stdlib.h

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#ifndef __STDLIB_H__
#define __STDLIB_H__

#ifdef __cplusplus
extern "C" {
#endif

#include <stddef.h>
#include <stdint.h>

#ifdef __STDC_WANT_LIB_EXT1__
#include "errno.h"

typedef void (*constraint_handler_t) (const char *restrict msg, void *restrict ptr, errno_t error);

constraint_handler_t set_constraint_handler_s(constraint_handler_t handler);

void invoke_constraint_handler_s(const char *msg,
                                 const char *file,
                                 const char *function,
                                 uint32_t line,
                                 errno_t error);

void abort_handler_s(const char *restrict msg,
                     void *restrict ptr,
                     errno_t error) __attribute__ ((noreturn));

void ignore_handler_s(const char *restrict msg,
                      void *restrict ptr,
                      errno_t error);

#endif /* __STDC_WANT_LIB_EXT1__ */

extern void exit(int status) __attribute__ ((noreturn));

extern void _exit(int status) __attribute__((noreturn));

static __inline__ int abs(int j) {
    return (j < 0) ? -j : j;
}

void abort(void) __attribute__((noreturn));

extern long strtol(const char *nptr, char **endptr, int base)
    __attribute__ ((warn_unused_result));

extern unsigned long strtoul(const char *cp, char **endp, int base)
    __attribute__ ((warn_unused_result));


extern double strtod(const char *nptr, char **endptr);

extern long long strtoll(const char *nptr, char **endptr, int base)
    __attribute__ ((warn_unused_result));

extern unsigned long long strtoull(const char *cp, char **endp, int base)
    __attribute__ ((warn_unused_result));

extern float strtof(const char *nptr, char **endptr);

extern long double strtold(const char *nptr, char **endptr);

int atexit(void (*func)(void));

#ifndef __HIDE_INTERNAL_FUNCTIONS__

int on_exit(void (*func)(int , void *), void *arg);

#endif

extern void *malloc(size_t size)
    __attribute__ ((warn_unused_result, malloc));

extern void free(void *ptr);

extern void *calloc(size_t nmemb, size_t size)
    __attribute__ ((warn_unused_result, malloc));

extern void *realloc(void *ptr, size_t size)
    __attribute__ ((warn_unused_result));

/* stubs for jemalloc. Find more info at jemalloc_stubs.c */
#ifdef USE_JEMALLOC
extern char *__getenv_stub(const char *name);
#endif

void qsort(void *base, size_t nmemb, size_t size, int (*compar)(const void *, const void *));

void qsort_r(void *base, size_t nmemb, size_t size,
             int (*compar)(const void *, const void *, void *), void *arg);

int atoi(const char *nptr);

double atof(const char *nptr);

char *getenv(const char *name);

int unsetenv(const char *name);

int setenv(const char *name, const char *value, int overwrite);

#ifdef __cplusplus
}
#endif

#endif /* __STDLIB_H__ */