stdlib.h revision 50ace4fec5e8cb5afcbc656a4556fa528adfd760 
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));
53extern int on_exit(void (*)(int, void *), void *);
54
55extern char *getenv(const char *);
56extern int putenv(const char *);
57extern int setenv(const char *, const char *, int);
58extern int unsetenv(const char *);
59extern int clearenv(void);
60
61extern char *mktemp (char *);
62extern int mkstemp (char *);
63
64extern long strtol(const char *, char **, int);
65extern long long strtoll(const char *, char **, int);
66extern unsigned long strtoul(const char *, char **, int);
67extern unsigned long long strtoull(const char *, char **, int);
68extern double strtod(const char *nptr, char **endptr);
69
70static __inline__ float strtof(const char *nptr, char **endptr)
71{
72    return (float)strtod(nptr, endptr);
73}
74
75extern int atoi(const char *);
76extern long atol(const char *);
77extern long long atoll(const char *);
78
79static __inline__ double atof(const char *nptr)
80{
81    return (strtod(nptr, NULL));
82}
83
84static __inline__ int abs(int __n) {
85    return (__n < 0) ? -__n : __n;
86}
87
88static __inline__ long labs(long __n) {
89    return (__n < 0L) ? -__n : __n;
90}
91
92static __inline__ long long llabs(long long __n) {
93    return (__n < 0LL) ? -__n : __n;
94}
95
96extern char * realpath(const char *path, char *resolved);
97extern int system(const char * string);
98
99extern void * bsearch(const void *key, const void *base0,
100	size_t nmemb, size_t size,
101	int (*compar)(const void *, const void *));
102
103extern void qsort(void *, size_t, size_t, int (*)(const void *, const void *));
104
105extern long jrand48(unsigned short *);
106extern long mrand48(void);
107extern long nrand48(unsigned short *);
108extern long lrand48(void);
109extern unsigned short *seed48(unsigned short*);
110extern double erand48(unsigned short xsubi[3]);
111extern double drand48(void);
112extern void srand48(long);
113extern unsigned int arc4random(void);
114extern void arc4random_stir(void);
115extern void arc4random_addrandom(unsigned char *, int);
116
117#define RAND_MAX 0x7fffffff
118static __inline__ int rand(void) {
119    return (int)lrand48();
120}
121static __inline__ void srand(unsigned int __s) {
122    srand48(__s);
123}
124static __inline__ long random(void)
125{
126    return lrand48();
127}
128static __inline__ void srandom(unsigned int __s)
129{
130    srand48(__s);
131}
132
133/* Basic PTY functions.  These only work if devpts is mounted! */
134
135extern int    unlockpt(int);
136extern char*  ptsname(int);
137extern int    ptsname_r(int, char*, size_t);
138extern int    getpt(void);
139
140static __inline__ int grantpt(int __fd __attribute((unused)))
141{
142  (void)__fd;
143  return 0;     /* devpts does this all for us! */
144}
145
146typedef struct {
147    int  quot;
148    int  rem;
149} div_t;
150
151extern div_t   div(int, int);
152
153typedef struct {
154    long int  quot;
155    long int  rem;
156} ldiv_t;
157
158extern ldiv_t   ldiv(long, long);
159
160typedef struct {
161    long long int  quot;
162    long long int  rem;
163} lldiv_t;
164
165extern lldiv_t   lldiv(long long, long long);
166
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#define MB_CUR_MAX 1
176
177__END_DECLS
178
179#endif /* _STDLIB_H_ */
180