stdlib.h revision a27d2baa0c1a2ec70f47ea9199b1dd6762c8a349 
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#include <stddef.h>
33#include <string.h>
34#include <alloca.h>
35#include <strings.h>
36#include <memory.h>
37
38__BEGIN_DECLS
39
40#define EXIT_FAILURE 1
41#define EXIT_SUCCESS 0
42
43extern __noreturn void exit(int);
44extern __noreturn void abort(void);
45extern int atexit(void (*)(void));
46extern int on_exit(void (*)(int, void *), void *);
47
48extern char *getenv(const char *);
49extern int putenv(const char *);
50extern int setenv(const char *, const char *, int);
51extern int unsetenv(const char *);
52extern int clearenv(void);
53
54extern char *mktemp (char *);
55extern int mkstemp (char *);
56
57extern long strtol(const char *, char **, int);
58extern long long strtoll(const char *, char **, int);
59extern unsigned long strtoul(const char *, char **, int);
60extern unsigned long long strtoull(const char *, char **, int);
61extern double strtod(const char *nptr, char **endptr);
62
63static __inline__ float strtof(const char *nptr, char **endptr)
64{
65    return (float)strtod(nptr, endptr);
66}
67
68extern int atoi(const char *);
69extern long atol(const char *);
70extern long long atoll(const char *);
71
72static __inline__ double atof(const char *nptr)
73{
74    return (strtod(nptr, NULL));
75}
76
77static __inline__ int abs(int __n) {
78    return (__n < 0) ? -__n : __n;
79}
80
81static __inline__ long labs(long __n) {
82    return (__n < 0L) ? -__n : __n;
83}
84
85static __inline__ long long llabs(long long __n) {
86    return (__n < 0LL) ? -__n : __n;
87}
88
89extern char * realpath(const char *path, char *resolved);
90extern int system(const char * string);
91
92extern void * bsearch(const void *key, const void *base0,
93	size_t nmemb, size_t size,
94	int (*compar)(const void *, const void *));
95
96extern void qsort(void *, size_t, size_t, int (*)(const void *, const void *));
97
98extern long jrand48(unsigned short *);
99extern long mrand48(void);
100extern long nrand48(unsigned short *);
101extern long lrand48(void);
102extern unsigned short *seed48(unsigned short*);
103extern void srand48(long);
104extern unsigned int arc4random(void);
105extern void arc4random_stir(void);
106extern void arc4random_addrandom(unsigned char *, int);
107
108#define RAND_MAX 0x7fffffff
109static __inline__ int rand(void) {
110    return (int)lrand48();
111}
112static __inline__ void srand(unsigned int __s) {
113    srand48(__s);
114}
115static __inline__ long random(void)
116{
117    return lrand48();
118}
119static __inline__ void srandom(unsigned int __s)
120{
121    srand48(__s);
122}
123
124/* Basic PTY functions.  These only work if devpts is mounted! */
125
126extern int    unlockpt(int);
127extern char*  ptsname(int);
128extern char*  ptsname_r(int, char*, size_t);
129extern int    getpt(void);
130
131static __inline__ int grantpt(int __fd)
132{
133  (void)__fd;
134  return 0;     /* devpts does this all for us! */
135}
136
137__END_DECLS
138
139#endif /* _STDLIB_H_ */
140