stdlib.h revision 7c2ba504e9c10e67f27e7b0aff90981c469d2701
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
50extern __noreturn void exit(int);
51extern __noreturn void abort(void);
52extern int atexit(void (*)(void));
53
54extern char *getenv(const char *);
55extern int putenv(const char *);
56extern int setenv(const char *, const char *, int);
57extern int unsetenv(const char *);
58extern int clearenv(void);
59
60extern char *mktemp (char *);
61extern int mkstemp (char *);
62
63extern long strtol(const char *, char **, int);
64extern long long strtoll(const char *, char **, int);
65extern unsigned long strtoul(const char *, char **, int);
66extern unsigned long long strtoull(const char *, char **, int);
67extern double strtod(const char *nptr, char **endptr);
68
69static __inline__ float strtof(const char *nptr, char **endptr)
70{
71    return (float)strtod(nptr, endptr);
72}
73
74extern int atoi(const char *);
75extern long atol(const char *);
76extern long long atoll(const char *);
77
78static __inline__ double atof(const char *nptr)
79{
80    return (strtod(nptr, NULL));
81}
82
83static __inline__ int abs(int __n) {
84    return (__n < 0) ? -__n : __n;
85}
86
87static __inline__ long labs(long __n) {
88    return (__n < 0L) ? -__n : __n;
89}
90
91static __inline__ long long llabs(long long __n) {
92    return (__n < 0LL) ? -__n : __n;
93}
94
95extern char * realpath(const char *path, char *resolved);
96extern int system(const char * string);
97
98extern void * bsearch(const void *key, const void *base0,
99	size_t nmemb, size_t size,
100	int (*compar)(const void *, const void *));
101
102extern void qsort(void *, size_t, size_t, int (*)(const void *, const void *));
103
104extern long jrand48(unsigned short *);
105extern long mrand48(void);
106extern long nrand48(unsigned short *);
107extern long lrand48(void);
108extern unsigned short *seed48(unsigned short*);
109extern double erand48(unsigned short xsubi[3]);
110extern double drand48(void);
111extern void srand48(long);
112extern unsigned int arc4random(void);
113extern void arc4random_stir(void);
114extern void arc4random_addrandom(unsigned char *, int);
115
116#define RAND_MAX 0x7fffffff
117static __inline__ int rand(void) {
118    return (int)lrand48();
119}
120static __inline__ void srand(unsigned int __s) {
121    srand48(__s);
122}
123static __inline__ long random(void)
124{
125    return lrand48();
126}
127static __inline__ void srandom(unsigned int __s)
128{
129    srand48(__s);
130}
131
132/* Basic PTY functions.  These only work if devpts is mounted! */
133
134extern int    unlockpt(int);
135extern char*  ptsname(int);
136extern char*  ptsname_r(int, char*, size_t);
137extern int    getpt(void);
138
139static __inline__ int grantpt(int __fd)
140{
141  (void)__fd;
142  return 0;     /* devpts does this all for us! */
143}
144
145typedef struct {
146    int  quot;
147    int  rem;
148} div_t;
149
150extern div_t   div(int, int);
151
152typedef struct {
153    long int  quot;
154    long int  rem;
155} ldiv_t;
156
157extern ldiv_t   ldiv(long, long);
158
159typedef struct {
160    long long int  quot;
161    long long int  rem;
162} lldiv_t;
163
164extern lldiv_t   lldiv(long long, long long);
165
166#if 1 /* MISSING FROM BIONIC - ENABLED FOR STLPort and libstdc++-v3 */
167/* make STLPort happy */
168extern int      mblen(const char *, size_t);
169extern size_t   mbstowcs(wchar_t *, const char *, size_t);
170extern int      mbtowc(wchar_t *, const char *, size_t);
171
172/* Likewise, make libstdc++-v3 happy.  */
173extern int	wctomb(char *, wchar_t);
174extern 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 */
180extern int on_exit(void (*)(int, void *), void *);
181#endif /* MISSING */
182
183__END_DECLS
184
185#endif /* _STDLIB_H_ */
186