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stdlib.h revision 1.100
      1 /*	$NetBSD: stdlib.h,v 1.100 2012/06/21 21:13:29 christos 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      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 __pure	 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 __pure 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 int	 system(const char *);
    127 
    128 /* These are currently just stubs. */
    129 int	 mblen(const char *, size_t);
    130 size_t	 mbstowcs(wchar_t * __restrict, const char * __restrict, size_t);
    131 int	 wctomb(char *, wchar_t);
    132 int	 mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
    133 size_t	 wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
    134 
    135 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
    136     defined(_NETBSD_SOURCE)
    137 
    138 
    139 /*
    140  * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
    141  */
    142 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
    143     defined(_REENTRANT) || defined(_NETBSD_SOURCE)
    144 int	 rand_r(unsigned int *);
    145 #endif
    146 
    147 
    148 /*
    149  * X/Open Portability Guide >= Issue 4
    150  */
    151 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
    152 double	 drand48(void);
    153 double	 erand48(unsigned short[3]);
    154 long	 jrand48(unsigned short[3]);
    155 void	 lcong48(unsigned short[7]);
    156 long	 lrand48(void);
    157 long	 mrand48(void);
    158 long	 nrand48(unsigned short[3]);
    159 unsigned short *
    160 	 seed48(unsigned short[3]);
    161 void	 srand48(long);
    162 
    163 #ifndef __LIBC12_SOURCE__
    164 int	 putenv(char *) __RENAME(__putenv50);
    165 #endif
    166 #endif
    167 
    168 
    169 /*
    170  * X/Open Portability Guide >= Issue 4 Version 2
    171  */
    172 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    173     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
    174 long	 a64l(const char *);
    175 char	*l64a(long);
    176 
    177 char	*initstate(unsigned long, char *, size_t);
    178 long	 random(void);
    179 char	*setstate(char *);
    180 void	 srandom(unsigned long);
    181 #ifdef _NETBSD_SOURCE
    182 #define	RANDOM_MAX	0x7fffffff	/* (((long)1 << 31) - 1) */
    183 #endif
    184 
    185 char	*mkdtemp(char *);
    186 int	 mkstemp(char *);
    187 char	*mktemp(char *)
    188 #ifdef __MKTEMP_OK__
    189 	__RENAME(_mktemp)
    190 #endif
    191 	;
    192 
    193 int	 setkey(const char *);
    194 
    195 char	*realpath(const char * __restrict, char * __restrict);
    196 
    197 int	 ttyslot(void);
    198 
    199 void	*valloc(size_t);		/* obsoleted by malloc() */
    200 
    201 int	 grantpt(int);
    202 int	 unlockpt(int);
    203 char	*ptsname(int);
    204 #endif
    205 
    206 /*
    207  * ISO C99
    208  */
    209 #if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
    210     defined(_NETBSD_SOURCE)
    211 /* LONGLONG */
    212 long long int	atoll(const char *);
    213 /* LONGLONG */
    214 long long int	llabs(long long int);
    215 /* LONGLONG */
    216 lldiv_t		lldiv(long long int, long long int);
    217 /* LONGLONG */
    218 long long int	strtoll(const char * __restrict, char ** __restrict, int);
    219 /* LONGLONG */
    220 unsigned long long int
    221 		strtoull(const char * __restrict, char ** __restrict, int);
    222 float		strtof(const char * __restrict, char ** __restrict);
    223 long double	strtold(const char * __restrict, char ** __restrict);
    224 #endif
    225 
    226 /*
    227  * The Open Group Base Specifications, Issue 6; IEEE Std 1003.1-2001 (POSIX)
    228  */
    229 #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 600 || \
    230     defined(_NETBSD_SOURCE)
    231 int	 setenv(const char *, const char *, int);
    232 #ifndef __LIBC12_SOURCE__
    233 int	 unsetenv(const char *) __RENAME(__unsetenv13);
    234 #endif
    235 
    236 int	 posix_openpt(int);
    237 int	 posix_memalign(void **, size_t, size_t);
    238 #endif
    239 
    240 /*
    241  * Implementation-defined extensions
    242  */
    243 #if defined(_NETBSD_SOURCE)
    244 #if defined(alloca) && (alloca == __builtin_alloca) && \
    245 	defined(__GNUC__) && (__GNUC__ < 2)
    246 void	*alloca(int);     /* built-in for gcc */
    247 #elif defined(__PCC__) && !defined(__GNUC__)
    248 #define alloca(size) __builtin_alloca(size)
    249 #else
    250 void	*alloca(size_t);
    251 #endif /* __GNUC__ */
    252 
    253 uint32_t arc4random(void);
    254 void	 arc4random_stir(void);
    255 void	 arc4random_buf(void *, size_t);
    256 uint32_t arc4random_uniform(uint32_t);
    257 void	 arc4random_addrandom(u_char *, int);
    258 char	*getbsize(int *, long *);
    259 char	*cgetcap(char *, const char *, int);
    260 int	 cgetclose(void);
    261 int	 cgetent(char **, const char * const *, const char *);
    262 int	 cgetfirst(char **, const char * const *);
    263 int	 cgetmatch(const char *, const char *);
    264 int	 cgetnext(char **, const char * const *);
    265 int	 cgetnum(char *, const char *, long *);
    266 int	 cgetset(const char *);
    267 int	 cgetstr(char *, const char *, char **);
    268 int	 cgetustr(char *, const char *, char **);
    269 void	 csetexpandtc(int);
    270 
    271 int	 daemon(int, int);
    272 int	 devname_r(dev_t, mode_t, char *, size_t);
    273 #ifndef __LIBC12_SOURCE__
    274 __aconst char *devname(dev_t, mode_t) __RENAME(__devname50);
    275 #endif
    276 
    277 #define	HN_DECIMAL		0x01
    278 #define	HN_NOSPACE		0x02
    279 #define	HN_B			0x04
    280 #define	HN_DIVISOR_1000		0x08
    281 
    282 #define	HN_GETSCALE		0x10
    283 #define	HN_AUTOSCALE		0x20
    284 
    285 int	 humanize_number(char *, size_t, int64_t, const char *, int, int);
    286 int	 dehumanize_number(const char *, int64_t *);
    287 
    288 devmajor_t getdevmajor(const char *, mode_t);
    289 int	 getloadavg(double [], int);
    290 
    291 int	 getenv_r(const char *, char *, size_t);
    292 
    293 void	 cfree(void *);
    294 
    295 int	 heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
    296 int	 mergesort(void *, size_t, size_t,
    297 	    int (*)(const void *, const void *));
    298 int	 radixsort(const unsigned char **, int, const unsigned char *,
    299 	    unsigned);
    300 int	 sradixsort(const unsigned char **, int, const unsigned char *,
    301 	    unsigned);
    302 
    303 void	 mi_vector_hash(const void * __restrict, size_t, uint32_t,
    304 	    uint32_t[3]);
    305 
    306 void	 setproctitle(const char *, ...)
    307 	    __printflike(1, 2);
    308 const char *getprogname(void) __constfunc;
    309 void	setprogname(const char *);
    310 
    311 quad_t	 qabs(quad_t);
    312 quad_t	 strtoq(const char * __restrict, char ** __restrict, int);
    313 u_quad_t strtouq(const char * __restrict, char ** __restrict, int);
    314 
    315 	/* LONGLONG */
    316 long long strsuftoll(const char *, const char *, long long, long long);
    317 	/* LONGLONG */
    318 long long strsuftollx(const char *, const char *, long long, long long,
    319 	    		char *, size_t);
    320 
    321 int	 l64a_r(long, char *, int);
    322 
    323 size_t	shquote(const char *, char *, size_t);
    324 size_t	shquotev(int, char * const *, char *, size_t);
    325 #endif /* _NETBSD_SOURCE */
    326 #endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
    327 
    328 #if defined(_NETBSD_SOURCE)
    329 qdiv_t	 qdiv(quad_t, quad_t);
    330 #endif
    331 __END_DECLS
    332 
    333 #endif /* !_STDLIB_H_ */
    334