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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in
     12  *    the documentation and/or other materials provided with the
     13  *    distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
     22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 #ifndef _STDLIB_H_
     29 #define _STDLIB_H_
     30 
     31 #include <sys/cdefs.h>
     32 
     33 /* wchar_t is required in stdlib.h according to POSIX.
     34  * note that defining __need_wchar_t prevents stddef.h
     35  * to define all other symbols it does normally */
     36 #define __need_wchar_t
     37 #include <stddef.h>
     38 
     39 #include <stddef.h>
     40 #include <string.h>
     41 #include <alloca.h>
     42 #include <strings.h>
     43 #include <memory.h>
     44 
     45 __BEGIN_DECLS
     46 
     47 #define EXIT_FAILURE 1
     48 #define EXIT_SUCCESS 0
     49 
     50 extern __noreturn void exit(int);
     51 extern __noreturn void abort(void);
     52 extern int atexit(void (*)(void));
     53 
     54 extern char *getenv(const char *);
     55 extern int putenv(const char *);
     56 extern int setenv(const char *, const char *, int);
     57 extern int unsetenv(const char *);
     58 extern int clearenv(void);
     59 
     60 extern char *mktemp (char *);
     61 extern int mkstemp (char *);
     62 
     63 extern long strtol(const char *, char **, int);
     64 extern long long strtoll(const char *, char **, int);
     65 extern unsigned long strtoul(const char *, char **, int);
     66 extern unsigned long long strtoull(const char *, char **, int);
     67 extern double strtod(const char *nptr, char **endptr);
     68 
     69 static __inline__ float strtof(const char *nptr, char **endptr)
     70 {
     71     return (float)strtod(nptr, endptr);
     72 }
     73 
     74 extern int atoi(const char *);
     75 extern long atol(const char *);
     76 extern long long atoll(const char *);
     77 
     78 static __inline__ double atof(const char *nptr)
     79 {
     80     return (strtod(nptr, NULL));
     81 }
     82 
     83 static __inline__ int abs(int __n) {
     84     return (__n < 0) ? -__n : __n;
     85 }
     86 
     87 static __inline__ long labs(long __n) {
     88     return (__n < 0L) ? -__n : __n;
     89 }
     90 
     91 static __inline__ long long llabs(long long __n) {
     92     return (__n < 0LL) ? -__n : __n;
     93 }
     94 
     95 extern char * realpath(const char *path, char *resolved);
     96 extern int system(const char * string);
     97 
     98 extern void * bsearch(const void *key, const void *base0,
     99 	size_t nmemb, size_t size,
    100 	int (*compar)(const void *, const void *));
    101 
    102 extern void qsort(void *, size_t, size_t, int (*)(const void *, const void *));
    103 
    104 extern long jrand48(unsigned short *);
    105 extern long mrand48(void);
    106 extern long nrand48(unsigned short *);
    107 extern long lrand48(void);
    108 extern unsigned short *seed48(unsigned short*);
    109 extern double erand48(unsigned short xsubi[3]);
    110 extern double drand48(void);
    111 extern void srand48(long);
    112 extern unsigned int arc4random(void);
    113 extern void arc4random_stir(void);
    114 extern void arc4random_addrandom(unsigned char *, int);
    115 
    116 #define RAND_MAX 0x7fffffff
    117 static __inline__ int rand(void) {
    118     return (int)lrand48();
    119 }
    120 static __inline__ void srand(unsigned int __s) {
    121     srand48(__s);
    122 }
    123 static __inline__ long random(void)
    124 {
    125     return lrand48();
    126 }
    127 static __inline__ void srandom(unsigned int __s)
    128 {
    129     srand48(__s);
    130 }
    131 
    132 /* Basic PTY functions.  These only work if devpts is mounted! */
    133 
    134 extern int    unlockpt(int);
    135 extern char*  ptsname(int);
    136 extern int    ptsname_r(int, char*, size_t);
    137 extern int    getpt(void);
    138 
    139 static __inline__ int grantpt(int __fd __attribute((unused)))
    140 {
    141   (void)__fd;
    142   return 0;     /* devpts does this all for us! */
    143 }
    144 
    145 typedef struct {
    146     int  quot;
    147     int  rem;
    148 } div_t;
    149 
    150 extern div_t   div(int, int);
    151 
    152 typedef struct {
    153     long int  quot;
    154     long int  rem;
    155 } ldiv_t;
    156 
    157 extern ldiv_t   ldiv(long, long);
    158 
    159 typedef struct {
    160     long long int  quot;
    161     long long int  rem;
    162 } lldiv_t;
    163 
    164 extern lldiv_t   lldiv(long long, long long);
    165 
    166 #if 1 /* MISSING FROM BIONIC - ENABLED FOR STLPort and libstdc++-v3 */
    167 /* make STLPort happy */
    168 extern int      mblen(const char *, size_t);
    169 extern size_t   mbstowcs(wchar_t *, const char *, size_t);
    170 extern int      mbtowc(wchar_t *, const char *, size_t);
    171 
    172 /* Likewise, make libstdc++-v3 happy.  */
    173 extern int	wctomb(char *, wchar_t);
    174 extern size_t	wcstombs(char *, const wchar_t *, size_t);
    175 #endif /* MISSING */
    176 
    177 #define MB_CUR_MAX 1
    178 
    179 #if 0 /* MISSING FROM BIONIC */
    180 extern int on_exit(void (*)(int, void *), void *);
    181 #endif /* MISSING */
    182 
    183 __END_DECLS
    184 
    185 #endif /* _STDLIB_H_ */
    186