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stdlib.h revision 1.124
      1 /*	$NetBSD: stdlib.h,v 1.124 2022/10/05 12:09:07 nia Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)stdlib.h	8.5 (Berkeley) 5/19/95
     32  */
     33 
     34 #ifndef _STDLIB_H_
     35 #define _STDLIB_H_
     36 
     37 #include <sys/cdefs.h>
     38 #include <sys/featuretest.h>
     39 
     40 #if defined(_NETBSD_SOURCE)
     41 #include <sys/types.h>		/* for quad_t, etc. */
     42 #endif
     43 
     44 #include <machine/ansi.h>
     45 
     46 #ifdef	_BSD_SIZE_T_
     47 typedef	_BSD_SIZE_T_	size_t;
     48 #undef	_BSD_SIZE_T_
     49 #endif
     50 
     51 #if defined(_BSD_WCHAR_T_) && !defined(__cplusplus)
     52 typedef	_BSD_WCHAR_T_	wchar_t;
     53 #undef	_BSD_WCHAR_T_
     54 #endif
     55 
     56 typedef struct {
     57 	int quot;		/* quotient */
     58 	int rem;		/* remainder */
     59 } div_t;
     60 
     61 typedef struct {
     62 	long quot;		/* quotient */
     63 	long rem;		/* remainder */
     64 } ldiv_t;
     65 
     66 #if !defined(_ANSI_SOURCE) && \
     67     (defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
     68      (__cplusplus - 0) >= 201103L || defined(_NETBSD_SOURCE))
     69 typedef struct {
     70 	/* LONGLONG */
     71 	long long int quot;	/* quotient */
     72 	/* LONGLONG */
     73 	long long int rem;	/* remainder */
     74 } lldiv_t;
     75 #endif
     76 
     77 #if defined(_NETBSD_SOURCE)
     78 typedef struct {
     79 	quad_t quot;		/* quotient */
     80 	quad_t rem;		/* remainder */
     81 } qdiv_t;
     82 #endif
     83 
     84 
     85 #include <sys/null.h>
     86 
     87 #define	EXIT_FAILURE	1
     88 #define	EXIT_SUCCESS	0
     89 
     90 #define	RAND_MAX	0x7fffffff
     91 
     92 extern size_t __mb_cur_max;
     93 #define	MB_CUR_MAX	__mb_cur_max
     94 
     95 __BEGIN_DECLS
     96 __dead	 void _Exit(int);
     97 __dead	 void abort(void);
     98 __constfunc	int abs(int);
     99 int	 atexit(void (*)(void));
    100 double	 atof(const char *);
    101 int	 atoi(const char *);
    102 long	 atol(const char *);
    103 #ifndef __BSEARCH_DECLARED
    104 #define __BSEARCH_DECLARED
    105 /* also in search.h */
    106 void	*bsearch(const void *, const void *, size_t, size_t,
    107     int (*)(const void *, const void *));
    108 #endif /* __BSEARCH_DECLARED */
    109 void	*calloc(size_t, size_t);
    110 div_t	 div(int, int);
    111 __dead	 void exit(int);
    112 void	 free(void *);
    113 __aconst char *getenv(const char *);
    114 __constfunc long
    115 	 labs(long);
    116 ldiv_t	 ldiv(long, long);
    117 void	*malloc(size_t);
    118 void	 qsort(void *, size_t, size_t, int (*)(const void *, const void *));
    119 int	 rand(void);
    120 void	*realloc(void *, size_t);
    121 void	 srand(unsigned);
    122 double	 strtod(const char * __restrict, char ** __restrict);
    123 long	 strtol(const char * __restrict, char ** __restrict, int);
    124 unsigned long
    125 	 strtoul(const char * __restrict, char ** __restrict, int);
    126 #ifdef _OPENBSD_SOURCE
    127 long long strtonum(const char *, long long, long long, const char **);
    128 void	*reallocarray(void *, size_t, size_t);
    129 #endif
    130 int	 system(const char *);
    131 
    132 /* These are currently just stubs. */
    133 int	 mblen(const char *, size_t);
    134 size_t	 mbstowcs(wchar_t * __restrict, const char * __restrict, size_t);
    135 int	 wctomb(char *, wchar_t);
    136 int	 mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
    137 size_t	 wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
    138 
    139 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
    140     defined(_NETBSD_SOURCE)
    141 
    142 
    143 /*
    144  * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
    145  */
    146 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
    147     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
    148 int	 rand_r(unsigned int *);
    149 #endif
    150 
    151 
    152 /*
    153  * X/Open Portability Guide >= Issue 4
    154  */
    155 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
    156 double	 drand48(void);
    157 double	 erand48(unsigned short[3]);
    158 long	 jrand48(unsigned short[3]);
    159 void	 lcong48(unsigned short[7]);
    160 long	 lrand48(void);
    161 long	 mrand48(void);
    162 long	 nrand48(unsigned short[3]);
    163 unsigned short *
    164 	 seed48(unsigned short[3]);
    165 void	 srand48(long);
    166 
    167 #ifndef __LIBC12_SOURCE__
    168 int	 putenv(char *) __RENAME(__putenv50);
    169 #endif
    170 #endif
    171 
    172 
    173 /*
    174  * X/Open Portability Guide >= Issue 4 Version 2
    175  */
    176 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    177     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
    178 long	 a64l(const char *);
    179 char	*l64a(long);
    180 
    181 long	 random(void);
    182 char	*setstate(char *);
    183 #ifndef __LIBC12_SOURCE__
    184 char	*initstate(unsigned int, char *, size_t) __RENAME(__initstate60);
    185 void	 srandom(unsigned int) __RENAME(__srandom60);
    186 #endif
    187 #ifdef _NETBSD_SOURCE
    188 #define	RANDOM_MAX	0x7fffffff	/* (((long)1 << 31) - 1) */
    189 int	 mkostemp(char *, int);
    190 int	 mkostemps(char *, int, int);
    191 #endif
    192 
    193 char	*mktemp(char *)
    194 #ifdef __MKTEMP_OK__
    195 	__RENAME(_mktemp)
    196 #endif
    197 	;
    198 
    199 int	 setkey(const char *);
    200 
    201 char	*realpath(const char * __restrict, char * __restrict);
    202 
    203 int	 ttyslot(void);
    204 
    205 void	*valloc(size_t);		/* obsoleted by malloc() */
    206 
    207 int	 grantpt(int);
    208 int	 unlockpt(int);
    209 char	*ptsname(int);
    210 #endif
    211 
    212 /*
    213  * ISO C99
    214  */
    215 #if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
    216     defined(_NETBSD_SOURCE) || (__cplusplus - 0) >= 201103L
    217 
    218 /* LONGLONG */
    219 long long int	atoll(const char *);
    220 /* LONGLONG */
    221 long long int	llabs(long long int);
    222 /* LONGLONG */
    223 lldiv_t		lldiv(long long int, long long int);
    224 /* LONGLONG */
    225 long long int	strtoll(const char * __restrict, char ** __restrict, int);
    226 /* LONGLONG */
    227 unsigned long long int
    228 		strtoull(const char * __restrict, char ** __restrict, int);
    229 float		strtof(const char * __restrict, char ** __restrict);
    230 long double	strtold(const char * __restrict, char ** __restrict);
    231 #endif
    232 
    233 #if defined(_ISOC11_SOURCE) || (__STDC_VERSION__ - 0) >= 201101L || \
    234     defined(_NETBSD_SOURCE) || (__cplusplus - 0) >= 201103L
    235 void	*aligned_alloc(size_t, size_t);
    236 int	at_quick_exit(void (*)(void));
    237 __dead void quick_exit(int);
    238 #endif
    239 
    240 /*
    241  * The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
    242  */
    243 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
    244     defined(_NETBSD_SOURCE)
    245 int	 setenv(const char *, const char *, int);
    246 #ifndef __LIBC12_SOURCE__
    247 int	 unsetenv(const char *) __RENAME(__unsetenv13);
    248 #endif
    249 
    250 int	 posix_openpt(int);
    251 int	 posix_memalign(void **, size_t, size_t);
    252 #endif
    253 
    254 /*
    255  * The Open Group Base Specifications, Issue 7; IEEE Std 1003.1-2008 (POSIX)
    256  *   or
    257  * X/Open Portability Guide >= Issue 4 Version 2
    258  */
    259 #if (_POSIX_C_SOURCE - 0) >= 200809L || \
    260     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    261     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
    262 char	*mkdtemp(char *);
    263 int	 mkstemp(char *);
    264 
    265 int	 getsubopt(char **, char * const *, char **);
    266 #endif
    267 
    268 /*
    269  * Implementation-defined extensions
    270  */
    271 #if defined(_NETBSD_SOURCE)
    272 #if defined(__PCC__) && !defined(__GNUC__)
    273 #define alloca(size) __builtin_alloca(size)
    274 #else
    275 void	*alloca(size_t);
    276 #endif /* __GNUC__ */
    277 
    278 uint32_t arc4random(void);
    279 void	 arc4random_stir(void);
    280 void	 arc4random_buf(void *, size_t);
    281 uint32_t arc4random_uniform(uint32_t);
    282 void	 arc4random_addrandom(unsigned char *, int);
    283 char	*getbsize(int *, long *);
    284 char	*cgetcap(char *, const char *, int);
    285 int	 cgetclose(void);
    286 int	 cgetent(char **, const char * const *, const char *);
    287 int	 cgetfirst(char **, const char * const *);
    288 int	 cgetmatch(const char *, const char *);
    289 int	 cgetnext(char **, const char * const *);
    290 int	 cgetnum(char *, const char *, long *);
    291 int	 cgetset(const char *);
    292 int	 cgetstr(char *, const char *, char **);
    293 int	 cgetustr(char *, const char *, char **);
    294 void	 csetexpandtc(int);
    295 
    296 int	 daemon(int, int);
    297 int	 devname_r(dev_t, mode_t, char *, size_t);
    298 #ifndef __LIBC12_SOURCE__
    299 __aconst char *devname(dev_t, mode_t) __RENAME(__devname50);
    300 #endif
    301 
    302 #define	HN_DECIMAL		0x01
    303 #define	HN_NOSPACE		0x02
    304 #define	HN_B			0x04
    305 #define	HN_DIVISOR_1000		0x08
    306 
    307 #define	HN_GETSCALE		0x10
    308 #define	HN_AUTOSCALE		0x20
    309 
    310 int	 humanize_number(char *, size_t, int64_t, const char *, int, int);
    311 int	 dehumanize_number(const char *, int64_t *);
    312 ssize_t	 hmac(const char *, const void *, size_t, const void *, size_t, void *,
    313    size_t);
    314 
    315 devmajor_t getdevmajor(const char *, mode_t);
    316 int	 getloadavg(double [], int);
    317 
    318 int	 getenv_r(const char *, char *, size_t);
    319 
    320 void	 cfree(void *);
    321 
    322 int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
    323 int	 mergesort(void *, size_t, size_t,
    324 	    int (*)(const void *, const void *));
    325 int	 ptsname_r(int, char *, size_t);
    326 int	 radixsort(const unsigned char **, int, const unsigned char *,
    327 	    unsigned);
    328 int	 sradixsort(const unsigned char **, int, const unsigned char *,
    329 	    unsigned);
    330 
    331 void	 mi_vector_hash(const void * __restrict, size_t, uint32_t,
    332 	    uint32_t[3]);
    333 
    334 void	 setproctitle(const char *, ...)
    335 	    __printflike(1, 2);
    336 const char *getprogname(void) __constfunc;
    337 void	setprogname(const char *);
    338 
    339 quad_t	 qabs(quad_t);
    340 quad_t	 strtoq(const char * __restrict, char ** __restrict, int);
    341 u_quad_t strtouq(const char * __restrict, char ** __restrict, int);
    342 
    343 	/* LONGLONG */
    344 long long strsuftoll(const char *, const char *, long long, long long);
    345 	/* LONGLONG */
    346 long long strsuftollx(const char *, const char *, long long, long long,
    347 	    		char *, size_t);
    348 
    349 int	 l64a_r(long, char *, int);
    350 
    351 size_t	shquote(const char *, char *, size_t);
    352 size_t	shquotev(int, char * const *, char *, size_t);
    353 
    354 int	reallocarr(void *, size_t, size_t);
    355 #endif /* _NETBSD_SOURCE */
    356 #endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
    357 
    358 #if defined(_NETBSD_SOURCE)
    359 qdiv_t	 qdiv(quad_t, quad_t);
    360 #endif
    361 
    362 #if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE)
    363 #  ifndef __LOCALE_T_DECLARED
    364 typedef struct _locale		*locale_t;
    365 #  define __LOCALE_T_DECLARED
    366 #  endif
    367 double		strtod_l(const char * __restrict, char ** __restrict, locale_t);
    368 float		strtof_l(const char * __restrict, char ** __restrict, locale_t);
    369 long double	strtold_l(const char * __restrict, char ** __restrict,
    370 			  locale_t);
    371 long	 strtol_l(const char * __restrict, char ** __restrict, int, locale_t);
    372 unsigned long
    373 	 strtoul_l(const char * __restrict, char ** __restrict, int, locale_t);
    374 /* LONGLONG */
    375 long long int
    376 	strtoll_l(const char * __restrict, char ** __restrict, int, locale_t);
    377 /* LONGLONG */
    378 unsigned long long int
    379 	strtoull_l(const char * __restrict, char ** __restrict, int, locale_t);
    380 
    381 #  if defined(_NETBSD_SOURCE)
    382 quad_t	 strtoq_l(const char * __restrict, char ** __restrict, int, locale_t);
    383 u_quad_t strtouq_l(const char * __restrict, char ** __restrict, int, locale_t);
    384 
    385 size_t	_mb_cur_max_l(locale_t);
    386 #define	MB_CUR_MAX_L(loc)	_mb_cur_max_l(loc)
    387 int	 mblen_l(const char *, size_t, locale_t);
    388 size_t	 mbstowcs_l(wchar_t * __restrict, const char * __restrict, size_t,
    389 		    locale_t);
    390 int	 wctomb_l(char *, wchar_t, locale_t);
    391 int	 mbtowc_l(wchar_t * __restrict, const char * __restrict, size_t,
    392 	          locale_t);
    393 size_t	 wcstombs_l(char * __restrict, const wchar_t * __restrict, size_t,
    394 		    locale_t);
    395 
    396 #  endif /* _NETBSD_SOURCE */
    397 #endif /* _POSIX_C_SOURCE >= 200809 || _NETBSD_SOURCE */
    398 
    399 __END_DECLS
    400 
    401 #endif /* !_STDLIB_H_ */
    402