source: bootcd/isolinux/syslinux-6.03/com32/include/stdlib.h

/*
 * stdlib.h
 */

#ifndef _STDLIB_H
#define _STDLIB_H

#include <klibc/extern.h>
#include <klibc/compiler.h>
#include <stddef.h>

#define EXIT_FAILURE 1
#define EXIT_SUCCESS 0

__extern __noreturn abort(void);
static __inline__ int abs(int __n)
{
    return (__n < 0) ? -__n : __n;
}

__extern int atexit(void (*)(void));
__extern int on_exit(void (*)(int, void *), void *);
__extern int atoi(const char *);
__extern long atol(const char *);
__extern long long atoll(const char *);
__extern __noreturn exit(int);
__extern __noreturn _Exit(int);
__extern void free(void *);
static __inline__ long labs(long __n)
{
    return (__n < 0L) ? -__n : __n;
}

static __inline__ long long llabs(long long __n)
{
    return (__n < 0LL) ? -__n : __n;
}

__extern __mallocfunc void *malloc(size_t);
__extern __mallocfunc void *zalloc(size_t);
__extern __mallocfunc void *calloc(size_t, size_t);
__extern __mallocfunc void *realloc(void *, size_t);
__extern long strtol(const char *, char **, int);
__extern long long strtoll(const char *, char **, int);
__extern unsigned long strtoul(const char *, char **, int);
__extern unsigned long long strtoull(const char *, char **, int);

static __inline__ char *getenv(const char *name)
{
    (void)name;
    return NULL;
}

__extern int putenv(const char *);
__extern int setenv(const char *, const char *, int);
__extern int unsetenv(const char *);

__extern void qsort(void *, size_t, size_t,
                    int (*)(const void *, const void *));

__extern long jrand48(unsigned short *);
__extern long mrand48(void);
__extern long nrand48(unsigned short *);
__extern long lrand48(void);
__extern unsigned short *seed48(const unsigned short *);
__extern void srand48(long);

#define RAND_MAX 0x7fffffff
static __inline__ int rand(void)
{
    return (int)lrand48();
}

static __inline__ void srand(unsigned int __s)
{
    srand48(__s);
}

static __inline__ long random(void)
{
    return lrand48();
}

static __inline__ void srandom(unsigned int __s)
{
    srand48(__s);
}

/* Basic PTY functions.  These only work if devpts is mounted! */

__extern int unlockpt(int);
__extern char *ptsname(int);
__extern int getpt(void);

static __inline__ int grantpt(int __fd)
{
    (void)__fd;
    return 0;                   /* devpts does this all for us! */
}

#endif /* _STDLIB_H */