc)
267           __THROW __nonnull ((1, 3)) __wur;
268            
269           extern long double strtold_l (__const char *__restrict __nptr,
270           char **__restrict __endptr,
271           __locale_t __loc)
272           __THROW __nonnull ((1, 3)) __wur;
273           #endif /* GNU */
274            
275            
276           #ifdef __USE_EXTERN_INLINES
277           __BEGIN_NAMESPACE_STD
278           __extern_inline double
279           __NTH (atof (__const char *__nptr))
280           {
281           return strtod (__nptr, (char **) NULL);
282           }
283           __extern_inline int
284           __NTH (atoi (__const char *__nptr))
285           {
286 6975         return (int) strtol (__nptr, (char **) NULL, 10);
287           }
288           __extern_inline long int
289           __NTH (atol (__const char *__nptr))
290           {
291           return strtol (__nptr, (char **) NULL, 10);
292           }
293           __END_NAMESPACE_STD
294            
295           # if defined __USE_MISC || defined __USE_ISOC99
296           __BEGIN_NAMESPACE_C99
297           __extension__ __extern_inline long long int
298           __NTH (atoll (__const char *__nptr))
299           {
300           return strtoll (__nptr, (char **) NULL, 10);
301           }
302           __END_NAMESPACE_C99
303           # endif
304           #endif /* Optimizing and Inlining. */
305            
306            
307           #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED
308           /* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant
309           digit first. Returns a pointer to static storage overwritten by the
310           next call. */
311           extern char *l64a (long int __n) __THROW __wur;
312            
313           /* Read a number from a string S in base 64 as above. */
314           extern long int a64l (__const char *__s)
315           __THROW __attribute_pure__ __nonnull ((1)) __wur;
316            
317           #endif /* Use SVID || extended X/Open. */
318            
319           #if defined __USE_SVID || defined __USE_XOPEN_EXTENDED || defined __USE_BSD
320           # include /* we need int32_t... */
321            
322           /* These are the functions that actually do things. The `random', `srandom',
323           `initstate' and `setstate' functions are those from BSD Unices.
324           The `rand' and `srand' functions are required by the ANSI standard.
325           We provide both interfaces to the same random number generator. */
326           /* Return a random long integer between 0 and RAND_MAX inclusive. */
327           extern long int random (void) __THROW;
328            
329           /* Seed the random number generator with the given number. */
330           extern void srandom (unsigned int __seed) __THROW;
331            
332           /* Initialize the random number generator to use state buffer STATEBUF,
333           of length STATELEN, and seed it with SEED. Optimal lengths are 8, 16,
334           32, 64, 128 and 256, the bigger the better; values less than 8 will
335           cause an error and values greater than 256 will be rounded down. */
336           extern char *initstate (unsigned int __seed, char *__statebuf,
337           size_t __statelen) __THROW __nonnull ((2));
338            
339           /* Switch the random number generator to state buffer STATEBUF,
340           which should have been previously initialized by `initstate'. */
341           extern char *setstate (char *__statebuf) __THROW __nonnull ((1));
342            
343            
344           # ifdef __USE_MISC
345           /* Reentrant versions of the `random' family of functions.
346           These functions all use the following data structure to contain
347           state, rather than global state variables. */
348            
349           struct random_data
350           {
351           int32_t *fptr; /* Front pointer. */
352           int32_t *rptr; /* Rear pointer. */
353           int32_t *state; /* Array of state values. */
354           int rand_type; /* Type of random number generator. */
355           int rand_deg; /* Degree of random number generator. */
356           int rand_sep; /* Distance between front and rear. */
357           int32_t *end_ptr; /* Pointer behind state table. */
358           };
359            
360           extern int random_r (struct random_data *__restrict __buf,
361           int32_t *__restrict __result) __THROW __nonnull ((1, 2));
362            
363           extern int srandom_r (unsigned int __seed, struct random_data *__buf)
364           __THROW __nonnull ((2));
365            
366           extern int initstate_r (unsigned int __seed, char *__restrict __statebuf,
367           size_t __statelen,
368           struct random_data *__restrict __buf)
369           __THROW __nonnull ((2, 4));
370            
371           extern int setstate_r (char *__restrict __statebuf,
372           struct random_data *__restrict __buf)
373           __THROW __nonnull ((1, 2));
374           # endif /* Use misc. */
375           #endif /* Use SVID || extended X/Open || BSD. */
376            
377            
378           __BEGIN_NAMESPACE_STD
379           /* Return a random integer between 0 and RAND_MAX inclusive. */
380           extern int rand (void) __THROW;
381           /* Seed the random number generator with the given number. */
382           extern void srand (unsigned int __seed) __THROW;
383           __END_NAMESPACE_STD
384            
385           #ifdef __USE_POSIX
386           /* Reentrant interface according to POSIX.1. */
387           extern int rand_r (unsigned int *__seed) __THROW;
388           #endif
389            
390            
391           #if defined __USE_SVID || defined __USE_XOPEN
392           /* System V style 48-bit random number generator functions. */
393            
394           /* Return non-negative, double-precision floating-point value in [0.0,1.0). */
395           extern double drand48 (void) __THROW;
396           extern double erand48 (unsigned short int __xsubi[3]) __THROW __nonnull ((1));
397            
398           /* Return non-negative, long integer in [0,2^31). */
399           extern long int lrand48 (void) __THROW;
400           extern long int nrand48 (unsigned short int __xsubi[3])
401           __THROW __nonnull ((1));
402            
403           /* Return signed, long integers in [-2^31,2^31). */
404           extern long int mrand48 (void) __THROW;
405           extern long int jrand48 (unsigned short int __xsubi[3])
406           __THROW __nonnull ((1));
407            
408           /* Seed random number generator. */
409           extern void srand48 (long int __seedval) __THROW;
410           extern unsigned short int *seed48 (unsigned short int __seed16v[3])
411           __THROW __nonnull ((1));
412           extern void lcong48 (unsigned short int __param[7]) __THROW __nonnull ((1));
413            
414           # ifdef __USE_MISC
415           /* Data structure for communication with thread safe versions. This
416           type is to be regarded as opaque. It's only exported because users
417           have to allocate objects of this type. */
418           struct drand48_data
419           {
420           unsigned short int __x[3]; /* Current state. */
421           unsigned short int __old_x[3]; /* Old state. */
422           unsigned short int __c; /* Additive const. in congruential formula. */
423           unsigned short int __init; /* Flag for initializing. */
424           unsigned long long int __a; /* Factor in congruential formula. */
425           };
426            
427           /* Return non-negative, double-precision floating-point value in [0.0,1.0). */
428           extern int drand48_r (struct drand48_data *__restrict __buffer,
429           double *__restrict __result) __THROW __nonnull ((1, 2));
430           extern int erand48_r (unsigned short int __xsubi[3],
431           struct drand48_data *__restrict __buffer,
432           double *__restrict __result) __THROW __nonnull ((1, 2));
433            
434           /* Return non-negative, long integer in [0,2^31). */
435           extern int lrand48_r (struct drand48_data *__restrict __buffer,
436           long int *__restrict __result)
437           __THROW __nonnull ((1, 2));
438           extern int nrand48_r (unsigned short int __xsubi[3],
439           struct drand48_data *__restrict __buffer,
440           long int *__restrict __result)
441           __THROW __nonnull ((1, 2));
442            
443           /* Return signed, long integers in [-2^31,2^31). */
444           extern int mrand48_r (struct drand48_data *__restrict __buffer,
445           long int *__restrict __result)
446           __THROW __nonnull ((1, 2));
447           extern int jrand48_r (unsigned short int __xsubi[3],
448           struct drand48_data *__restrict __buffer,
449           long int *__restrict __result)
450           __THROW __nonnull ((1, 2));
451            
452           /* Seed random number generator. */
453           extern int srand48_r (long int __seedval, struct drand48_data *__buffer)
454           __THROW __nonnull ((2));
455            
456           extern int seed48_r (unsigned short int __seed16v[3],
457           struct drand48_data *__buffer) __THROW __nonnull ((1, 2));
458            
459           extern int lcong48_r (unsigned short int __param[7],
460           struct drand48_data *__buffer)
461           __THROW __nonnull ((1, 2));
462           # endif /* Use misc. */
463           #endif /* Use SVID or X/Open. */
464            
465           #endif /* don't just need malloc and calloc */
466            
467           #ifndef __malloc_and_calloc_defined
468           # define __malloc_and_calloc_defined
469           __BEGIN_NAMESPACE_STD
470           /* Allocate SIZE bytes of memory. */
471           extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
472           /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
473           extern void *calloc (size_t __nmemb, size_t __size)
474           __THROW __attribute_malloc__ __wur;
475           __END_NAMESPACE_STD
476           #endif
477            
478           #ifndef __need_malloc_and_calloc
479           __BEGIN_NAMESPACE_STD
480           /* Re-allocate the previously allocated block
481           in PTR, making the new block SIZE bytes long. */
482           /* __attribute_malloc__ is not used, because if realloc returns
483           the same pointer that was passed to it, aliasing needs to be allowed
484           between objects pointed by the old and new pointers. */
485           extern void *realloc (void *__ptr, size_t __size)
486           __THROW __attribute_warn_unused_result__;
487           /* Free a block allocated by `malloc', `realloc' or `calloc'. */
488           extern void free (void *__ptr) __THROW;
489           __END_NAMESPACE_STD
490            
491           #ifdef __USE_MISC
492           /* Free a block. An alias for `free'. (Sun Unices). */
493           extern void cfree (void *__ptr) __THROW;
494           #endif /* Use misc. */
495            
496           #if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC
497           # include
498           #endif /* Use GNU, BSD, or misc. */
499            
500           #if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K) \
501           || defined __USE_BSD
502           /* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */
503           extern void *valloc (size_t __size) __THROW __attribute_malloc__ __wur;
504           #endif
505            
506           #ifdef __USE_XOPEN2K
507           /* Allocate memory of SIZE bytes with an alignment of ALIGNMENT. */
508           extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
509           __THROW __nonnull ((1)) __wur;
510           #endif
511            
512           __BEGIN_NAMESPACE_STD
513           /* Abort execution and generate a core-dump. */
514           extern void abort (void) __THROW __attribute__ ((__noreturn__));
515            
516            
517           /* Register a function to be called when `exit' is called. */
518           extern int atexit (void (*__func) (void)) __THROW __nonnull ((1));
519            
520           #ifdef __USE_GNU
521           // XXX There should be a macro to signal with C++ revision is used.
522           // XXX This function is in the C++1x revision.
523           /* Register a function to be called when `quick_exit' is called. */
524           # ifdef __cplusplus
525           extern "C++" int at_quick_exit (void (*__func) (void))
526           __THROW __asm ("at_quick_exit") __nonnull ((1));
527           # else
528           extern int at_quick_exit (void (*__func) (void)) __THROW __nonnull ((1));
529           # endif
530           #endif
531           __END_NAMESPACE_STD
532            
533           #ifdef __USE_MISC
534           /* Register a function to be called with the status
535           given to `exit' and the given argument. */
536           extern int on_exit (void (*__func) (int __status, void *__arg), void *__arg)
537           __THROW __nonnull ((1));
538           #endif
539            
540           __BEGIN_NAMESPACE_STD
541           /* Call all functions registered with `atexit' and `on_exit',
542           in the reverse of the order in which they were registered,
543           perform stdio cleanup, and terminate program execution with STATUS. */
544           extern void exit (int __status) __THROW __attribute__ ((__noreturn__));
545            
546           #ifdef __USE_GNU
547           // XXX There should be a macro to signal with C++ revision is used.
548           // XXX This function is in the C++1x revision.
549           /* Call all functions registered with `at_quick_exit' in the reverse
550           of the order in which they were registered and terminate program
551           execution with STATUS. */
552           extern void quick_exit (int __status) __THROW __attribute__ ((__noreturn__));
553           #endif
554           __END_NAMESPACE_STD
555            
556           #ifdef __USE_ISOC99
557           __BEGIN_NAMESPACE_C99
558           /* Terminate the program with STATUS without calling any of the
559           functions registered with `atexit' or `on_exit'. */
560           extern void _Exit (int __status) __THROW __attribute__ ((__noreturn__));
561           __END_NAMESPACE_C99
562           #endif
563            
564            
565           __BEGIN_NAMESPACE_STD
566           /* Return the value of envariable NAME, or NULL if it doesn't exist. */
567           extern char *getenv (__const char *__name) __THROW __nonnull ((1)) __wur;
568           __END_NAMESPACE_STD
569            
570           /* This function is similar to the above but returns NULL if the
571           programs is running with SUID or SGID enabled. */
572           extern char *__secure_getenv (__const char *__name)
573           __THROW __nonnull ((1)) __wur;
574            
575           #if defined __USE_SVID || defined __USE_XOPEN
576           /* The SVID says this is in , but this seems a better place. */
577           /* Put STRING, which is of the form "NAME=VALUE", in the environment.
578           If there is no `=', remove NAME from the environment. */
579           extern int putenv (char *__string) __THROW __nonnull ((1));
580           #endif
581            
582           #if defined __USE_BSD || defined __USE_XOPEN2K
583           /* Set NAME to VALUE in the environment.
584           If REPLACE is nonzero, overwrite an existing value. */
585           extern int setenv (__const char *__name, __const char *__value, int __replace)
586           __THROW __nonnull ((2));
587            
588           /* Remove the variable NAME from the environment. */
589           extern int unsetenv (__const char *__name) __THROW __nonnull ((1));
590           #endif
591            
592           #ifdef __USE_MISC
593           /* The `clearenv' was planned to be added to POSIX.1 but probably
594           never made it. Nevertheless the POSIX.9 standard (POSIX bindings
595           for Fortran 77) requires this function. */
596           extern int clearenv (void) __THROW;
597           #endif
598            
599            
600           #if defined __USE_MISC \
601           || (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K)
602           /* Generate a unique temporary file name from TEMPLATE.
603           The last six characters of TEMPLATE must be "XXXXXX";
604           they are replaced with a string that makes the file name unique.
605           Returns TEMPLATE, or a null pointer if it cannot get a unique file name. */
606           extern char *mktemp (char *__template) __THROW __nonnull ((1)) __wur;
607           #endif
608            
609           #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED \
610           || defined __USE_XOPEN2K8
611           /* Generate a unique temporary file name from TEMPLATE.
612           The last six characters of TEMPLATE must be "XXXXXX";
613           they are replaced with a string that makes the filename unique.
614           Returns a file descriptor open on the file for reading and writing,
615           or -1 if it cannot create a uniquely-named file.
616            
617           This function is a possible cancellation point and therefore not
618           marked with __THROW. */
619           # ifndef __USE_FILE_OFFSET64
620           extern int mkstemp (char *__template) __nonnull ((1)) __wur;
621           # else
622           # ifdef __REDIRECT
623           extern int __REDIRECT (mkstemp, (char *__template), mkstemp64)
624           __nonnull ((1)) __wur;
625           # else
626           # define mkstemp mkstemp64
627           # endif
628           # endif
629           # ifdef __USE_LARGEFILE64
630           extern int mkstemp64 (char *__template) __nonnull ((1)) __wur;
631           # endif
632           #endif
633            
634           #ifdef __USE_MISC
635           /* Similar to mkstemp, but the template can have a suffix after the
636           XXXXXX. The length of the suffix is specified in the second
637           parameter.
638            
639           This function is a possible cancellation point and therefore not
640           marked with __THROW. */
641           # ifndef __USE_FILE_OFFSET64
642           extern int mkstemps (char *__template, int __suffixlen) __nonnull ((1)) __wur;
643           # else
644           # ifdef __REDIRECT
645           extern int __REDIRECT (mkstemps, (char *__template, int __suffixlen),
646           mkstemps64) __nonnull ((1)) __wur;
647           # else
648           # define mkstemps mkstemps64
649           # endif
650           # endif
651           # ifdef __USE_LARGEFILE64
652           extern int mkstemps64 (char *__template, int __suffixlen)
653           __nonnull ((1)) __wur;
654           # endif
655           #endif
656            
657           #if defined __USE_BSD || defined __USE_XOPEN2K8
658           /* Create a unique temporary directory from TEMPLATE.
659           The last six characters of TEMPLATE must be "XXXXXX";
660           they are replaced with a string that makes the directory name unique.
661           Returns TEMPLATE, or a null pointer if it cannot get a unique name.
662           The directory is created mode 700. */
663           extern char *mkdtemp (char *__template) __THROW __nonnull ((1)) __wur;
664           #endif
665            
666           #ifdef __USE_GNU
667           /* Generate a unique temporary file name from TEMPLATE similar to
668           mkstemp. But allow the caller to pass additional flags which are
669           used in the open call to create the file..
670            
671           This function is a possible cancellation point and therefore not
672           marked with __THROW. */
673           # ifndef __USE_FILE_OFFSET64
674           extern int mkostemp (char *__template, int __flags) __nonnull ((1)) __wur;
675           # else
676           # ifdef __REDIRECT
677           extern int __REDIRECT (mkostemp, (char *__template, int __flags), mkostemp64)
678           __nonnull ((1)) __wur;
679           # else
680           # define mkostemp mkostemp64
681           # endif
682           # endif
683           # ifdef __USE_LARGEFILE64
684           extern int mkostemp64 (char *__template, int __flags) __nonnull ((1)) __wur;
685           # endif
686            
687           /* Similar to mkostemp, but the template can have a suffix after the
688           XXXXXX. The length of the suffix is specified in the second
689           parameter.
690            
691           This function is a possible cancellation point and therefore not
692           marked with __THROW. */
693           # ifndef __USE_FILE_OFFSET64
694           extern int mkostemps (char *__template, int __suffixlen, int __flags)
695           __nonnull ((1)) __wur;
696           # else
697           # ifdef __REDIRECT
698           extern int __REDIRECT (mkostemps, (char *__template, int __suffixlen,
699           int __flags), mkostemps64)
700           __nonnull ((1)) __wur;
701           # else
702           # define mkostemps mkostemps64
703           # endif
704           # endif
705           # ifdef __USE_LARGEFILE64
706           extern int mkostemps64 (char *__template, int __suffixlen, int __flags)
707           __nonnull ((1)) __wur;
708           # endif
709           #endif
710            
711            
712           __BEGIN_NAMESPACE_STD
713           /* Execute the given line as a shell command.
714            
715           This function is a cancellation point and therefore not marked with
716           __THROW. */
717           extern int system (__const char *__command) __wur;
718           __END_NAMESPACE_STD
719            
720            
721           #ifdef __USE_GNU
722           /* Return a malloc'd string containing the canonical absolute name of the
723           existing named file. */
724           extern char *canonicalize_file_name (__const char *__name)
725           __THROW __nonnull ((1)) __wur;
726           #endif
727            
728           #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
729           /* Return the canonical absolute name of file NAME. If RESOLVED is
730           null, the result is malloc'd; otherwise, if the canonical name is
731           PATH_MAX chars or more, returns null with `errno' set to
732           ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars,
733           returns the name in RESOLVED. */
734           extern char *realpath (__const char *__restrict __name,
735           char *__restrict __resolved) __THROW __wur;
736           #endif
737            
738            
739           /* Shorthand for type of comparison functions. */
740           #ifndef __COMPAR_FN_T
741           # define __COMPAR_FN_T
742           typedef int (*__compar_fn_t) (__const void *, __const void *);
743            
744           # ifdef __USE_GNU
745           typedef __compar_fn_t comparison_fn_t;
746           # endif
747           #endif
748           #ifdef __USE_GNU
749           typedef int (*__compar_d_fn_t) (__const void *, __const void *, void *);
750           #endif
751            
752           __BEGIN_NAMESPACE_STD
753           /* Do a binary search for KEY in BASE, which consists of NMEMB elements
754           of SIZE bytes each, using COMPAR to perform the comparisons. */
755           extern void *bsearch (__const void *__key, __const void *__base,
756           size_t __nmemb, size_t __size, __compar_fn_t __compar)
757           __nonnull ((1, 2, 5)) __wur;
758            
759           /* Sort NMEMB elements of BASE, of SIZE bytes each,
760           using COMPAR to perform the comparisons. */
761           extern void qsort (void *__base, size_t __nmemb, size_t __size,
762           __compar_fn_t __compar) __nonnull ((1, 4));
763           #ifdef __USE_GNU
764           extern void qsort_r (void *__base, size_t __nmemb, size_t __size,
765           __compar_d_fn_t __compar, void *__arg)
766           __nonnull ((1, 4));
767           #endif
768            
769            
770           /* Return the absolute value of X. */
771           extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
772           extern long int labs (long int __x) __THROW __attribute__ ((__const__)) __wur;
773           __END_NAMESPACE_STD
774            
775           #ifdef __USE_ISOC99
776           __extension__ extern long long int llabs (long long int __x)
777           __THROW __attribute__ ((__const__)) __wur;
778           #endif
779            
780            
781           __BEGIN_NAMESPACE_STD
782           /* Return the `div_t', `ldiv_t' or `lldiv_t' representation
783           of the value of NUMER over DENOM. */
784           /* GCC may have built-ins for these someday. */
785           extern div_t div (int __numer, int __denom)
786           __THROW __attribute__ ((__const__)) __wur;
787           extern ldiv_t ldiv (long int __numer, long int __denom)
788           __THROW __attribute__ ((__const__)) __wur;
789           __END_NAMESPACE_STD
790            
791           #ifdef __USE_ISOC99
792           __BEGIN_NAMESPACE_C99
793           __extension__ extern lldiv_t lldiv (long long int __numer,
794           long long int __denom)
795           __THROW __attribute__ ((__const__)) __wur;
796           __END_NAMESPACE_C99
797           #endif
798            
799            
800           #if (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K) \
801           || defined __USE_SVID
802           /* Convert floating point numbers to strings. The returned values are
803           valid only until another call to the same function. */
804            
805           /* Convert VALUE to a string with NDIGIT digits and return a pointer to
806           this. Set *DECPT with the position of the decimal character and *SIGN
807           with the sign of the number. */
808           extern char *ecvt (double __value, int __ndigit, int *__restrict __decpt,
809           int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
810            
811           /* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT
812           with the position of the decimal character and *SIGN with the sign of
813           the number. */
814           extern char *fcvt (double __value, int __ndigit, int *__restrict __decpt,
815           int *__restrict __sign) __THROW __nonnull ((3, 4)) __wur;
816            
817           /* If possible convert VALUE to a string with NDIGIT significant digits.
818           Otherwise use exponential representation. The resulting string will
819           be written to BUF. */
820           extern char *gcvt (double __value, int __ndigit, char *__buf)
821           __THROW __nonnull ((3)) __wur;
822            
823            
824           # ifdef __USE_MISC
825           /* Long double versions of above functions. */
826           extern char *qecvt (long double __value, int __ndigit,
827           int *__restrict __decpt, int *__restrict __sign)
828           __THROW __nonnull ((3, 4)) __wur;
829           extern char *qfcvt (long double __value, int __ndigit,
830           int *__restrict __decpt, int *__restrict __sign)
831           __THROW __nonnull ((3, 4)) __wur;
832           extern char *qgcvt (long double __value, int __ndigit, char *__buf)
833           __THROW __nonnull ((3)) __wur;
834            
835            
836           /* Reentrant version of the functions above which provide their own
837           buffers. */
838           extern int ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
839           int *__restrict __sign, char *__restrict __buf,
840           size_t __len) __THROW __nonnull ((3, 4, 5));
841           extern int fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
842           int *__restrict __sign, char *__restrict __buf,
843           size_t __len) __THROW __nonnull ((3, 4, 5));
844            
845           extern int qecvt_r (long double __value, int __ndigit,
846           int *__restrict __decpt, int *__restrict __sign,
847           char *__restrict __buf, size_t __len)
848           __THROW __nonnull ((3, 4, 5));
849           extern int qfcvt_r (long double __value, int __ndigit,
850           int *__restrict __decpt, int *__restrict __sign,
851           char *__restrict __buf, size_t __len)
852           __THROW __nonnull ((3, 4, 5));
853           # endif /* misc */
854           #endif /* use MISC || use X/Open Unix */
855            
856            
857           __BEGIN_NAMESPACE_STD
858           /* Return the length of the multibyte character
859           in S, which is no longer than N. */
860           extern int mblen (__const char *__s, size_t __n) __THROW __wur;
861           /* Return the length of the given multibyte character,
862           putting its `wchar_t' representation in *PWC. */
863           extern int mbtowc (wchar_t *__restrict __pwc,
864           __const char *__restrict __s, size_t __n) __THROW __wur;
865           /* Put the multibyte character represented
866           by WCHAR in S, returning its length. */
867           extern int wctomb (char *__s, wchar_t __wchar) __THROW __wur;
868            
869            
870           /* Convert a multibyte string to a wide char string. */
871           extern size_t mbstowcs (wchar_t *__restrict __pwcs,
872           __const char *__restrict __s, size_t __n) __THROW;
873           /* Convert a wide char string to multibyte string. */
874           extern size_t wcstombs (char *__restrict __s,
875           __const wchar_t *__restrict __pwcs, size_t __n)
876           __THROW;
877           __END_NAMESPACE_STD
878            
879            
880           #ifdef __USE_SVID
881           /* Determine whether the string value of RESPONSE matches the affirmation
882           or negative response expression as specified by the LC_MESSAGES category
883           in the program's current locale. Returns 1 if affirmative, 0 if
884           negative, and -1 if not matching. */
885           extern int rpmatch (__const char *__response) __THROW __nonnull ((1)) __wur;
886           #endif
887            
888            
889           #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
890           /* Parse comma separated suboption from *OPTIONP and match against
891           strings in TOKENS. If found return index and set *VALUEP to
892           optional value introduced by an equal sign. If the suboption is
893           not part of TOKENS return in *VALUEP beginning of unknown
894           suboption. On exit *OPTIONP is set to the beginning of the next
895           token or at the terminating NUL character. */
896           extern int getsubopt (char **__restrict __optionp,
897           char *__const *__restrict __tokens,
898           char **__restrict __valuep)
899           __THROW __nonnull ((1, 2, 3)) __wur;
900           #endif
901            
902            
903           #ifdef __USE_XOPEN
904           /* Setup DES tables according KEY. */
905           extern void setkey (__const char *__key) __THROW __nonnull ((1));
906           #endif
907            
908            
909           /* X/Open pseudo terminal handling. */
910            
911           #ifdef __USE_XOPEN2KXSI
912           /* Return a master pseudo-terminal handle. */
913           extern int posix_openpt (int __oflag) __wur;
914           #endif
915            
916           #ifdef __USE_XOPEN
917           /* The next four functions all take a master pseudo-tty fd and
918           perform an operation on the associated slave: */
919            
920           /* Chown the slave to the calling user. */
921           extern int grantpt (int __fd) __THROW;
922            
923           /* Release an internal lock so the slave can be opened.
924           Call after grantpt(). */
925           extern int unlockpt (int __fd) __THROW;
926            
927           /* Return the pathname of the pseudo terminal slave assoicated with
928           the master FD is open on, or NULL on errors.
929           The returned storage is good until the next call to this function. */
930           extern char *ptsname (int __fd) __THROW __wur;
931           #endif
932            
933           #ifdef __USE_GNU
934           /* Store at most BUFLEN characters of the pathname of the slave pseudo
935           terminal associated with the master FD is open on in BUF.
936           Return 0 on success, otherwise an error number. */
937           extern int ptsname_r (int __fd, char *__buf, size_t __buflen)
938           __THROW __nonnull ((2));
939            
940           /* Open a master pseudo terminal and return its file descriptor. */
941           extern int getpt (void);
942           #endif
943            
944           #ifdef __USE_BSD
945           /* Put the 1 minute, 5 minute and 15 minute load averages into the first
946           NELEM elements of LOADAVG. Return the number written (never more than
947           three, but may be less than NELEM), or -1 if an error occurred. */
948           extern int getloadavg (double __loadavg[], int __nelem)
949           __THROW __nonnull ((1));
950           #endif
951            
952            
953           /* Define some macros helping to catch buffer overflows. */
954           #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
955           # include
956           #endif
957           #ifdef __LDBL_COMPAT
958           # include
959           #endif
960            
961           #endif /* don't just need malloc and calloc */
962           #undef __need_malloc_and_calloc
963            
964           __END_DECLS
965            
966           #endif /* stdlib.h */