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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 
     59 extern char *mkdtemp(char *);
     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) __NDK_FPABI__;
     68 
     69 __NDK_FPABI__
     70 static __inline__ float strtof(const char *nptr, char **endptr)
     71 {
     72     return (float)strtod(nptr, endptr);
     73 }
     74 
     75 extern int atoi(const char *);
     76 extern long atol(const char *);
     77 extern long long atoll(const char *);
     78 
     79  __NDK_FPABI__
     80 static __inline__ double atof(const char *nptr)
     81 {
     82     return (strtod(nptr, NULL));
     83 }
     84 
     85 static __inline__ int abs(int __n) {
     86     return (__n < 0) ? -__n : __n;
     87 }
     88 
     89 static __inline__ long labs(long __n) {
     90     return (__n < 0L) ? -__n : __n;
     91 }
     92 
     93 static __inline__ long long llabs(long long __n) {
     94     return (__n < 0LL) ? -__n : __n;
     95 }
     96 
     97 extern char * realpath(const char *path, char *resolved);
     98 extern int system(const char * string);
     99 
    100 extern void * bsearch(const void *key, const void *base0,
    101 	size_t nmemb, size_t size,
    102 	int (*compar)(const void *, const void *));
    103 
    104 extern void qsort(void *, size_t, size_t, int (*)(const void *, const void *));
    105 
    106 extern long jrand48(unsigned short *);
    107 extern long mrand48(void);
    108 extern long nrand48(unsigned short *);
    109 extern long lrand48(void);
    110 extern unsigned short *seed48(unsigned short*);
    111 extern double erand48(unsigned short xsubi[3]) __NDK_FPABI__;
    112 extern double drand48(void) __NDK_FPABI__;
    113 extern void srand48(long);
    114 extern unsigned int arc4random(void);
    115 extern void arc4random_stir(void);
    116 extern void arc4random_addrandom(unsigned char *, int);
    117 
    118 #define RAND_MAX 0x7fffffff
    119 static __inline__ int rand(void) {
    120     return (int)lrand48();
    121 }
    122 static __inline__ void srand(unsigned int __s) {
    123     srand48(__s);
    124 }
    125 static __inline__ long random(void)
    126 {
    127     return lrand48();
    128 }
    129 static __inline__ void srandom(unsigned int __s)
    130 {
    131     srand48(__s);
    132 }
    133 
    134 /* Basic PTY functions.  These only work if devpts is mounted! */
    135 
    136 extern int    unlockpt(int);
    137 extern char*  ptsname(int);
    138 extern char*  ptsname_r(int, char*, size_t);
    139 extern int    getpt(void);
    140 
    141 static __inline__ int grantpt(int __fd)
    142 {
    143   (void)__fd;
    144   return 0;     /* devpts does this all for us! */
    145 }
    146 
    147 typedef struct {
    148     int  quot;
    149     int  rem;
    150 } div_t;
    151 
    152 extern div_t   div(int, int);
    153 
    154 typedef struct {
    155     long int  quot;
    156     long int  rem;
    157 } ldiv_t;
    158 
    159 extern ldiv_t   ldiv(long, long);
    160 
    161 typedef struct {
    162     long long int  quot;
    163     long long int  rem;
    164 } lldiv_t;
    165 
    166 extern lldiv_t   lldiv(long long, long long);
    167 
    168 #if 1 /* MISSING FROM BIONIC - ENABLED FOR STLPort and libstdc++-v3 */
    169 /* make STLPort happy */
    170 extern int      mblen(const char *, size_t);
    171 extern size_t   mbstowcs(wchar_t *, const char *, size_t);
    172 extern int      mbtowc(wchar_t *, const char *, size_t);
    173 
    174 /* Likewise, make libstdc++-v3 happy.  */
    175 extern int	wctomb(char *, wchar_t);
    176 extern size_t	wcstombs(char *, const wchar_t *, size_t);
    177 #endif /* MISSING */
    178 
    179 #define MB_CUR_MAX 1
    180 
    181 #if 0 /* MISSING FROM BIONIC */
    182 extern int on_exit(void (*)(int, void *), void *);
    183 extern int clearenv(void);
    184 #endif /* MISSING */
    185 
    186 __END_DECLS
    187 
    188 #endif /* _STDLIB_H_ */
    189